01660947

Component

This paper proposes three control strategies for lane-changing (LC) at a merge bottleneck to mitigate voids (thus capacity-drop) and speed disturbances. The control strategies are enabled by the connected and automated vehicle (CAV) technologies, with which precise control of individual vehicles and coordinated control among vehicles would be possible. Strategy 1 is ‘gap closure’ control at the individual vehicle level (microscopic). In this strategy, an LC vehicle and its follower are controlled to close the void (extra time gap ahead) induced by the LC and prevent a backward-propagating speed disturbance. Strategy 2 is ‘gap redistribution’ control at the vehicle platoon level (mesoscopic), where extra gaps of vehicles are redistributed to periodically create large enough gaps for disturbance-free insertions. Strategy 3 is ‘LC grouping’, where a group of LC vehicles are controlled to line up along a kinematic wave to minimize the total voids. These three strategies are complementary and can be combined in different ways for different traffic conditions (moderate to near-saturated flow states) for greater benefits.

This paper was sponsored by TRB committee AHB45 Standing Committee on Traffic Flow Theory and Characteristics.

18-05824

English

5p

2018

Transportation Research Board 97th Annual Meeting

Digital/other

Figures; References

Advanced vehicle control systems; Autonomous vehicles; Bottlenecks; Car following; Connected vehicles; Freeways; Intelligent vehicles; ITS program technologies; Lane changing; Merging traffic; Mesoscopic traffic flow; Microscopic traffic flow; Mobile communication systems; Traffic platooning

Data and Information Technology; Highways; Operations and Traffic Management; Vehicles and Equipment

Transportation Research Board Annual Meeting 2018 Paper #18-05824

TRIS, TRB, ATRI

Jan 8 2018 11:30AM