Title
Connect & Drive: Design and evaluation of cooperative adaptive cruise control for congestion reduction
Author
Ploeg, J.
Serrarens, A.F.A.
Heijenk, G.J.
Publication year
2011
Abstract
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.
Subject
Mechatronics, Mechanics & Materials
IVS - Integrated Vehicle Safety
TS - Technical Sciences
Reliable Mobility Systems
Traffic
Mobility
cooperative adaptive cruise control
CACC
string stability
cooperative driving
traffic congestion
fuel efficiency
To reference this document use:
http://resolver.tudelft.nl/uuid:87088be3-f82d-4292-aa68-9dc863c7ef4f
TNO identifier
462298
Source
Journal of modern transportation, 19 (3), 207-213
Document type
article