US 12,394,306 B2
Vehicle guidance method, apparatus, and system for freeway
Ziwen Zhang, Guangdong (CN); Bingbing Ma, Guangdong (CN); Xu Wang, Guangdong (CN); Liqiang Zeng, Guangdong (CN); Su Zhou, Guangdong (CN); Dejie Deng, Guangdong (CN); and Junwen Liu, Guangdong (CN)
Assigned to Catarc Automotive Test Center (Guangzhou) Co., Ltd, Guangzhou (CN)
Filed by Catarc Automotive Test Center (Guangzhou) Co., Ltd, Guangdong (CN)
Filed on Nov. 22, 2022, as Appl. No. 18/057,764.
Claims priority of application No. 202210364633.5 (CN), filed on Apr. 8, 2022.
Prior Publication US 2023/0326334 A1, Oct. 12, 2023
Int. Cl. G08G 1/052 (2006.01); G08G 1/01 (2006.01); G08G 1/0962 (2006.01)
CPC G08G 1/052 (2013.01) [G08G 1/0141 (2013.01); G08G 1/0145 (2013.01); G08G 1/0962 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A vehicle guidance method for a freeway, comprising:
responsive to a detection that a driving speed of a vehicle in a monitored road section is less than a preset proportion of an average driving speed of vehicles in the monitored road section, determining the vehicle that the driving speed thereof is less than the preset proportion of the average driving speed as an abnormal vehicle, and determining a lane in which the abnormal vehicle is located as an abnormal lane;
determining, according to an average driving speed and a traffic density of each lane in the monitored road section, whether there is a congestion risk;
responsive to a determination that there is the congestion risk, obtaining, according to the traffic density of each lane, a respective guidance scheme of each vehicle in each lane within a preset distance behind the abnormal vehicle; and
sending the respective guidance scheme to each vehicle within the preset distance, such that non-abnormal vehicles in the abnormal lane within the preset distance behind the abnormal vehicle change the lane thereof to an adjacent lane of the abnormal lane, and vehicles in each non-abnormal lane drive according to the respective guidance schemes, thus enabling a traffic density of each non-abnormal lane in the monitored road section to meet a preset requirement;
wherein the determining, according to an average driving speed and a traffic density of each lane in the monitored road section, whether there is a congestion risk is specifically:
obtaining, by using the traffic density of each lane in the monitored road section, an average driving spacing of the adjacent lane after the non-abnormal vehicles in the abnormal lane change the lane thereof to the adjacent lane;
comparing and estimating the average driving spacing, changed after the non-abnormal vehicles in the abnormal lane change the lane thereof to the adjacent lane, and a safe driving spacing of the monitored road section; and
if the average driving spacing is less than or equal to the safe driving spacing, determining that there is a congestion risk in the monitored road section;
otherwise, determining that there is no congestion risk in the monitored road section.