01660314

Component

Understanding the string stability of connected and automated (CA) vehicles is important for evaluating dynamics of regular-CA mixed vehicular flow. While previous studies proposed CA car-following models and analyzed the stability of the model itself, they do not focus on the stability of the regular-CA mixed flow. Additionally, stability analysis methods for traditional car-truck mixed flow cannot directly be applied into CA traffic systems, where the CA vehicle monitors multiple preceding vehicles with communication delay. This study presents a framework that analytically derives the generalized string stability criterion of regular-CA platoons. Moreover, an example is conducted to validate the availability of this analytical framework by using concrete car-following models. Simulation based approaches are also utilized for fully capturing car-following dynamics of vehicular flow. This contribution is helpful for guiding analytical investigation of string stability of regular-CA mixed vehicular flow, thereby giving suggestions for CA vehicle feedback design for obtaining optimal stability situation.

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

18-04902

English

7p

2018

Transportation Research Board 97th Annual Meeting

Digital/other

References

Connected vehicles; Intelligent transportation systems; Intelligent vehicles; Stability analysis; Traffic platooning; Vehicle mix

Highways; Operations and Traffic Management; Vehicles and Equipment

Transportation Research Board Annual Meeting 2018 Paper #18-04902

TRIS, TRB, ATRI

Jan 8 2018 11:13AM