A Constant Spacing Policy for Heavy-Duty VehiclePlatoon Disaggregation at Highway Off-Ramp
(English)Manuscript (preprint) (Other academic)
Platooning heavy-duty vehicles (HDVs) on highways using cooperative adaptive cruise control (CACC) can significantly reduce fuel consumption and improve traffic throughput.HDVs operating with small inter-vehicle distances reduce aerodynamic resistance considerably. However, HDV platoons can also have negative impacts on traffic flow when they hinder lane changing at highway off-ramps. This study investigates whether disaggregation of HDV platoons benefits traffic flow at highway off-ramps. A modified constant spacing policy is applied forHDV platoon disaggregation. The feasible region of the CACCparameters is derived based on an analysis of asymptotic stability, driving safety, and HDV acceleration and braking capabilities.The proposed HDV platoon disaggregation strategy at highway off-ramps is implemented and simulated in a microscopic traffic simulation package. According to the simulation outcomes, a disaggregation of HDV platoons at off-ramps leads to significant average speed improvements at high traffic flow rates.
Engineering and Technology
Research subject Transport Science
IdentifiersURN: urn:nbn:se:kth:diva-181931OAI: oai:DiVA.org:kth-181931DiVA: diva2:901965
QS 20162016-02-092016-02-092016-02-10Bibliographically approved