01629162

Component

Shockwave analysis is crucial for a variety of tasks in traffic engineering. There are some deficiencies with available shockwave analysis results. Firstly, simple cases were mostly considered with qualitative shockwave analyses. Secondly, field data is generally scarce for evaluating shockwave dynamics. Also, the ad hoc availability of field data limits the possibility of systematic and thorough examination of shockwave formation and propagation in genuine situations. Thirdly, although ramp metering is an important means applied to prevent congestions on freeways, available studies on ramp metering was rarely accompanied with shockwave analysis. This paper conducts qualitative shockwave analyses and quantitative evaluation with respect to a typical traffic scenario on freeways. The evaluation results obtained via macroscopic traffic flow simulations and field data testing were found to match the qualitative results of shockwave analyses quite well.

This paper was sponsored by TRB committee AHB20 Standing Committee on Freeway Operations.

01618707

17-03340

English

26p

2017

Transportation Research Board 96th Annual Meeting

Digital/other

Figures; References

Bottlenecks; Macroscopic traffic flow; Ramp metering; Traffic congestion; Traffic flow rate; Traffic models; Traffic simulation

Lighthill-Whitham-Richards traffic flow model

Fundamental diagram

Highways; Operations and Traffic Management

Transportation Research Board Annual Meeting 2017 Paper #17-03340

TRIS, TRB, ATRI

Dec 8 2016 11:15AM