Warning device system, computer program product, means of transport and method for securing a means of transport

Abstract

Method for assisting a user (1) of a means of transport (10) in operating a warning device system (2) with a warning device unit (3) which is removable from the means of transport (10) and is configured to indicate a first position (P10) of the means of transport (10) which is at a standstill, comprising the steps: - automatically defining (600), on the basis of the first position (P10), a second position (P2) as a target position for a warning device unit (3), - Display (700) of the second position (P2), - locating (104) a mobile wireless communication terminal (4), preferably a mobile phone, of the user (1) to determine a current fourth position (P4) of the mobile wireless communication terminal (4), and - outputting (800) an indication and / or continued or repeated display of the second position (P2) as long as the second position (P2) deviates from the fourth position (P4).

Description

The present invention relates to a warning device system, a computer program product, a means of transportation and a method for safeguarding a means of transportation. In particular, the present invention relates to a possibility for assisting a user of a means of transportation, preferably a driver of a motor vehicle, in the operation of a warning device system with a warning device unit, preferably with a warning triangle.It is known that as soon as a motor vehicle has come to a standstill at an unsuitable location, for example due to a rumen, an accident or an emergency stop, a warning triangle for indicating the motor vehicle in the direction of the approaching traffic is to be set up for securing the location. In order to warn other road users in a road traffic network, for example on the freeway, in good time, the driver positions the road user at a sufficient safety distance, in particular according to the speeds of the moving traffic and, in the case of difficult-to-see road profiles, before bends in the curve. In the current state of the art, signal-emitting warning triangles are already known, which have a component coupled to a global navigation satellite system, for example GPS, and which, when set up, send the current stop position and further data to a central traffic control point. This then immediately forwards corresponding traffic messages to the drivers.DE 10 2009 021 149 A1 discloses a warning triangle which emits signals and which activates itself when the warning triangle is hinged open and in the process has an electronic structural unit encapsulated in an environmentally tight manner, with the result that a signal function is automatically activated when the warning triangle is hinged open.DE 10 2015 220 613 A1 relates to a method for determining a parking location for a warning triangle in the road traffic area. The method comprises a step of reading in an emergency stop information item about an executed emergency stop of a vehicle, a step of reading in an environment information item about a characteristic of an environment of the vehicle in the region of the emergency stop, and a step of determining a position of the installation location using the emergency stop information item and the environment information item.KR 10 2012 057 060 A relates to a safety tripod including: a motor drive unit for moving a main body; a communication unit for wirelessly communicating with a remote control unit; a reception sensitivity measurement unit for periodically measuring the reception sensitivity of a signal received from the remote control unit; and a control unit for comparing the reception sensitivity measured by the reception sensitivity measurement unit with a preset setting value. There is provided a wireless control safety tripod comprising a main control unit for controlling the motor drive unit to be driven until the motor drive unit is the same as each other.DE 10 2010 046 522 A1 relates to a warning system for a motor vehicle having a warning triangle which has a frame to which a film is fastened, a stand, lighting means and an energy store, wherein the warning triangle has a transmitter which interacts with a receiver for position determination.DE 10 2015 117 924 A1 relates, in a warning triangle apparatus having a portable warning triangle with a surface designed graphically according to the specifications of the legal standards, to a distance measurement for placing a warning triangle that can be carried out reliably even in darkness and adverse weather conditions, wherein a distance measuring device is provided for measuring a distance between a parked vehicle and the warning triangle, and a display device for displaying a distance between a parked vehicle and the warning triangle is arranged in the region of the rear surface of the warning triangle.Proceeding from the aforementioned prior art, it is necessary to further significantly reduce the probability of triggered subsequent accidents by approaching flowing traffic. The method according to the invention is based on the problem that, for example, in road traffic, a frequent cause of subsequent accidents can be seen in an only inadequate safeguarding of a motor vehicle which has remained on the deck, namely if the safeguarding person sets up the warning triangle at too close a distance from the vehicle which has been protected. It is therefore an object of the present invention to assist the driver of a means of transport that has come to a standstill, in particular the driver of a roadside vehicle standing on a side strip of a freeway or on the edge of a road on a country road, for example, in the process of securing the location in an optimum manner.This object is achieved by the features of the independent claims. The dependent claims include advantageous further developments of the invention.The above object is achieved according to the invention by a method and an associated intelligent warning device system. A user, generally the driver of the means of transportation itself or a further passenger or a third party to be assisted, is informed and guided according to the invention where there is specifically a suitable and preferably ideal target position for setting up a separate warning device unit such as a warning triangle in order to inform the remaining traffic in a safe and timely manner on the stationary means of transportation, for example a roadside vehicle on the so-called shoulder. In other words, according to the invention, the user is assisted in safeguarding the warning device unit to be placed exactly at such a position that the approaching road user can still perceive the outgoing warning in good time that he is permitted to brake, stop completely and / or avoid as controlled as possible within his reaction time. This can also serve especially to avoid mass carrageen with a plurality of vehicles traveling close to one another, whereby the invention can contribute substantially to reducing the risk of subsequent accidents with severe damage to persons.Since the degree of the required reaction in the driving behavior of the following traffic depends on a variety of influencing variables, in particular on the road type with the associated directional speeds and the safety distances offered, the information in this respect can be used in particular in the determination of the minimum distance to the motor vehicle to be secured which ideally is to be observed. The information about the present road type can be provided in different ways. Thus, on the basis of a position determined by location, a road type can be automatically assigned by using previously stored assignments of a respective road type to the respective position, for example speed-assisted zones and other information on road maps. Alternatively or additionally, detection means, for example cameras and / or distance sensors, which are already provided on the motor vehicle for other driver assistance systems can be used for automatic detection of the road type and as input information into the warning device system.In preferred refinements of the invention, in addition and / or as an alternative to the inclusion of the road type, a movement parameter is included as an influencing variable in the definition of the second position. Thus, deviations of the actual traffic flow and / or of the individual driving behavior from theoretically based and / or idealised assumptions for these influencing variables can also be taken into account. The real traffic conditions can thus be taken into account better. For example, in the case of a vehicle designed as a passenger car, it may be preferred that the warning device system adjusts its automatically made recommendation to the real traffic situation when a traffic jam occurs. If the driver of the car has not driven at a normally adapted speed in the moving traffic before the operational malfunction occurs, but rather is already slower in the congested traffic for a longer time in this example, the information about this is stored in a series-provided onboard computer of the car in such a way that it can be called up, namely in the form of movement characteristics which are most recently relevant, such as driving speeds, vertical accelerations and transverse accelerations. Using the movement characteristics mentioned, the warning device system can automatically recognize that a significantly smaller distance of the second position from the first position should be recommended in a meaningful manner due to the traffic flowing only very slowly. The evaluation unit can then recommend a significantly more close second position, upstream on the basis of a down-corrected minimum distance. It should be noted at this point that the warning device system can also direct two separate warning device units, namely for placement at two second positions at different distances. In this case, in particular, a primary second position would be automatically defined on the basis of a minimum distance recommended for traffic flowing normally, and a secondary second position would be automatically defined on the basis of a minimum distance corrected according to the actual flow speed of the road users.Particular advantages of the invention result not least from the fact that in the real use case the user is frequently impaired with regard to his accustomed concentration capacity, due to the acute situation. Thus, the user may be excited or cared for or, if he has suffered an accident, even had suffered a shock. Furthermore, the user, who is unexpectedly located in the middle of the route, will mostly not know the exact spatial conditions of the traffic network, for example a curved road course. In this case, the warning device system according to the invention can offer the user a targeted rejection and considerable orientation aid.Not only the vehicles on land (passenger car, transporter, truck, motorcycle) but also aircraft and / or watercraft are suitable as means of transport; for example, the invention can also be used particularly advantageously for the in-house ship travel on waterways and / or canals.According to a second aspect of the present invention, a warning device unit, preferably a "smart" warning triangle, which can be used in a warning device system for protecting a means of transport is proposed, which warning device unit can be removed from the means of transport. The warning device unit is configured to indicate a first position of the means of transport being at a standstill. For this purpose, the warning device unit according to the invention initially comprises a terrestrial and / or satellite-based locating device, in particular based on radio-based navigation systems, which is configured to determine a current third position of the warning device unit. Furthermore, for the function of the warning device unit, an evaluation unit arranged internally and / or separately, externally on it is to be provided. The latter is configured to automatically define a second position as a suitable, preferably ideal target position for a warning device unit to be positioned on the basis of the first position. Alternatively or additionally to an internally arranged evaluation unit which can be used with the warning device unit, an externally arranged evaluation unit which is already present in any case in an electronic device can also be used. This relates in particular to an evaluation unit arranged in a mobile wireless communication terminal, preferably in a mobile telephone, of a user. In order to address such an externally arranged evaluation unit and to communicate with it, an interface must be included in such an embodiment of the warning device unit according to the invention, which interface preferably enables wireless communication, for example by means of Bluetooth. Furthermore, the warning device unit according to the invention comprises an internal output unit and / or a preferably wireless interface to the mobile wireless communication terminal with an external output unit, by which for example a visualizing and / or touch-sensitive screen and / or an acoustic signal output, in particular a voice command, of a mobile telephone or a so-called "tablet" of the user can be meant. Accordingly, the output unit and / or the mobile wireless communication terminal is configured by means of the output unit to inform the user of the second position.A third aspect of the present invention relates to an entire warning device system which is configured to execute a method according to the invention for protecting a means of transport according to the first aspect of the present invention. For this purpose, the warning device system comprises an evaluation unit and / or a preferably wireless interface to an evaluation unit arranged externally, preferably in the means of transport, and an output unit, which in turn is connected to the evaluation unit via an interface. In a preferred development of the warning device system according to the invention, a terrestrial and / or satellite-supported locating device, in particular based on radio-based navigation systems, is further included by the latter. In this case, the locating device can preferably be designed as a receiver, arranged in particular on the warning device unit, for a global navigation satellite system (GNSS or multi-GNSS), preferably on the basis of GPS, GLONASS, Galileo, BeiDou, AGPS, RTK and / or VRS.It should be noted at this point that a core idea of the present invention lies in the recommendation made automatically by the user of the target position, the second position, for the placement of the warning device unit for the purpose of safeguarding a usually breakdown or accident site, the first position. In this respect, it is less significant for the entire warning device system according to the invention, which includes possibly other technical systems, which are already usually installed in series in modern means of transportation, the evaluation units required according to the invention, such as processors, and / or output units, such as screens or loudspeakers, in the first respect. On the contrary, it is even to be expected that, in order to reduce the manufacturing costs, rather synergistically implemented embodiments may be preferred which, via interfaces, address and use devices and computers already present elsewhere.Further exemplary embodiments are based on the inclusion of context information of the traffic environment, preferably on the basis of already collected for other technical purposes, such as for example for controlling engine operation and / or supporting driving behavior. In addition, the use of context information from existing detection systems such as front and rear cameras relates to preferred embodiments. On the other hand, the invention preferably provides not only a one-time, initial recommendation of the target position, which is pronounced to the user, but also a further instruction and / or monitoring of the actions carried out for safeguarding.The same applies to the fourth aspect of the present invention in the form of an associated computer program product. This is designed, for example, as a program code, a so-called "app", which can be installed on a mobile wireless communication terminal of the user for controlling an evaluation unit and an output unit or for signal transmission and for signal reference via interfaces. This computer program product according to the invention comprises instructions which, if they are executed on an evaluation unit of a warning device unit according to the invention and / or of a warning device system according to the invention, cause the evaluation unit to execute the steps of a method according to the invention.As a fifth aspect of the present invention, a means of transportation is proposed, which comprises a computer program product according to the invention and / or a warning device unit according to the invention.With regard to the further aspects of the present invention, the features or combinations of features and the advantages resulting therefrom correspond to those described in connection with the first-mentioned aspect of the invention of the method in such a way that reference is made to the above explanations in order to avoid repetitions.Further details, features and advantages of the invention are evident from the following description and the figures. The following are shown: FIG. 1 shows a schematic illustration of a situation as a plan view, in which a first exemplary embodiment of a warning device system according to the invention is used with an exemplary embodiment of a warning device unit according to the invention; FIG. 2 is a schematic illustration as a view of the first exemplary embodiment of a warning device system according to the invention; FIG. 3 shows a schematic illustration as a view of a second exemplary embodiment of a warning device system according to the invention; FIG. 4 is a schematic illustration as a view of a third exemplary embodiment of a warning device system according to the invention; and FIG. 5 shows a flow chart illustrating steps of an exemplary embodiment of a method according to the invention.FIG. 1 shows, from the bird's eye view, a situation of a vehicle pann created around a car 10 as a means of transport, in which a first exemplary embodiment of a warning device system 2 according to the invention with a first exemplary embodiment of a warning triangle 3 is used as a warning device unit according to the invention. For this purpose, FIG. 2 illustrates, as a schematic detailed view, the basic principle of the warning device system 2 according to the invention, in which the latter is realized integrally in the warning triangle 3.As can be seen in FIG. 1, the car 10 has remained behind a sharp right-hand bend of a single-lane land road. In the event of a roadside entrance, the driver 1 as a user has still been able to steer the passenger car 10 out of the corner region onto the lateral emergency strip beyond the solid roadway boundary up to its complete standstill to a first position P 10. At the moment shown, the driver 1 has exited the car 10 with flashing warning light system and returns against the approaching traffic upstream on the edge of the road in order to secure the first position P 10 of the car 10 representing a hazard zone by raising the warning triangle 3 with a sufficient safety margin.For this purpose, the driver 1 follows concrete instructions here with regard to an ideally suitable target position, which is conveyed to him as a second position P 2 by the "intelligent" warning triangle 3 according to the invention itself. For this purpose, a screen 5 is installed in the warning triangle 3 as an output unit, on which screen the driver, similar to a navigation system, recognizes a current road map with the first position P 10 as starting point and with the second position P 2 as target position and ending point of its target travel route suggested by the warning triangle 3.Since the warning triangle 3 is satellite-supported via a locating device 6 designed as a GPS receiver and locates itself quasi in real time, its real location is continuously determined as a third position P 3 and is also carried dynamically as a moving point in the representation on the screen 5. As long as the warning triangle 3 establishes a deviation of its desired position P 2 with respect to its current position P 3, it indicates to the driver 1 by showing a direction vector to him on the screen 5 and furthermore guiding him by voice command about the direction to be turned. To further increase the resolution by means of terrestrial navigation, the locating device 6 can alternatively or additionally receive terrestrial signals, for example from radio control posts.In the first exemplary embodiment illustrated here, the first position P 10 coincides with a position P 3 initially determined for the warning triangle 3, namely when, at the beginning of the rumen, the driver 1 exits the car 10 for protection and initiates automatic activation of the warning device system 2 by removing the warning triangle 3 from the trunk of the car 10 or by pressing an activation button. On the basis of the first position P 10, a second position P 2 is now calculated by an evaluation unit 7, for example a microprocessor, provided in the warning triangle 3 according to the invention at a predefined minimum distance, for example 100 m, and this position is displayed to the driver 1 on the screen 5 together with the underlying minimum distance.Furthermore, the evaluation unit 7, for example a microprocessor, incorporated in the warning triangle 3 according to the invention, uses the third position P 3 to obtain context information about the road type 20 relevant to the warning device system 2. In this case, the road type 20 comprises here on the one hand the speed bid provided on the present land road, and on the other hand a previously stored knowledge about the road traffic network of the nearby environment around the city, in particular where exactly the beginning of the right-hand curve that is difficult to see and a hilltop lies in the course of the road. On the basis of this context information about the road type 20, the evaluation unit 7 flexibly optimizes the calculation of the second position P 2. For example, the recommendation for Germany or Austria consists in placing the rumen triangle on a freeway at approximately 150 to 400 m, in particular 250 m, on a country road at 150 m and in the city at 50 m in front of the location to be secured and at approximately 70 cm from the side of the road. In other words, the situation in the exemplary embodiment shown here can be represented in such a way that, owing to the fact that a rumen is on a land road behind a bend on a cap, the warning triangle 3 defines a second position P 2 at, for example, 194 m distance upstream of the passenger car 10 in the first position P 10. In contrast, if the situation shown in FIG. 1 were one existing on a freeway in the United Kingdom, the warning device system 2 would also automatically identify this type of road 20 and, according to the road traffic regulation applicable there, would inform the driver 1 that, in these countries, there is even urgent departure from the setting up of a warning triangle on the freeways ("motorways").Furthermore, it is shown here to the driver 1 on the screen 5 that the warning triangle 3 is to be set up at a recommended minimum distance, for example 70 cm, from the road edge. In the first exemplary embodiment shown here, the warning device system 2 also takes into account, by means of the context information relating to the road type 20, the precise position knowledge which is required for automatically defining the distance of the second position P 2 from the edge of the road, that is to say into the road, and outputs a corresponding indication, for example only 30 cm on the screen 5 on account of the imminent tight right-hand curve.Following the situation shown in FIG. 1, in the possible case (not shown graphically here) that the driver 1 would forget the warning triangle 3 located further away from the first position P 10 of the passenger car 10 after the end of the roadside situation and leave it to stand when starting again, the warning device system 2 can receive an alarm signal.FIG. 3 shows a schematic illustration as a view of a second exemplary embodiment of a warning device system 2 according to the invention, which illustrates a variant of the first exemplary embodiment shown in FIGS. 1 and 2, which variant is preferred with regard to production costs and robustness with respect to adverse weather conditions. In this case, the warning triangle 3 itself has a locating device 6, as before, so that its current third position P 3 can be determined in an insusceptible manner to application errors and accurately. In contrast to the first exemplary embodiment, no evaluation unit 7 and output unit 5 of its own is present in the warning triangle 3, but rather it uses the means, evaluation unit 7 and output unit 5, which are already provided in the wireless communication terminal of the user 1 embodied as a mobile phone or smartphone 4, in that it can record a wireless connection with the smartphone 4 for transmitting and receiving signals via a suitable interface 8, for example by means of Bluetooth. Thus, essential steps of the embodiment of the method associated with the second embodiment of the warning device system 2 shown here take place via a computer program product which can be installed on the smartphone 4. Although in this second exemplary embodiment the actual third position P 3 is determined "autonomously" by the warning triangle 3 by means of the locating device 6 installed therein; however, the ongoing checking and logging of the third position P 3 takes place on the evaluation unit 7 of the smartphone 4.FIG. 4 shows a schematic illustration as a view of a third exemplary embodiment of a warning device system 2 according to the invention, which represents a further preferred variant. Particular advantages are obtained here, in particular compared with the first exemplary embodiment, again with regard to user-friendliness and production costs reduced by system technology, such as exposure to weather. It is further advantageous in the third embodiment that the warning triangles 3 already used at present can be used without a modification in a warning device system 2 according to the invention. As in the second embodiment, a computer program product executes the method according to the invention on a wireless communication terminal of the user 1 embodied as a smartphone 4. For this purpose, not only its evaluation unit 7 and output unit 5, but also its locating device 6, are used as means of the smartphone 4. The third embodiment of the warning device system 2 thus supports a user 1, in accordance with recommendations automatically created according to the invention, to include a conventional warning triangle and to position it optimally.FIG. 5 shows steps of an exemplary embodiment of a method according to the invention for assisting a user of a means of transport during the operation of a warning device system. Steps 600 and 700 which are essential according to the invention are represented here in boxes with a solid framing line, while steps 110, 103, 104, 200 to 500 and 900 which can optionally be carried out are indicated by dashed framing lines.In a preferred development of the method according to the invention, three relevant positions to be differentiated, in particular, are determined terrestrially and / or satellite-assisted as optional steps for the purpose of their closer position determination even with real, environment-related location coordinates. Thus, in a step 110, the means of transportation for determining the first position is located and therefore the latter is not only automatically set computationally as a starting point in this embodiment after the means of transportation has come to a standstill. Likewise, the location coordinates of the warning device unit can be located in an optional step 103 for determining a current third position of the warning device unit. In a further optional step 104, the location coordinates of the user can be located and tracked during the method according to the invention, provided that it carries with it a mobile wireless communication terminal, preferably a mobile telephone, by means of which a current fourth position of the mobile wireless communication terminal can be determined continuously and / or intermittently.In further developed embodiments of the invention, with optional steps 200 with 400, 300 with 500, different additional information, which can be acquired or determined from existing systems in connection with the first position, can be used as additional influencing variables:On the one hand, the road type at the first position can be determined in step 200 and incorporated as an influencing variable in step 400. For example, in the course of the locating of the means of transport taking place in step 110, for example via a navigation system which is already present, traffic situation-relevant context information can be obtained simultaneously therewith. The recommendation of the target position for the warning triangle to be placed as a second position can thus also take into account the context information relating to a road type in each case at the first and / or the second position, which context information is already stored on local and / or remote storage media, such as complete road maps, the traffic flowing in the traffic network and at least medium-term to permanently valid bid zones, in particular speed restrictions. For refinement, it is also further conceivable that context information reported from a navigation system for the current traffic, such as, for example, the actual speed of the moving traffic and the traffic density, which both have a considerable influence on the safety distance to be observed, can be used.On the other hand, in step 300, a movement characteristic variable can be determined at the first position, which movement characteristic variable can be included as an influencing variable in step 500.On the basis of the first position set and / or determined in step 110, a second position is automatically defined by the user as a suitable, preferably ideal target position for a warning device unit to be positioned in step 600. Optionally, step 600 is performed involving the road type of step 400 and / or the motion characteristic of step 500.In a subsequent step 700, the second position is displayed to the user in order to know in which direction and how far from the first position it must travel, for example with the warning triangle, in order to sufficiently secure the first position from approaching traffic.In order to support the user not only at the beginning but also continuously, an indication can be output with optional step 800 and / or a continuous or repeated display of the second position can take place, such as for example with a displayed compass arrow and / or repeated voice commands of a navigation system. Since step 800 is carried out on the assumption that the user has not yet reached the recommended target position, the second position, this is automatically checked by matching with the third position of the warning device unit itself. Alternatively or additionally, the second position may be matched with the fourth position of the wireless communication terminal, this involving the assumption of a coincidence of the third position with the fourth position, by both of these device units, for example the warning triangle to be set up and a mobile telephone, being carried simultaneously by the user, provided he is using the warning device system according to the invention.In order to prevent the user from forgeting and leaving the erected warning device unit and / or its mobile wireless communication terminal last when moving away from the first position, for example when approaching again after repair of the roadside vehicle has been completed by a mobile workshop service or after clearing an accident site by towing a vehicle that is no longer functionally reliable, an alarm signal can be output to the user in step 900, for example by a horn or a beep in the interior of the means of transportation as soon as it is registered that the means of transportation leaves the first position and / or is ready for operation. For this purpose, an automatic adjustment takes place between, on the one hand, the first position and, on the other hand, the third position and / or the fourth position.List of reference numbers:1 User 2 Warning device 3 Warning device unit 4 Mobile wireless communication terminal 5 Output unit 6 Locating device 7 Evaluation unit 8 First interface 10 Means of transportation 20 Road type 21 Movement parameter 100- 900 Method steps P 10 First position P 2 Second position P 3 Third position P 4 Fourth position

Claims

Method for assisting a user (1) of a means of transportation (10) in the operation of a warning device system (2) having a warning device unit (3) which is removable from the means of transportation (10) and is set up to indicate a first position (P10) of the means of transportation (10) which is at a standstill, comprising the steps of: - automatically defining (600), on the basis of the first position (P10), a second position (P2) as target position for a warning device unit (3), - displaying (700) the second position (P2), - locating (104) of a mobile wireless communication terminal (4), preferably a mobile telephone, of the user (1) in order to determine a current fourth position (P4) of the mobile wireless communication terminal (4), outputting (800) an indication and / or continued or repeated display of the second position (P 2) as long as the second position (P 2) deviates from the fourth position (P 4).Method according to claim 1, further comprising: - preferably locating (110) the means of transportation (10) for determining the first position (P10) for defining (600) the second position (P2), and / or - locating (103) the warning device unit (3) for determining a current third position (P3) of the warning device unit (3), and / or - outputting (800) an indication and / or continued or repeated display of the second position (P2) as long as the second position (P2) deviates from the third position (P3).Method according to claim 2, further comprising: - outputting (900) an alarm signal to the user (1) as soon as the means of transport (10) leaves the first position (P10) and / or is ready to leave, if the third position (P3) and / or the fourth position (P4) currently deviates from the first position (P10).Method according to one of the preceding claims, further comprising: - determining (200) a road type (20) at the first position (P10), - including (400) the road type (20) as influence variable in the defining (600) of the second position (P2).Method according to one of the preceding claims, further comprising: - determining (300) a movement characteristic variable (21) of the means of transportation (10) before standstill, - including (500) the movement characteristic variable (21) as an influence variable in the defining (600) of the second position (P2).Method according to one of the preceding claims, wherein the display (700) is effected: - by means of a screen, and / or - by means of an acoustic signal output unit and / or voice output unit, and / or - on the mobile wireless communication terminal (4) of the user (1), and / or - on an output unit (5) which is comprised by the warning device unit (3), preferably by a warning triangle.Method according to one of Claims 2 to 6, wherein the locating (110, 103, 104) is carried out by means of a terrestrial and / or satellite-based locating apparatus (6), in particular on the basis of radio-based navigation systems, preferably by means of: - a navigation system arranged on the means of transport (10), and / or - a receiver, arranged in particular on the warning apparatus unit (3), for a global navigation satellite system, and / or - the mobile wireless communication terminal (4).Warning device system (2) for protecting a means of transport (10), comprising: - an evaluation unit (7) and / or a first, preferably wireless, interface (8) to an evaluation unit (7) arranged externally, preferably in the means of transport (10), - an output unit (5) having a second interface to the evaluation unit (7), - preferably further comprising a terrestrial and / or satellite-supported locating device (6), in particular on the basis of radio-based navigation systems, which is configured to carry out a method according to one of Claims 1 to 7.Computer program product comprising instructions which, if they are executed - on an evaluation unit (7) of a warning device unit (3) for a warning device system (2) for safeguarding a means of transport (10), and / or - on an evaluation unit (7) of a warning device system (2) according to claim 8, cause the evaluation unit (7) to execute the steps of a method according to one of claims 1 to 7, wherein the warning device unit (3) is removable from the means of transport (10) and is configured to indicate a first position (P10) of the means of transport (10) which is at a standstill, comprising: - a terrestrial and / or satellite-supported locating device (6), in particular on the basis of radio-based navigation systems, - an evaluation unit (7) and / or a preferably wireless interface to an interface to a location in a mobile wireless communication terminal (4), preferably in a mobile telephone, Evaluation unit arranged in a user (1), - an output unit (5) and / or a preferably wireless interface to the mobile wireless communication terminal (4) with an output unit (5), wherein - the locating device (6) is configured to determine a current third position (P3) of the warning device unit (3), - the evaluation unit (7) is configured to automatically define a second position (P2) as target position for a warning device unit (3) on the basis of the first position (P10), and - the output unit (5) and / or the mobile wireless communication terminal (4) is configured to indicate the second position (P2) by means of the output unit (5).Means of transportation (10) comprising a computer program product according to claim 9 and / or a warning device unit (3) for a warning device system (2) for protecting a means of transportation (10), wherein the warning device unit (3) is removable from the means of transportation (10) and is configured to indicate a first position (P10) of the means of transportation (10) being stationary, comprising: - a terrestrial and / or satellite-supported locating device (6), in particular based on radio-based navigation systems, - an evaluation unit (7) and / or a preferably wireless interface to an evaluation unit arranged in a mobile wireless communication terminal (4), preferably in a mobile telephone, of a user (1), - an output unit (5) and / or a preferably wireless interface to the mobile wireless communication terminal (4) with an output unit (5), wherein - the locating device (6) is configured to determine a current third position (P3) of the warning device unit (3), - the evaluation unit (7) is configured to automatically define a second position (P2) as target position for a warning device unit (3) on the basis of the first position (P10), and - the output unit (5) and / or the mobile wireless communication terminal (4) is configured to indicate the second position (P2) by means of the output unit (5).

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