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20815 Connect & Drive: design and evaluation of cooperative adaptive cruise control for congestion reduction
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Ploeg, J. and Serrarens, A.F.A. and Heijenk, G.J. (2011) Connect & Drive: design and evaluation of cooperative adaptive cruise control for congestion reduction. Journal of Modern Transportation, 19 (3). pp. 207-213. ISSN 2095-087X

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Road throughput can be increased by driving at small inter-vehicle time gaps. The amplification of velocity disturbances in upstream direction, however, poses limitations to the minimum feasible time gap. This effect is covered by the notion of string stability. String-stable behavior is thus considered an essential requirement for the design of automatic distance control systems, which are needed to allow for safe driving at time gaps well below 1 s. Using wireless inter-vehicle communications to provide real-time information of the preceding vehicle, in addition to the information obtained by common Adaptive Cruise Control (ACC) sensors, appears to significantly decrease the feasible time gap, which is shown by practical experiments with a test fleet consisting of six passenger vehicles. The large-scale deployment of this system, known as Cooperative ACC (CACC), however, poses challenges with respect to the reliability of the wireless communication system. A solution for this scalability problem can be found in decreasing the transmission power and/or beaconing rate, or adapting the communications protocol. Although the main CACC objective is to increase road throughput, the first commercial application of CACC is foreseen to be in truck platooning, since short distance following is expected to yield significant fuel savings in this case.

Item Type:Article
Research Group:EWI-DACS: Design and Analysis of Communication Systems
Research Program:CTIT-WiSe: Wireless and Sensor Systems
Research Project:Connect and Drive: Cooperative Adaptive Cruise control based on WiFi communication between vehicles and infrastructure
Uncontrolled Keywords:cooperative adaptive cruise control (CACC); string stability; cooperative driving; traffic congestion; fuel
ID Code:20815
Deposited On:28 November 2011
More Information:statisticsmetis

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