Traffic control system for two-way single vehicle road section
By detecting the number of vehicles in real time and dynamically adjusting traffic control, the problem of low traffic efficiency on two-way single-vehicle road sections has been solved, achieving a balance in the number of vehicles and smooth traffic. It also has an early warning function to deal with traffic risks on special road sections.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- SINOHYDRO BUREAU 5
- Filing Date
- 2026-01-26
- Publication Date
- 2026-04-28
AI Technical Summary
In the existing technology, the traffic control methods for two-way single-vehicle road sections cannot adapt to real-time changes in traffic density, resulting in low traffic efficiency and potential traffic congestion.
The system uses a vehicle identification device to detect the number of vehicles in real time, and controls the gate and prompting device through a host computer to dynamically adjust the passage direction and release time to ensure a balance in the number of vehicles. Combined with historical passage rate and timer warning mechanism, the passage process is optimized.
It increased the number of vehicles that could pass through per unit time, reduced vehicle queuing time, improved traffic efficiency, and alerted staff to potential traffic risks in special road sections.
Smart Images
Figure CN121938210A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of traffic control technology, and in particular to a traffic control system for a two-way single-vehicle road section. Background Technology
[0002] In reality, many road sections allow only one-way traffic but also experience two-way traffic, such as construction zones, tunnels, mines, and narrow rural roads. Current control methods involve installing turnstiles at both ends of the road section, using static control to alternately allow or block vehicles at preset fixed intervals. However, in practice, traffic scenarios are dynamic and random; the number of vehicles waiting to pass in the two directions is generally different, sometimes significantly so. Therefore, using fixed-interval alternating passage cannot adapt to real-time changes in traffic density, resulting in low traffic efficiency and a low number of vehicles passing through per unit time. Furthermore, it can lead to vehicles from both directions meeting in one-way sections, causing traffic congestion. Summary of the Invention
[0003] To address the aforementioned technical problems in the prior art, this invention aims to provide a traffic control system for bidirectional single-vehicle road sections, which can improve the vehicle traffic efficiency of single-sided road sections (bidirectional single-vehicle road sections) and increase the number of vehicles that can complete the passage within a unit of time.
[0004] Specifically, the technical solution is as follows: A gate A is installed at one end of the road segment; a vehicle identification device A1 is installed at a preset distance outside the gate A; a vehicle identification device A2 and a prompting device A3 are installed at the entrance of the gate A; wherein, the gate A, the vehicle identification device A1, the vehicle identification device A2 and the prompting device A3 are all connected to the host computer. A gate B is installed at one end of the road segment; a vehicle identification device B1 is installed at a preset distance outside the gate B; a vehicle identification device B2 and a prompting device B3 are installed at the entrance of the gate B; wherein, the gate B, the vehicle identification device B1, the vehicle identification device B2 and the prompting device B3 are all connected to the host computer. The host computer is used to perform the following steps: Step 1: Open gates A and B; prompting device A3 prompts passage in the AB direction, prompting device B3 prompts waiting in the BA direction; at the same time, vehicle recognition devices A1 and B1 respectively identify the license plates of the first vehicle passing through the AB direction and the BA direction. Step II: Vehicle identification device A2 detects the number of vehicles SA2 entering the road segment along the AB direction. When the license plate identified by vehicle identification device A1 is detected, prompting device A3 prompts the AB direction to wait. B2 detects the number of vehicles SB21 leaving the road segment. When SB21=SA2, prompting device B3 prompts the BA direction to start passing. At the same time, vehicle identification device B1 re-identifies the license plate of the first vehicle passing through the BA direction. Step III: Vehicle identification device B2 detects the number of vehicles SB2 entering the road segment along the BA direction. When the license plate identified by vehicle identification device B1 is detected, prompting device B3 prompts the vehicle to wait in the BA direction. A2 detects the number of vehicles SA21 leaving the road segment. When SA21=SB2, prompting device A3 prompts the vehicle to proceed in the AB direction. At the same time, vehicle identification device A1 re-identifies the license plate of the first vehicle proceeding in the AB direction. Repeat steps II and III.
[0005] Furthermore, it also includes: If the vehicle identification device B1 does not detect any vehicles traveling in the BA direction after the start of the current cycle, then the prompting device A3 will continue to prompt for the AB direction to continue until the vehicle identification device B1 identifies the license plate of the first vehicle entering the road segment and the cycle will restart. If, after the AB direction traffic begins in the current cycle, the vehicle identification device A1 does not detect any vehicles traveling in the AB direction, then after the AB direction traffic ends, the prompting device B3 will continuously prompt for BA direction traffic until the vehicle identification device A1 identifies the license plate of the first vehicle entering the road segment and the cycle will restart.
[0006] Furthermore, it also includes: After each license plate recognition, vehicle recognition device A1 begins to detect the number of vehicles traveling in both directions A and B until the next license plate recognition. After each license plate recognition, vehicle recognition device B1 begins to detect the number of vehicles passing through BA until the next license plate recognition.
[0007] Furthermore, it also includes a timer: Based on the historical traffic speed V of the road segment and the number of vehicles waiting to pass s, the estimated travel time T is calculated using the following formula: T=(S+Ls) / V; In the formula, S is the road segment length and L is the single-vehicle interval distance; When passing through AB direction, the timer and the prompting device A3 are activated simultaneously; when passing through BA direction, the timer and the prompting device B3 are activated simultaneously. If the passage is not completed within the estimated passage time T, an early warning will be issued via the host computer.
[0008] Furthermore, it also includes: If a warning is issued N times consecutively, and the corresponding passage process all times out, then the historical passage rate V is updated, as shown in the following formula: V1 = (S + Ls1) / (T + T1); In the formula, V1 is the updated traffic rate, s1 is the average number of vehicles passing through N traffic cycles, T1 is the average timeout duration, and N≥3.
[0009] Compared to existing technologies, the technical solution provided by this invention collects the number of vehicles heading towards, entering, and exiting a two-way single-vehicle road segment, as well as the number of vehicles waiting to pass, through a vehicle identification device. Then, the host computer controls the opening and closing of the gate in real time, and in conjunction with the control prompt device to switch prompt signals, it can ensure that there are always vehicles passing through the road segment when there are many vehicles waiting to pass, thereby increasing the number of vehicles that can pass within a unit of time and improving traffic efficiency. In addition, adjusting the number of vehicles released in the corresponding time period according to the number of vehicles waiting to pass can reduce the queuing time of vehicles in the direction with more vehicles waiting to pass. Attached Figure Description
[0010] Figure 1 This is a schematic diagram of the traffic control system in one embodiment of the present invention. Detailed Implementation
[0011] The technical solutions provided by the present invention will be further described in detail below through embodiments and accompanying drawings.
[0012] Example 1 like Figure 1 As shown, turnstile A and turnstile B are installed at two ends of a two-way single-vehicle road segment (hereinafter referred to as the road segment). A vehicle identification device A1 is installed at a predetermined distance from turnstile A, and a vehicle identification device B1 is installed at a predetermined distance from turnstile B. Vehicle identification device A2 and a prompting device A3 are installed at the entrance of turnstile A; vehicle identification device B2 and a prompting device B3 are installed at the entrance of turnstile B. All of these devices are connected to a host computer in the control center and are controlled by the host computer to operate or be shut down. The distances between turnstile A and vehicle identification device A1, and between turnstile B and vehicle identification device B1, are not necessarily exactly equal and can be approximated based on the length of the road segment, road conditions, and historical vehicle traffic volume. The host computer can be a PC or a mobile terminal device, such as a mobile phone.
[0013] Vehicle identification devices A1 and B1 can be used to detect vehicle license plates and the number of vehicles heading towards the road segment in the current time period, thus providing the number of vehicles waiting to pass in the next time period. Vehicle identification devices A2 and B2 are used to detect the number of vehicles passing through the road segment towards the other side in the current time period, that is, the number of vehicles heading towards the road segment detected by the other vehicle identification device on the same side in the previous time period, to provide data support for the host computer to adjust the status of the same-side prompting device; they are also used to detect the number of vehicles exiting the road segment through themselves, that is, the number of vehicles heading towards the road segment detected by the other vehicle identification device on the opposite side in the previous time period, to ensure that all vehicles entering the road segment in the current time period have exited before starting vehicle traffic control for the next time period.
[0014] Specifically, let AB direction (i.e., from gate A to gate B) be the priority direction; vehicle identification devices A1 and B1 detect the number of vehicles SA1 and SB1 entering the road segment during the current time period. It should be noted that since it is a two-way alternating traffic system, there is actually no single priority direction. The priority direction is set here only to distinguish different traffic periods.
[0015] Both turnstile A and turnstile B are initially closed.
[0016] The host computer is used to perform the following steps: Step 1: Open gates A and B; prompting device A3 prompts passage in the AB direction, prompting device B3 prompts waiting in the BA direction; at the same time, vehicle recognition devices A1 and B1 respectively identify the license plates of the first vehicle passing through the AB direction and the BA direction. Step II: Vehicle identification device A2 detects the number of vehicles SA2 entering the road segment along the AB direction. When the license plate identified by vehicle identification device A1 is detected, prompting device A3 prompts the AB direction to wait. B2 detects the number of vehicles SB21 leaving the road segment. When SB21=SA2, prompting device B3 prompts the BA direction to start passing. At the same time, vehicle identification device B1 re-identifies the license plate of the first vehicle passing through the BA direction. Step III: Vehicle identification device B2 detects the number of vehicles SB2 entering the road segment along the BA direction. When the license plate identified by vehicle identification device B1 is detected, prompting device B3 prompts the vehicle to wait in the BA direction. A2 detects the number of vehicles SA21 leaving the road segment. When SA21=SB2, prompting device A3 prompts the vehicle to proceed in the AB direction. At the same time, vehicle identification device A1 re-identifies the license plate of the first vehicle proceeding in the AB direction. Repeat steps II and III.
[0017] Among them, the vehicle recognition devices A1, A2, B1 and B2 can adopt a vehicle license plate recognition system (VLPR) suitable for parking lots, which can recognize license plates and record the number of vehicles passing through. The count is incremented by one for each license plate recorded and the count is reset to zero after each period of passage ends.
[0018] As can be seen, the above describes a scenario with a large number of vehicles waiting to pass in both directions AB and BA. In practice, there may also be scenarios with fewer vehicles waiting to pass. To address this, the traffic control system for a two-way single-vehicle road segment provided in this embodiment releases vehicles waiting to pass in the following manner: If the vehicle identification device B1 does not detect any vehicles traveling in the BA direction after the start of the current cycle, then the prompting device A3 will continue to prompt for the AB direction to continue until the vehicle identification device B1 identifies the license plate of the first vehicle entering the road segment and the cycle will restart. If, after the AB direction traffic begins in the current cycle, the vehicle identification device A1 does not detect any vehicles traveling in the AB direction, then after the AB direction traffic ends, the prompting device B3 will continuously prompt for BA direction traffic until the vehicle identification device A1 identifies the license plate of the first vehicle entering the road segment and the cycle will restart.
[0019] Optionally, the number of vehicles entering the waiting area can be counted to provide data for subsequent traffic control. Specifically, after each license plate recognition, vehicle recognition device A1 starts detecting the number of vehicles traveling in the AB direction until the next license plate recognition, i.e., the number of vehicles SA1; after each license plate recognition, vehicle recognition device B1 starts detecting the number of vehicles traveling in the BA direction until the next license plate recognition, i.e., the number of vehicles SB1. The number of vehicles detected traveling in the BA direction is the number of vehicles waiting to pass through the road segment from the BA direction in the current cycle, which is also the number of vehicles entering the road segment from the BA direction in the next cycle; the number of vehicles detected traveling in the AB direction is the number of vehicles waiting to pass through the road segment from the AB direction in the current cycle, which is also the number of vehicles entering the road segment from the AB direction in the next cycle. Due to the two-way single-lane characteristic of the road segment, only one direction of traffic can exist at any given time. Therefore, the number of vehicles waiting to pass in the AB direction or the AB direction in the current cycle can be recorded as s.
[0020] Furthermore, since two-way single-vehicle road sections are generally special road sections, such as construction zones or sections affected by geological disasters, they are prone to unexpected situations that affect traffic, but road management personnel may find it difficult to detect these situations in time, posing a high risk. To address this, the traffic control system for two-way single-vehicle road sections provided in this embodiment also includes a timer. The estimated travel time T is calculated based on the number of vehicles (s) in transit, combined with the historical traffic speed (V) of the road section, using the following formula: T=(S+Ls) / V; In the formula, S is the road segment length and L is the single-vehicle interval distance; When traveling in the AB direction, the timer and prompting device A3 start synchronously; when traveling in the BA direction, the timer and prompting device B3 start synchronously. If the travel is not completed within the estimated travel time T, an early warning will be issued via the host computer. Once the travel process in the corresponding direction for the current time period has expired, the early warning will be lifted, and the host computer will retain the early warning information.
[0021] During alternating passage, weather conditions, daytime and nighttime lighting conditions, and changes in road conditions can all affect vehicle passage speed. Therefore, the historical passage speed V should be updated in real time. If the host computer issues warnings N times consecutively and the passage process completes within the time limit each timeout, the historical passage speed V is recalculated and updated to V1 based on the average timeout duration T1, as shown in the following formula: V1 = (S + Ls1) / (T + T1); In the formula, s1 is the average number of vehicles passing through each of the N passages. Where N ≥ 3.
[0022] As can be seen from the above embodiments and accompanying drawings, the technical solution provided by the present invention switches the prompt signal in real time according to the number of vehicles entering and exiting the two-way single-vehicle road segment and the number of vehicles waiting to pass. This ensures that there are always vehicles passing through the road segment when there are many vehicles waiting to pass, thereby increasing the number of vehicles that can pass within a unit of time and improving traffic efficiency. In addition, adjusting the number of vehicles released in the corresponding time period according to the number of vehicles waiting to pass can reduce the queuing time of vehicles in the direction with more vehicles waiting to pass.
[0023] Furthermore, when there are few vehicles waiting to pass, one-way passage can be implemented through the corresponding prompting device when there are no vehicles waiting to pass in the opposite direction, avoiding unnecessary interception and affecting traffic efficiency; based on the historical traffic rate V combined with the timer, an early warning can be issued when the passage time is too long, which can remind staff to pay attention to changes in traffic conditions; the estimated passage time can be adjusted according to the actual traffic rate, which can realize dynamic adjustment under different traffic conditions.
Claims
1. A traffic control system for a two-way single-vehicle road section, characterized in that, include: A gate A is installed at one end of the road segment; a vehicle identification device A1 is installed at a preset distance outside the gate A; a vehicle identification device A2 and a prompting device A3 are installed at the entrance of the gate A; wherein, the gate A, the vehicle identification device A1, the vehicle identification device A2 and the prompting device A3 are all connected to the host computer. A gate B is installed at one end of the road segment; a vehicle identification device B1 is installed at a preset distance outside the gate B; a vehicle identification device B2 and a prompting device B3 are installed at the entrance of the gate B; wherein, the gate B, the vehicle identification device B1, the vehicle identification device B2 and the prompting device B3 are all connected to the host computer. The host computer is used to perform the following steps: Step 1: Open gates A and B; prompting device A3 prompts passage in the AB direction, prompting device B3 prompts waiting in the BA direction; at the same time, vehicle recognition devices A1 and B1 respectively identify the license plates of the first vehicle passing through the AB direction and the BA direction. Step II: Vehicle identification device A2 detects the number of vehicles SA2 entering the road segment along the AB direction. When the license plate identified by vehicle identification device A1 is detected, prompting device A3 prompts the AB direction to wait. B2 detects the number of vehicles SB21 leaving the road segment. When SB21=SA2, prompting device B3 prompts the BA direction to start passing. At the same time, vehicle identification device B1 re-identifies the license plate of the first vehicle passing through the BA direction. Step III: Vehicle identification device B2 detects the number of vehicles SB2 entering the road segment along the BA direction. When the license plate identified by vehicle identification device B1 is detected, prompting device B3 prompts the vehicle to wait in the BA direction. A2 detects the number of vehicles SA21 leaving the road segment. When SA21=SB2, prompting device A3 prompts the vehicle to proceed in the AB direction. At the same time, vehicle identification device A1 re-identifies the license plate of the first vehicle proceeding in the AB direction. Repeat steps II and III.
2. The traffic control system for a two-way single-vehicle road section as described in claim 1, characterized in that, Also includes: If the vehicle identification device B1 does not detect any vehicles traveling in the BA direction after the start of the current cycle, then the prompting device A3 will continue to prompt for the AB direction to continue until the vehicle identification device B1 identifies the license plate of the first vehicle entering the road segment and the cycle will restart. If, after the AB direction traffic begins in the current cycle, the vehicle identification device A1 does not detect any vehicles traveling in the AB direction, then after the AB direction traffic ends, the prompting device B3 will continuously prompt for BA direction traffic until the vehicle identification device A1 identifies the license plate of the first vehicle entering the road segment and the cycle will restart.
3. The traffic control system for a two-way single-vehicle road section as described in claim 1, characterized in that, Also includes: After each license plate recognition, vehicle recognition device A1 begins to detect the number of vehicles traveling in both directions A and B until the next license plate recognition. After each license plate recognition, vehicle recognition device B1 begins to detect the number of vehicles passing through BA until the next license plate recognition.
4. The traffic control system for a two-way single-vehicle road section as described in claim 3, characterized in that, It also includes a timer: Based on the historical traffic speed V of the road segment and the number of vehicles waiting to pass s, the estimated travel time T is calculated using the following formula: T=(S+Ls) / V; In the formula, S is the road segment length and L is the single-vehicle interval distance; When passing through AB direction, the timer and the prompting device A3 are activated simultaneously; when passing through BA direction, the timer and the prompting device B3 are activated simultaneously. If the passage is not completed within the estimated passage time T, an early warning will be issued via the host computer.
5. The traffic control system for a two-way single-vehicle road section as described in claim 4, characterized in that, Also includes: If a warning is issued N times consecutively, and the corresponding passage process all times out, then the historical passage rate V is updated, as shown in the following formula: V1 = (S + Ls1) / (T + T1); In the formula, V1 is the updated traffic rate, s1 is the average number of vehicles passing through N traffic cycles, T1 is the average timeout duration, and N≥3.