01773855

Component

https://doi.org/10.1177/03611981211006422

A fundamental diagram consists of a scatter of traffic flow data sampled at a specific location and aggregated from vehicle trajectories. These trajectories, if presented equivalently, constitute a microscopic version of the (conventional) fundamental diagram. The cross-reference between vehicle trajectories and the microscopic fundamental diagram provides details of vehicle motion dynamics which allow causal-effect analysis on some traffic phenomena and further reveal the microscopic basis of the conventional fundamental diagram. This observation inspires theoretical modeling by a microscopic approach to address traffic phenomena and the conventional fundamental diagram. Derived from the field theory of traffic flow, the longitudinal control model is capable of serving the purpose without the modifications or exceptions used by other approaches.

© National Academy of Sciences: Transportation Research Board 2021.

English

pp 1195-1208

2021-9

Transportation Research Record: Journal of the Transportation Research Board

Web

References (59)

Microscopic traffic flow; Traffic data; Traffic flow theory; Vehicle trajectories

Highways; Operations and Traffic Management

TRIS, TRB, ATRI

Jun 1 2021 3:13PM