CN114655205A - Speed regulation prompting method in driving process - Google Patents
Speed regulation prompting method in driving process Download PDFInfo
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- CN114655205A CN114655205A CN202210355462.XA CN202210355462A CN114655205A CN 114655205 A CN114655205 A CN 114655205A CN 202210355462 A CN202210355462 A CN 202210355462A CN 114655205 A CN114655205 A CN 114655205A
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- 238000000034 method Methods 0.000 title claims abstract description 69
- 238000005457 optimization Methods 0.000 abstract description 4
- 206010039203 Road traffic accident Diseases 0.000 abstract description 2
- 238000010276 construction Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 241000251468 Actinopterygii Species 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000004556 brain Anatomy 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010187 selection method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units, or advanced driver assistance systems for ensuring comfort, stability and safety or drive control systems for propelling or retarding the vehicle
- B60W30/14—Adaptive cruise control
- B60W30/143—Speed control
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units, or advanced driver assistance systems for ensuring comfort, stability and safety or drive control systems for propelling or retarding the vehicle
- B60W30/18—Propelling the vehicle
- B60W30/18009—Propelling the vehicle related to particular drive situations
- B60W30/18159—Traversing an intersection
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
- B60W50/08—Interaction between the driver and the control system
- B60W50/14—Means for informing the driver, warning the driver or prompting a driver intervention
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2520/00—Input parameters relating to overall vehicle dynamics
- B60W2520/10—Longitudinal speed
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2554/00—Input parameters relating to objects
- B60W2554/40—Dynamic objects, e.g. animals, windblown objects
- B60W2554/408—Traffic behavior, e.g. swarm
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2554/00—Input parameters relating to objects
- B60W2554/80—Spatial relation or speed relative to objects
- B60W2554/802—Longitudinal distance
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2720/00—Output or target parameters relating to overall vehicle dynamics
- B60W2720/10—Longitudinal speed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2720/00—Output or target parameters relating to overall vehicle dynamics
- B60W2720/10—Longitudinal speed
- B60W2720/103—Speed profile
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2754/00—Output or target parameters relating to objects
- B60W2754/10—Spatial relation or speed relative to objects
- B60W2754/50—Relative longitudinal speed
Abstract
The invention provides a speed regulation prompting method in a driving process, which comprises the following steps: acquiring a current speed value of a vehicle; determining a plurality of groups of first speed reference values and second speed reference values according to the distance between the vehicle and the next traffic light, the current time and the starting time and the ending time of the subsequent green light of the next traffic light; and performing speed regulation prompting based on the relative relation graph of the current speed value, the first speed reference value and the second speed reference value. According to the speed regulation prompting method in the driving process, vehicles can pass through the traffic light intersection in the period when the green light is on, the appearance experience of drivers and passengers is improved, the travel time and cost are saved, the pollution of automobile tail gas is reduced, the occurrence probability of traffic accidents is reduced, the safety and the traffic efficiency are improved, and data support can be provided for improved facilities for improving road traffic such as traffic light configuration optimization, lane change, road construction optimization and the like.
Description
Technical Field
The invention relates to the technical field of driving adjustment, in particular to a speed adjustment prompting method in a driving process.
Background
At present, real-time speed regulation for driving is usually realized by adopting signal lamps in a vehicle. The signal lamp in the vehicle carries traffic states such as traffic signal lamp countdown, road canalization and congestion situations into the vehicle from the intersection, provides traffic information beyond visual range and intelligent driving assistance for drivers and passengers, and enables the drivers and passengers not to worry about influence on driving due to bad weather, tall buildings, greening vegetation or shielding of the large vehicle in front. In actual use, the signal lamp in the vehicle has the following defects: 1) only the drivers and passengers can know the congestion condition, but the traffic congestion condition cannot be dredged in advance; 2) the speed guidance of arriving at the intersection at the green light lighting time period of the intersection can not be provided for drivers and passengers, and the improvement of traffic efficiency is not beneficial.
Chinese patent publication No. CN105632202A, "a real-time speed adjustment guiding method and navigation software", discloses a real-time speed adjustment guiding method and navigation software, and the defects of the patent are: when the distance between two intersections is large, no selection method suitable for road conditions, vehicle conditions and driving habits of vehicle owners is provided, and in an actual environment, speed data is changed from time to time due to the road conditions, the traffic flow and the like. The driver and the crew cannot perform real-time speed adjustment according to one datum.
Therefore, how to provide an optimized speed regulation prompting method in the driving process becomes a technical problem to be solved urgently.
Disclosure of Invention
In view of this, the present invention is directed to a speed regulation prompting method during driving, which is used for providing a driver and a passenger with a speed interval selection for passing through a green light turn-on period of a next intersection, and guiding a vehicle to pass through the intersection in the green light turn-on period.
The invention provides a speed regulation prompting method in a driving process, which comprises the following steps:
acquiring a current speed value of a vehicle;
determining a plurality of groups of first speed reference values and second speed reference values according to the distance between the vehicle and the next traffic light, the current time and the starting time and the ending time of the subsequent green light of the next traffic light;
and performing speed regulation prompting based on the relative relation graph of the current speed value, the first speed reference value and the second speed reference value.
Further, the refresh frequency of the relative relation graph of the current speed value and the first speed reference value and the second speed reference value is 2-24 frames per second.
Further, the relative relationship graph of the current speed value and the first speed reference value and the second speed reference value can be represented as a straight line graph, an arc graph, a column graph or a monochromatic daily graph.
Furthermore, the first speed reference value and the second speed reference value of the same group are identified by a first color, and the first speed reference value and the second speed reference value of the adjacent group are identified by a second color.
Further, when the distance between the vehicle and the next traffic light is smaller than a first threshold value, the speed regulation prompting method is started.
Further, the speed regulation prompt comprises a voice prompt and a graphic prompt.
Further, the first speed reference value and the second speed reference value are both smaller than the speed limit of the road on which the vehicle is located.
Further, when the distance between the vehicle and the next traffic light is smaller than a second threshold value, the speed regulation prompting method is closed.
Further, the speed regulation prompting method is closed when the vehicle encounters an emergency or emergency braking. And when the vehicle starts again, starting the speed regulation prompting method.
Further, when the current speed value is between the first speed reference value and the second speed reference value of the adjacent group, a prompt for increasing the speed, decreasing the speed or keeping the current speed is performed based on the current speed value.
The speed regulation prompting method in the driving process has the following advantages:
1) the speed selection of one green light can be provided for a driver, so that vehicles can pass through a traffic light intersection in the green light lighting period, the effect of one green light and no resistance in passing is achieved, and the travel experience is improved; if the driver needs to have a short break in driving, the red light can be selected to reach the intersection at the moment of turning on, so that the rest time at most one minute is provided for the driver, and the driving comfort level is improved.
2) The travel process is smoother, the travel time and cost are saved, and the pollution of automobile exhaust is reduced.
3) After the method is popularized and applied, on one hand, drivers in the same road section receive guidance of similar speed navigation, and the vehicles can move through the fish naturally, so that the occurrence probability of traffic accidents is greatly reduced, the safety is improved, and the traffic efficiency is also improved; on the other hand, the urban brain can arrange a smooth line in advance according to the information data formed by the method, so that traffic jam is reduced from the source. The greater the number of populations to which the method is applied, the more significant the benefits of both.
4) The real-time dynamic data formed based on the method, traffic light configuration optimization, lane change, road construction optimization and other improved facilities for improving road traffic can obtain more detailed data support and more practical benefits.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a flow chart of a method for speed adjustment prompting during driving according to an exemplary first embodiment of the present invention;
fig. 2 is a histogram showing a relative relationship between a current speed value and a first speed reference value and a second speed reference value in a speed adjustment prompting method during driving according to an exemplary first embodiment of the present invention;
fig. 3 is a linear graph showing a relative relationship between a current speed value and a first speed reference value and a second speed reference value in a speed adjustment prompting method during driving according to an exemplary first embodiment of the present invention;
fig. 4 is an arc diagram illustrating a relative relationship between a current speed value and a first speed reference value and a second speed reference value in a speed regulation prompting method in a driving process according to an exemplary first embodiment of the present invention;
fig. 5 is a sector diagram of a relative relationship between a current speed value and a first speed reference value and a second speed reference value in a speed regulation prompting method in a driving process according to an exemplary first embodiment of the present invention;
fig. 6 is a histogram illustrating a relative relationship between a current speed value, a first speed reference value, and a second speed reference value, which are preferable in the speed adjustment prompting method during driving according to the exemplary third embodiment of the present invention;
fig. 7 is a monochrome daily graph in the speed adjustment prompting method during driving according to the exemplary fifth embodiment of the invention.
Detailed Description
Embodiments of the present invention are described in detail below with reference to the accompanying drawings.
It should be noted that, in the case of no conflict, the features in the following embodiments and examples may be combined with each other; moreover, all other embodiments that can be derived by one of ordinary skill in the art from the embodiments disclosed herein without making any creative effort fall within the scope of the present disclosure.
It is noted that various aspects of the embodiments are described below within the scope of the appended claims. It should be apparent that the aspects described herein may be embodied in a wide variety of forms and that any specific structure and/or function described herein is merely illustrative. Based on the disclosure, one skilled in the art should appreciate that one aspect described herein may be implemented independently of any other aspects and that two or more of these aspects may be combined in various ways. For example, an apparatus may be implemented and/or a method practiced using any number of the aspects set forth herein. Additionally, such an apparatus may be implemented and/or such a method may be practiced using other structure and/or functionality in addition to one or more of the aspects set forth herein.
Fig. 1 is a flowchart of a speed adjustment prompting method during driving according to an exemplary first embodiment of the present invention. As shown in fig. 1, the method for prompting speed adjustment in the driving process in the embodiment includes:
step S1: acquiring a current speed value of a vehicle;
step S2: determining a plurality of groups of first speed reference values and second speed reference values according to the distance between the vehicle and the next traffic light, the current time and the start time and the end time of the subsequent green light of the next traffic light;
step S3: and performing speed regulation prompting based on the relative relation graph of the current speed value, the first speed reference value and the second speed reference value.
It should be noted that if the next traffic light turns right without stopping, the processing is added with 3-5 seconds if not.
Specifically, as shown in fig. 2, when the vehicle drives from the intersection a to the intersection B to an arbitrary point C, and the time at this moment is T0, the current speed value of the vehicle at the point C is acquired according to the navigation device and is V0; obtaining the distance CB between the point C and the traffic lights of the intersection according to the positioning; acquiring the current time T0, acquiring the first starting time T1 and the first ending time T2 of the subsequent green light of the next traffic light; therefore, the speed V1 required by the vehicle to reach the intersection B at the time of T1 and the speed V2 required by the vehicle to reach the intersection B at the time of T2 can be obtained according to the distance CB, the current time T0, the current time T1 and the current time T2.
When the second starting time T3 and the second ending time T4 of the subsequent green light of the next traffic light are acquired; the speed V3 required by the vehicle to reach the intersection B at the time T3 and the speed V4 required by the vehicle to reach the intersection B at the time T4 can be obtained according to the distance CB, the current time T0, the current time T3 and the current time T4.
Based on the principle, the speeds required for the vehicle to reach the point B at times T1, T2, T3 and T4 … Tn can be calculated as V1, V2, V3 and V4 … Vn, and so on, and up to infinity, multiple sets of first speed reference values and second speed reference values can be determined.
The first speed reference values and the second speed reference values of the same group are identified by a first color, and the first speed reference values and the second speed reference values of adjacent groups are identified by a second color.
In the embodiment, the refreshing frequency of the relative relationship graph of the current speed value, the first speed reference value and the second speed reference value is 2-24 frames per second, an animation can be presented to a driver and an occupant, and the driver and the occupant can perform speed fine adjustment according to the viewed animation and the needs of the driver and the occupant.
As shown in fig. 1, the current vehicle speed V0 is presented simultaneously with V1, V2, and V3 … Vn, and when V0 is indicated in the first color (green can be used) indication area by means of a pointer, if the vehicle advances at the instant speed, the vehicle will reach the intersection B at the moment that the green light is on; conversely, when V0 indicates that the red area is marked in the second color (red may be used), it will only reach intersection B at the time the red light is on if it is moving at the instant speed. The driver and the passengers can easily make the decision of acceleration, deceleration or uniform speed so as to arrive at the green light starting time at the intersection.
As can be seen from fig. 3, 4 and 5, the graphs of the current speed value versus the first speed reference value and the second speed reference value may also be represented as a straight line graph, an arc graph or a sector graph.
An exemplary second embodiment of the present invention provides a speed adjustment prompting method during driving, and this embodiment is a preferred implementation of the method shown in the first embodiment. In this embodiment, when the distance between the vehicle and the next traffic light is smaller than the first threshold, the speed adjustment prompting method is started. The first threshold may be set to 3km, and in order to avoid excessive driver intervention when the vehicle is driving on a road section with two traffic lights far apart (such as a rural road), it is selected not to perform speed navigation in the initial stage, so that the driver can drive the vehicle autonomously. And the speed navigation is not carried out until the vehicle moves to a short distance (such as 3km) from the next traffic light intersection, and the mobile phone switches a speed navigation interface to carry out speed regulation prompt.
An exemplary third embodiment of the present invention provides a speed adjustment prompting method during driving, and this embodiment is a preferred implementation of the methods shown in the first and second embodiments. In this embodiment, the first speed reference value and the second speed reference value are both smaller than the speed limit of the road on which the vehicle is located. As shown in FIG. 6, in order to make the message more visually apparent to the occupant, the over speed portion and the too low speed portion are removed so that the graphical indication is more clearly visible to the occupant, and two adjacent groups of green zones are presented downward for selection by the driver.
When the V0 pointer points to the lower-speed green region of the two adjacent groups of green regions, the voice prompts: "please select speed to travel"; when the V0 pointer points to the highest green region in the two adjacent groups of green regions, the voice prompts: please keep running at the current speed. "
And when the current speed value is positioned between the first speed reference value and the second speed reference value of the adjacent group, prompting to increase the speed, decrease the speed or maintain the current speed based on the current speed value.
An exemplary fourth embodiment of the present invention provides a method for prompting speed adjustment during driving, and this embodiment is a preferred implementation of the methods shown in the first, second, and third embodiments.
In this embodiment, when the distance between the vehicle and the next traffic light is less than the second threshold, the speed adjustment prompting method is turned off, and the second threshold may be set to 150 m. Specifically, when the vehicle is guided to a position 150m away from the next intersection (namely, the position of the traffic light can be identified by naked eyes), the speed navigation interface is switched to a common route navigation interface, and a driver can independently and safely pass according to the actual situation of the intersection. Navigation is performed with minimal and minimal disturbance to the driver for speed. When the vehicle arrives at the traffic light intersection at last, namely, people can see the traffic light at the intersection by naked eyes, the speed navigation is not needed, and a driver can see the vehicle and the vehicle to run and safely pass through the traffic light intersection.
And when the vehicle encounters an emergency condition or emergency braking, the speed regulation prompting method is closed.
An exemplary fifth embodiment of the present invention provides a speed adjustment prompting method during driving. In this embodiment, in order to further enable the driver and the passenger to more intuitively acquire the information, the relative relationship diagram may also be presented in a single color. As shown in fig. 7, when the V0 pointer points to a red region, only the red region to which it points is presented; when the V0 pointer points to a green region, only the green region to which it points is presented. Parts larger than V0, solid shadows appear; less than the portion of V0, a null appears. And vice versa.
In the speed adjustment prompting method in the driving process shown in the first to fifth embodiments of the present invention, the speed adjustment prompting includes a voice prompt and a graphic prompt.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are also within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A speed regulation prompting method in a driving process is characterized by comprising the following steps:
acquiring a current speed value of a vehicle;
determining a plurality of groups of first speed reference values and second speed reference values according to the distance between the vehicle and the next traffic light, the current time and the starting time and the ending time of the subsequent green light of the next traffic light;
and performing speed regulation prompting based on the relative relation graph of the current speed value, the first speed reference value and the second speed reference value.
2. The method for prompting speed regulation in the driving process according to claim 1, wherein the refresh frequency of the relative relation graph of the current speed value and the first speed reference value and the second speed reference value is 2-24 frames per second.
3. The method for prompting speed regulation during driving according to claim 1, wherein the graph of the relative relationship between the current speed value and the first speed reference value and the second speed reference value can be represented by a straight line graph, an arc graph, a fan graph, a column graph or a single-color daily graph.
4. The method of claim 1, wherein the first speed reference value and the second speed reference value in the same group are identified by a first color, and the first speed reference value and the second speed reference value in an adjacent group are identified by a second color.
5. The in-driving speed adjustment prompting method according to claim 1, characterized in that the speed adjustment prompting method is started when a distance between a vehicle and a next traffic light is less than a first threshold.
6. The method for providing speed adjustment during driving of claim 1, wherein the speed adjustment is provided by a voice prompt or a graphic prompt.
7. The method for prompting speed regulation during driving of claim 1, wherein the first speed reference value and the second speed reference value are both less than the speed limit of the road on which the vehicle is located.
8. The in-driving speed adjustment prompting method according to claim 1, characterized in that the speed adjustment prompting method is turned off when the distance between the vehicle and the next traffic light is less than a second threshold.
9. The in-driving speed adjustment prompting method according to claim 1, wherein the speed adjustment prompting method is turned off when a vehicle encounters an emergency or an emergency brake.
10. The method for prompting speed regulation during driving according to claim 1, wherein when the current speed value is between the first speed reference value and the second speed reference value of the adjacent group, prompting to increase the speed, decrease the speed or maintain the current speed is performed based on the current speed value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210355462.XA CN114655205A (en) | 2022-04-06 | 2022-04-06 | Speed regulation prompting method in driving process |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210355462.XA CN114655205A (en) | 2022-04-06 | 2022-04-06 | Speed regulation prompting method in driving process |
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| CN114655205A true CN114655205A (en) | 2022-06-24 |
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| CN202210355462.XA Pending CN114655205A (en) | 2022-04-06 | 2022-04-06 | Speed regulation prompting method in driving process |
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| JP2017091322A (en) * | 2015-11-12 | 2017-05-25 | 住友電気工業株式会社 | On-vehicle device and computer program |
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| US20210221370A1 (en) * | 2017-11-10 | 2021-07-22 | C.R.F. Societa' Consortile Per Azioni | Warning and adjusting the longitudinal speed of a motor vehicle based on the recognized road traffic lights |
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2022
- 2022-04-06 CN CN202210355462.XA patent/CN114655205A/en active Pending
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| CN103116997A (en) * | 2011-11-16 | 2013-05-22 | 徐兴民 | Intelligent transportation system capable of timely prompting reference vehicle speed and in no need of waiting for red light |
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| US20210221370A1 (en) * | 2017-11-10 | 2021-07-22 | C.R.F. Societa' Consortile Per Azioni | Warning and adjusting the longitudinal speed of a motor vehicle based on the recognized road traffic lights |
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Inventor after: Yang Guichan Inventor after: Yang Jing Inventor before: Yang Jiachan Inventor before: Yang Jing |
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