A simulation study of using active traffic management strategies on congested freeways

Abstract

The main objective of this study is to evaluate the effectiveness of using active traffic management (ATM) strategies on freeways in terms of the driver's behavior and operational impacts. A few test beds were selected to evaluate the impacts of ATM such as speed harmonization, shoulder utilization, and ramp metering. Test beds used in this study were at places where an ATM is either proposed or previously implemented, i.e., where data exists for conditions prior to and after the implementation of ATM. Data collected from the test beds were used in a simulation model to evaluate the impacts of each ATM strategy on speed, travel time, and crash rates. Simulation results indicated that the implementation of speed harmonization on US 90 showed a 14% reduction in crashes and a 2%-3% increase in freeway speed; the implementation of hard shoulders on US 90 showed a 39% increase in travel time, 22% increase in freeway capacity and 60% decrease in delays; and the implementation of ramp metering on US 59 between Bissonnet St. and Fondern road showed a decrease of 23 % in freeway travel time, a 14% increase in freeway speed and 11% decrease in accident rates.

Evaluation of a Mobile Highway Management System at Roadwork Zones

“…While authors explain the calibration procedure, their own experience in demonstrating the effects of speed harmonization is strongly dependent on drivers' compliance [16] and the results cannot be compared to real-world studies (as presented in this paper). Similar results were also discussed in literature [17][18][19].…”

Simulation of hard shoulder running combined with queue warning during traffic accident with CTM model

“…HSR can significantly increase the capacity in frequently congested highway sections and reduce the duration of congestion period [6][7][8]. The effectiveness of HSR on highways has been evaluated in terms of drivers' behaviour and operational effects based on simulation using VISSIM [9,10], cell transmission model (CTM) [11], or DynusT [12]. The results showed that capacity increases, whereas travel time or delay time decreases after opening the shoulder lane.…”

Proposição e análise de um sistema de gerenciamento ativo de tráfego em um estudo de caso de uma autoestrada

“…mente, o stress dos motoristas. Avaliações dos impactos de implantação do gerenciamento ativo de tráfego podem ser encontradas em Mirshahi et al (2007), Carlson et al (2010), Geistefeldt (2012) e Vadde et al (2012).…”