01595108

Component

The urban Macroscopic Fundamental Diagram (MFD) is generally used for evaluating and controlling different traffic characteristics in an urban network. The MFD finds its extensive application in the development of algorithms that can improve traffic conditions. Similar to congestion, safety is an important externality of traffic. However, there is a limited set of knowledge when it comes to understanding the relationship between MFD and safety. Previous studies show that traffic flow and speed significantly influence the traffic safety. The theory and relationship between safety and MFD will provide insight into analysing the correlation between crashes and traffic flow and develop dynamic control measures to improve safety. This is achieved via the assessment of influence areas making use of conflict analysis technique. The results obtained from this analysis are initially identified via the observation of the simulated traffic patterns and later from another test using Surrogate Safety Assessment Model (SSAM) conflict analysis software. The results show some of well defined relationships. This model will enable policy makers and traffic planners in understanding the real-time correlation between traffic characteristics and safety from a macroscopic viewpoint.

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

01584066

16-4987

English

11p

2016

Transportation Research Board 95th Annual Meeting

Digital/other

Figures; Maps; References; Tables

Highway safety; Policy making; Traffic congestion; Traffic flow; Transportation planning; Urban areas

Highways; Operations and Traffic Management

Transportation Research Board Annual Meeting 2016 Paper #16-4987

TRIS, TRB, ATRI

Jan 12 2016 6:10PM