TY  - JOUR
PY  - 2018//
TI  - Modeling the impacts of speed limits on uncertain road networks
JO  - Transportmetrica A: transport science
A1  - Xu, Xiangdong
A1  - Chen, Anthony
A1  - Lo, Hong K.
A1  - Yang, Chao
SP  - 66
EP  - 88
VL  - 14
IS  - 1-2
N2  - In this paper, we examine the network-wide impacts of speed limits on network uncertainty. A multi-dimensional modeling approach is proposed to investigate the impacts of speed limits on link travel time uncertainty profile, travelers' risk-averse route choice decisions, and network flow reallocation under uncertainty. <br><br>METHODologically, a truncated travel time probability distribution is proposed and its moments are derived to characterize the impact of speed limit on link travel time uncertainty profile. The mean-excess travel time is then adopted as a risk measure to account for travelers' risk-averse route choice adjustment and network flow reallocation induced by speed limits. We find that a speed limit scheme has different impacts on various dimensions of travel time uncertainty. The shift in travel time uncertainty profile of the directly affected links adjusts the traveler's risk-averse route choice decisions, the travel time uncertainty profile of the indirectly affected links, and consequently the network flow reallocation.<p />  <p>Language: en</p>
LA  - en
SN  - 2324-9935
UR  - http://dx.doi.org/10.1080/23249935.2017.1317879
ID  - ref1
ER  -