Details:
-
Creators:
-
Corporate Creators:
-
Corporate Contributors:
-
Subject/TRT Terms:
-
Publication/ Report Number:
-
Resource Type:
-
Geographical Coverage:
-
Corporate Publisher:
-
Abstract:This study attempted to estimate the effect of additional vehicles joining the traffic stream when it is near
capacity. The study used data from highways I-35, I-45 in Texas and I-80 in California aggregated at different time
intervals. Various macroscopic traffic flow models, Catastrophe model and the bottleneck model were studied in
order to identify models that best represent the speed-flow relation for the traffic data over complete range of flow.
The Catastrophe model and the bottleneck model did not fit the data well, while three macroscopic models,
the Modified HCM, Newell-Franklin and Van Aerde model were found to fit the data well. Using congestion
pricing theory the optimum toll rates were calculated for each of these three models. The optimum toll rates were
then compared with the toll rates on some of the existing variably priced toll roads the US. The optimum toll rates
estimated using Modified HCM, Newell-Franklin and Van Aerde model were $0.65, $0.81 and $0.97 per mile
assuming the value of travel time savings as $20/hr for the near capacity flow. These toll rates were found to be
lower when compared with the maximum toll rates on three of the existing variable toll facilities which charge
about $1/mile during the hours of extreme congestion.
-
Format:
-
Funding:
-
Collection(s):
-
Main Document Checksum:
-
File Type:
Supporting Files
-
No Additional Files
More +