Optimized device for signaling road emergencies

Abstract

A road emergency warning device (200, 200', 200") that can be installed on at least one first vehicle and one second vehicle, At least one impact sensor and detector unit (206), At least one transmitter-receiver unit (207) configured to transmit / receive emergency signals detected by an impact sensor and detector unit (206) or detected by manual and / or voice activation by a user, The system comprises at least one dashboard (201) having at least one button (202) for transmitting an emergency signal or a virtual "warning triangle" (202T), and at least one button (203) for transmitting signals (203E...,203N) related to the type of emergency being reported. The devices (200, 200', 200") are always activated to receive and can be activated manually using buttons (202, 203) and / or by voice, and / or automatically by detecting a collision or malfunction of the first vehicle. The transmitter-receiver unit (207) is configured to transmit an emergency signal from the first device (200') to at least one second device (200") installed on a second vehicle that is located at or passing within a distance D or less from the first vehicle.

Description

Technical Field

[0001] The present invention relates to an optimized device for signal transmission in road emergencies.

[0002] In particular, the present invention relates to an optimized device for signal transmission in road emergencies that can be used to remotely generate and transmit danger signals related to land vehicles such as automobiles, motorcycles, and bicycles.

Background Art

[0003] As is well known, land vehicles are equipped with accessories and devices that can signal difficult situations that the vehicle and / or its driver may face. These accessories and devices include conventional warning triangular display boards that can be manually installed by the driver at an appropriate distance on the road, and parking lights that can be activated by the driver by pressing a button indicating a triangle (hazard) that is usually arranged on the dashboard of the vehicle. The type shown in FIG. 1 shows a system 100 of buttons for activating different functions of an automobile, including the function of activating the parking lights via button 101.

[0004] Therefore, in any dangerous situation that the driver wishes to report, first, an operation to activate the flashing of the parking lights is performed, then an operation to stop the vehicle is performed, and finally, the triangular display board must be installed on the road so that it can be seen from all vehicles entering the lane when getting out of the vehicle.

[0005] These steps pose a danger to the driver exposed to the moving vehicle, and also pose a danger to the driver during driving of coming into contact with pedestrians without being able to decelerate appropriately. The latter situation may be further aggravated by specific environmental and road conditions such as fog, rain, and sharp curves with poor visibility.

[0006] Furthermore, under current circumstances, it is particularly difficult to communicate from a distance about vehicles involved in road accidents, vehicles with drivers who are ill, vehicles that have broken down, or vehicles affected by accidents that prevent the driver from getting out of the vehicle (for example, due to a physical disability). Finally, since vehicles such as bicycles and motorcycles do not have warning triangles, they cannot communicate accidents or situations involving vehicle breakdowns from a distance.

[0007] Known systems are only capable of transmitting hazard signals in one direction (for example, only on the same road a vehicle is traveling on) and cannot warn vehicles approaching from the opposite direction that may be affected by the emergency.

[0008] Finally, the current signal transmission system requires a significant amount of implementation time and poses an additional risk to vehicles in close proximity to vehicles affected by an emergency.

[0009] A solution to this problem is described in patent application EP1262935 granted to Siemens AG, which describes a method for transmitting data packets between a first transmitting user terminal and a second receiving user terminal at pre-set times via a direct wireless connection at intervals of at least one second. The user terminals that receive at least a portion of the status information are updated within each user terminal until the next transmission time. In this way, information such as the vehicle's location or speed, or emergency information such as traffic information, can be exchanged. The receiving user terminal communicates with the vehicle to determine its response (e.g., automatic deceleration, brake activation, or alarm signal activation). These communications are performed automatically via the wireless connection.

[0010] Devices for generating danger signals (i.e., virtual warning triangles as described in Italian Patent No. 102016000073534 granted to the applicant himself) are also known. Such devices solve the problem of signaling accidents or road emergencies from a distance, but they cannot automatically adjust the distance over which the aforementioned signals are transmitted.

[0011] While these solutions have advantages in several respects, they are limited in that they cannot send warning signals only to vehicles located within the actual area where a danger or emergency has occurred. Therefore, in known systems, the distance over which emergency signals are transmitted is not optimized based on event parameters or user customization. [Overview of the project]

[0012] The object of the present invention is to provide a road emergency warning optimization device suitable for land vehicles, which enables the transmission and reception of vehicle-related emergency situations in an area and distance optimized with respect to the event itself, or through user customization, and thus has characteristics that overcome the limitations that still affect the aforementioned system, with reference to the state of the art.

[0013] A further object of the present invention is to provide a road emergency warning optimization device that enables the immediate transmission and reception of emergency signals in all directions within an optimized operating range.

[0014] According to the present invention, a road emergency warning optimization device is provided, as defined in claim 1.

[0015] To better understand the present invention, preferred embodiments will be described as purely non-limiting examples with reference to the accompanying drawings. [Brief explanation of the drawing]

[0016] [Figure 1] A schematic diagram illustrating the road emergency warning optimization device according to the present invention is shown.

[0017] [Figure 2] This diagram shows the operation of the road emergency warning optimization device according to the present invention. [Modes for carrying out the invention]

[0018] Referring to these figures, particularly Figure 1, the road emergency warning optimization device according to the present invention is shown.

[0019] Hereinafter, a device 200 installed in at least one first vehicle involved in an emergency situation will be referred to as device 200', and a similar device installed in at least one second vehicle will be referred to as device 200''. Devices 200' and 200'' are similar, have the same functions and components, and manage the transmission or reception of signals depending on whether the vehicle on which device 200 is installed is affected by the emergency or is arriving at the location where the emergency is occurring.

[0020] More specifically, the Road Emergency Warning Optimizer 200, 200', and 200'' are: - At least one impact sensor and detector unit 206 configured to detect the speed at which the first vehicle is hit or impacted, and to emit an emergency signal following the detection of the collision or impact, - At least one transmitter-receiver assembly 207 configured to transmit / receive emergency signals detected by the impact sensor and detector unit 206 or detected by manual and / or voice activation by the user, - comprising at least one dashboard 201, which has at least one manual operation button 202 on the transmitter-receiver unit 207 for transmitting a first emergency signal or virtual “warning triangle” 202T, and at least one manual operation button 203 on the transmitter-receiver unit 207 for transmitting a second signal 203E...,203N related to the type of emergency to be reported.

[0021] The road emergency warning optimization devices 200, 200', 200'' are always activated for reception and can be manually activated using the buttons 202, 203 and / or by voice, and / or automatically activated by detecting a collision or malfunction of the first vehicle by the impact sensor and detector unit 206 to initiate transmission.

[0022] The transmitter-receiver unit 207 is configured to transmit an emergency signal from the first device 200' installed in the first vehicle where a collision, accident, malfunction, or emergency has occurred to at least one second device 200'' installed in a second vehicle that is present or passing within a distance D or less from the first vehicle.

[0023] According to one aspect of the present invention, the road emergency warning optimization devices 200, 200', 200'' include - an emergency acoustic beacon 204, - voice operation means 205, - an impact sensor and detector unit 206, - a transmitter-receiver unit 207 connected to the impact sensor and detector unit 206 and configured to transmit / receive an emergency signal detected by the impact sensor and detector unit 206, - at least one first manual operation button 202 capable of activating the transmitter-receiver unit 207 to transmit an emergency signal of the "triangle display board" type referred to by reference number 202T, and at least one second manual operation button 203 capable of activating the transmitter-receiver unit 207 to transmit signals 203E to 203N related to the type of emergency to be notified, and a dashboard 201, - a connection unit 208, - a battery 209 capable of supplying power to the road emergency warning optimization device 200.

[0024] The road emergency warning optimization device 200 is configured to generate an emergency signal or a virtual "triangle display board" so as to replace the currently placed "triangle display board" by the driver of the vehicle in an emergency situation near the vehicle itself.

[0025] The device 200, particularly the transmitter-receiver unit 207, is configured to transmit an emergency signal from a first device 200' installed in a first vehicle in which an accident or failure has occurred to at least one second device 200" installed in a second vehicle that is present or passing within a distance D or less from the emergency location.

[0026] The impact sensor and detector unit 206 is configured to detect, at a specific time, the speed at which the first vehicle is subjected to a collision or impact and to activate the transmitter-receiver unit 207.

[0027] According to one aspect of the present invention, the distance D at which the transmitter-receiver unit 207 transmits the emergency signal correlates with the speed at which the first vehicle receives the impact causing the emergency situation, detected by the impact sensor and detector unit 206.

[0028] According to one aspect of the present invention, the distance D is proportional to the impact speed of the first vehicle.

[0029] According to one aspect of the present invention, the distance D can be set by the user, particularly by the driver of the first vehicle.

[0030] According to one aspect of the present invention, the distance D can preferably be set by the user with a series of specific values included between 50 m, 150 m, and 1 km from the transmission location, i.e., the emergency location.

[0031] According to one aspect of the present invention, the maximum distance D between the first vehicle in an emergency situation where the first device 200' that emits a danger signal is installed and the second vehicle where the second device 200" that receives the danger signal is installed is a function of the average speed or instantaneous speed of the first vehicle.

[0032] According to one aspect of the present invention, the average speed of the first vehicle is evaluated over a time interval t that occurs before the impact or blocking of the first vehicle. Alternatively, the distance D is evaluated based on the instantaneous speed of the first vehicle at the time of the impact or emergency situation.

[0033] According to one aspect of the present invention, the distance D is -If the average or instantaneous speed of the first vehicle falls within the range of 0 km / h to 60 km / h, then it falls within the range of 50 m to 150 m. -If the average or instantaneous speed of the first vehicle falls within the range of 60 km / h to 120 km / h, then it falls within the range of 150 m to 500 m. - If the average or instantaneous speed of the first vehicle exceeds 120 km / h, it falls within the range of 500m to 1km.

[0034] According to one aspect of the present invention, the maximum distance D between a first vehicle in an emergency situation, which is equipped with a first device 200' that emits a danger signal, and a second vehicle, which is equipped with a second device 200'' that receives a danger signal, is a function of the average or instantaneous speed of the second vehicle. The speed of the second vehicle is detected by the device 200'' via GPS, or by a direct connection between the device 200'' and the second vehicle.

[0035] Advantageously, by sending and receiving emergency signals at a distance D related to the impact parameters or a user-defined setting, the emergency can be notified only to users potentially affected by the event, thus avoiding the device 200 sending or receiving irrelevant reports.

[0036] Therefore, advantageously, the device 200 is optimized for both receiving and transmitting emergency signals.

[0037] According to one aspect of the present invention, in the road emergency warning optimization device 200, 200', 200'', the dashboard 201 is incorporated into a reversible structure that opens automatically when the device 200, 200', 200'' detects a collision, impact, malfunction or emergency and / or receives an emergency signal from a first vehicle.

[0038] According to one aspect of the present invention, the devices 200, 200', 200'' have a structure that can be detachably fixed to the vehicle or the passenger compartment of the vehicle itself, and such a structure has a hinged base and cover so that in the open position the dashboard 201 is visible to the user, but in the closed position the cover overlaps the base and the same dashboard 201 is protected and concealed.

[0039] According to one aspect of the present invention, the devices 200, 200', 200'' include at least one system for projecting an optical signal having the shape of an emergency warning triangle, which is projected vertically above the first vehicle and / or forward relative to the first vehicle and / or backward relative to the first vehicle from the first vehicle in which the devices 200, 200', 200'' have detected an emergency.

[0040] According to one aspect of the present invention, the apparatus 200, 200', 200'' comprises at least one system for projecting an optical signal consisting of a hologram, such system being activated manually or automatically following the detection of an emergency and / or the reception of an emergency signal.

[0041] According to one aspect of the present invention, each device 200, 200', 200'' comprises one element for projecting a hologram, including a light source, a laser, or an LED, and when device 200'' receives an emergency signal transmitted by at least one device 200' installed in a first vehicle, the emergency signal can be projected into the passenger compartment of a second vehicle.

[0042] The signal or hologram projected into the cabin of the second vehicle flashes when the second vehicle is at a distance of D to Dmax from the first vehicle, and remains fixed when the second vehicle is at a distance of Dmax to 0 from the first vehicle on which device 200' is installed.

[0043] According to one aspect of the present invention, the apparatus 200, 200', 200'' comprises a projection system that is automatically activated by an impact sensor and a detector unit 206 and / or activated by manual activation.

[0044] According to one aspect of the present invention, the apparatus 200, 200', 200'' includes a projection system configured to project an optical signal at a distance X that varies in accordance with the velocity of the impact detected by the impact sensor and detector unit 206.

[0045] According to one aspect of the present invention, when a device 200' mounted on a first vehicle is activated, buttons 202T and 203E can be illuminated, while an emergency acoustic beacon 204 on a second vehicle equipped with another device 200'' in a passive configuration (i.e., a receiving configuration) is configured to emit a sound or voice announcement whose pitch becomes higher as the distance from the second vehicle to the first vehicle decreases.

[0046] In other words, each device 200, 200', 200'' includes a voice control means 205 configured to voice-activate the devices 200, 200', 200'' when the transmitter is activated and installed in the first vehicle, and a plurality of buttons that can be manually activated by the user to signal the type of emergency occurring in the first vehicle. When the device is in receiving operation, the plurality of buttons are configured to light up according to the type of emergency signaled by the first device 200'. Each device also includes at least one emergency acoustic beacon 204 configured to emit an audio signal whose volume increases inversely proportional to the distance D. The emergency acoustic beacon 204 is further configured to emit an audio announcement that identifies the nth cause of the emergency signaled by the first device 200', for example, a mechanical or electronic failure of the vehicle, or a health emergency, or an accident, or an emergency warning.

[0047] Therefore, the transmission of a signal from the first device 200' can be activated automatically via a sensor, manually via a button, or by voice. An emergency signal received by the device 200'' installed in the second vehicle is the illumination of an emergency button and / or the illumination of a button related to the type of emergency and / or the transmission of a voice signal and / or the transmission of a voice message specifying the type of emergency.

[0048] Advantageously, according to the present invention, the driver can be notified of an emergency situation by voice, and a more attention-grabbing warning can be given by increasing the pitch of the received acoustic signal.

[0049] Therefore, the road emergency warning optimization device 200 can be activated by voice using the voice control means 205, but in some embodiments, automatic activation or manual activation performed by the user using buttons 202, 203 may be provided.

[0050] Furthermore, the second button 203 may include multiple buttons, each used to signal different types of emergencies, for example, 203E for signaling a mechanical vehicle malfunction, 203F for signaling an electronic vehicle malfunction, 203G for signaling an accident, 203H for a health emergency, ..., 203N for signaling the nth cause of the emergency signal. As highlighted in Figure 1, the road emergency warning optimization device 200 is interfaced with unit 207 so that, after activation, it can transmit radio signals, GSM signals, GPS signals, and Wi-Fi signals.

[0051] In fact, when the device 200 is placed on the first vehicle and activated manually, the driver can decide whether to use only button 202, or to use button 202 in combination with one or more buttons that activate signals 203E...,203N. This type of activation is useful when the vehicle is already stopped and the driver can use their hands to press any available buttons.

[0052] On the other hand, if the driver is unable or unwilling to use their hands, they can use voice commands to send emergency signals.

[0053] According to another aspect of the present invention, the device 200 is connected to an impact sensor and detector unit 206 connected to the bumper, door, vehicle body, dashboard, and electrical system, so that the device 200 can automatically detect impacts and malfunctions of a certain intensity in the vehicle on which it is installed. In fact, when the impact sensor and detector unit 206 detects a collision or malfunction in the vehicle, the device 200 for land vehicles is automatically activated via the impact sensor and detector unit 206. In fact, when the device 200' of the first vehicle is automatically activated via the unit 206, both an emergency triangle signal 202T and signals 203E...,203N indicating a specific emergency signal are transmitted. This type of activation is effective when the vehicle is struck while still moving, as the driver does not need to use their hands to activate the device because the vehicle is still in motion.

[0054] Advantageously, according to the present invention, the device 200 is always in a passive state, i.e., it functions as a receiver.

[0055] Advantageously, according to the present invention, following startup, the device 200 transmits emergency signals 202T and 203E...,203N related to the type of emergency via the transmitter-receiver unit 207, which can then be received by other devices 200.

[0056] Furthermore, the signals transmitted by unit 207 of the device 200, which can be installed in the first vehicle, have different identification codes depending on the type of information (warning triangle, emergency, or both) transmitted to the second vehicle, which is also equipped with the device 200. In this way, when the device 200 installed in the second receiving vehicle detects signals 202T and 203E...,203N, the emergency audible beacon 204 emits a specific sound or voice announcement, and the corresponding buttons 202 and 203 in both vehicles light up. In this way, a virtual warning triangle is generated that does not require the driver to get out of the vehicle to signal an emergency. Furthermore, the type of emergency occurring (mechanical failure, electrical failure, accident, etc.) can also be indicated.

[0057] According to one aspect of the present invention, the device 200 includes a connection unit 208 configured to be connected to the vehicle's electrical system.

[0058] Advantageously, according to the present invention, the device 200 can be connected to an in-vehicle instrument.

[0059] According to one aspect of the present invention, the devices 200, 200', 200'' are connected to the vehicle's braking system, and the devices 200, 200', 200'' are installed on a second vehicle, and when a danger signal is received from the first vehicle, if the initial speed of the second vehicle exceeds a safety value Vmin, it is automatically and gradually decelerated to Vmin, and when the position detection system detects that the collision point of the first vehicle has been passed, the speed of the second vehicle is returned to the initial speed.

[0060] According to one aspect of the present invention, the device (200, 200', 200") includes a position detection system that detects and transmits the position of a first vehicle when the impact sensor and detector unit 206 detect an impact or when the device 200, 200', 200") is manually activated.

[0061] Advantageously, according to the present invention, the device 200 includes a portable power battery 209 that is applicable to other vehicles (such as bicycles).

[0062] Figure 2 shows an operation diagram representing the road emergency warning optimization device 200 for land vehicles according to the present invention.

[0063] According to one aspect of the present invention, signals 202T and 203E...,203N are received from the transceiver control unit at a distance D which is considered to be the radius of the signal transmission area.

[0064] According to one aspect of the present invention, when the first vehicle is a bicycle or a scooter, the road emergency warning optimization device includes a supply dynamo.

[0065] According to one aspect of the present invention, the road emergency warning optimization devices 200, 200', 200'' include a battery and / or a power supply module.

[0066] Therefore, the optimized device for transmitting road emergency signals according to the present invention enables the identification of the type of emergency at a distance related to the parameters of the impact, or at a user-defined distance, and the transmission of warning and / or emergency signals in an optimized manner without the driver having to leave the vehicle to be notified of the danger.

[0067] Another advantage of the optimized device for transmitting road emergency signals according to the present invention is that it is possible to emit such danger signals even under road and weather conditions where safety or visibility is reduced for the vehicle driver and surrounding drivers.

[0068] Ultimately, the device optimized for signal transmission in road emergencies according to the present invention makes it possible for drivers to easily recognize danger signals even in situations where they may be distracted while driving.

[0069] Advantageously, according to the present invention, since the hazard signal emitted by the optimized device is transmitted at a distance D that varies based on the impact velocity, it is possible to appropriately and effectively notify oncoming vehicles that may be affected not only by a direct impact with the first vehicle but also by an impact with debris or obstacles present on the road, the distance over which the debris is scattered is actually proportional to the impact velocity.

[0070] Furthermore, implementing a warning system that projects a hologram of the emergency warning triangle shape would provide a convenient and easily perceptible remote warning to oncoming vehicles and those further ahead.

[0071] Finally, it is evident that the optimized devices for signaling road emergencies described and illustrated herein may be subject to modification and alteration without departing from the scope of protection of the present invention as defined in the appended claims.

Claims

1. A road emergency warning optimization device (200, 200', 200") that can be installed on at least one first vehicle and one second vehicle, At least one impact sensor and detector unit (206) configured to detect the speed at which the first vehicle is hit or impacted, and to transmit an emergency signal following the detection of the collision or impact, At least one transmitter-receiver unit (207) configured to transmit / receive an emergency signal detected by the impact sensor and detector unit (206) or detected by manual and / or voice activation by the user, The system comprises at least one dashboard (201) having at least one manual operation button (202) on the transmitter-receiver unit (207) for transmitting a first emergency signal or a virtual “warning triangle” (202T), and at least one manual operation button (203) on the transmitter-receiver unit (207) for transmitting a second signal (203E..., 203N) related to the type of emergency to be reported, The road emergency warning optimization device (200, 200', 200") is always activated for receiving, and can be activated manually by using the buttons (202, 203) and / or by voice, and / or automatically by detecting a collision or malfunction of the first vehicle by the at least one impact sensor and detector unit (206), and the transmitter-receiver unit (207) is configured to transmit an emergency signal from the first device (200') installed in the first vehicle where a collision, accident, malfunction, or emergency has occurred to at least one second device (200") installed in the second vehicle that is at or passing within a distance D or less from the first vehicle. The distance D is proportional to the speed of the collision or impact experienced by the first vehicle, as detected by the at least one impact sensor and detector unit (206). The distance D can be manually set and customized by the user, or The distance D between the first vehicle in an emergency situation, which is equipped with the first device (200') that emits a signal, and the second vehicle, which is equipped with the second device (200") that receives the signal, is a function of the average or instantaneous speed of the first vehicle and is calculated based on a time interval t that occurs before the collision or impact, or before the emergency is reported manually or audibly, according to the Road Emergency Warning Optimizer (200, 200', 200”).

2. The road emergency warning optimization device (200, 200', 200") according to claim 1, characterized in that the dashboard is incorporated into a reversible structure that can be automatically opened when the road emergency warning optimization device (200, 200', 200") detects a collision, impact, malfunction or emergency and / or receives an emergency signal from the first vehicle, the structure being mountable in the vehicle or the passenger compartment of the vehicle and comprising a hinged base and cover, so that the dashboard (201) is visible to the user in the open position, but in the closed position where the cover overlaps the base, the dashboard (201) is protected and concealed.

3. The road emergency warning optimization device (200, 200', 200") according to claim 1, comprising at least one system for projecting an optical signal, wherein the signal has the shape of an emergency triangular warning sign, and is projected from the first vehicle in which the device (200, 200', 200") has detected an emergency, vertically above the first vehicle, and / or forward relative to the first vehicle, and / or backward relative to the first vehicle, and / or is projected from the device (200") which has received the emergency signal, into the cabin of the second vehicle.

4. The road emergency warning optimization device (200, 200', 200") according to claim 1, comprising at least one projection system for an optical signal consisting of a hologram, wherein the projection system is manually or automatically activated following detection of an emergency and / or reception of an emergency signal, and / or automatically activated by the impact sensor and detector unit (206), and / or activated by manual activation.

5. The road emergency warning optimization device (200, 200', 200") according to claim 4, characterized in that the projection system is configured to project an optical signal at a variable distance X, the distance of which changes according to the velocity of the impact detected by the impact sensor and detector unit (206).

6. A road emergency warning optimization device (200, 200', 200") according to claim 1, comprising: a voice operation means (205) configured to voice-activate the first device (200') installed in the first vehicle to initiate the transmission of an emergency signal; and a plurality of buttons (202, 203) that can be illuminated when the device (200') installed in the second vehicle receives an emergency signal, wherein each button corresponds to the type of signal (202T, 203E..., 203N) transmitted by the first device (200') installed in the first vehicle; and at least one emergency acoustic beacon (204) configured to emit a sound whose pitch increases as the distance from the second vehicle to the first vehicle decreases, and / or a voice announcement configured to identify the type of emergency signal transmitted from the first device (200').

7. The road emergency warning optimization device (200, 200', 200") according to claim 1, characterized in that, using the transmitter-receiver unit (207), the emergency signal transmitted by the first transmitting vehicle on which the device (200') is installed is identified by different codes corresponding to the signals (202T, 203E..., 203N) transmitted to the second receiving vehicle.

8. A road emergency warning optimization device (200, 200', 200") according to claim 1, comprising a connection to the brake system of the vehicle, wherein the device (200, 200', 200") is installed on the second vehicle, and when a danger signal is received from the first vehicle, if the initial speed of the second vehicle exceeds a safety value Vmin, the initial speed is automatically and gradually reduced to Vmin, and when the position detection system detects that the collision point of the first vehicle has been passed, the speed of the second vehicle is returned to the initial speed.

9. The road emergency warning optimization device (200, 200', 200") according to claim 1, further comprising a position detection system capable of detecting and transmitting the position of the first vehicle when the impact sensor and detector unit (206) detect an impact or when the device (200, 200', 200") is manually activated.

10. The aforementioned distance D is, If the average or instantaneous speed of the first vehicle falls within the range of 0 km / h to 60 km / h, then the range is 50 m to 150 m. If the average or instantaneous speed of the first vehicle falls within the range of 60 km / h to 120 km / h, then the range is 150 m to 500 m. The road emergency warning optimization device (200, 200', 200") according to claim 1, characterized in that when the average or instantaneous speed of the first vehicle exceeds 120 km / h, it falls within the range of 500 m to 1 km.

11. The road emergency warning optimization device (200, 200', 200") according to claim 3, characterized in that the signal or hologram projected onto the passenger compartment of the second vehicle flashes when the second vehicle is at a distance from the first vehicle that falls within the range of distance D to Dmax, and remains fixed when the second vehicle is at a distance from the first vehicle on which the device (200') is installed that falls within the range of distance Dmax to 0.

Images