Variable speed limits: safety and operational impacts of a candidate control strategy for an urban freeway. - Peter Allaby; Bruce Hellinga; Mara Bullock (ITSC, 2006)

Variable Speed Limits: Safety and Operational Impacts of a Candidate Control Strategy for Freeway Applications. - Peter Allaby; Bruce Hellinga; Mara Bullock (IEEE Trans. Intell. Transp. Syst., 2007)