Operational Comparison of Transit Signal Priority Strategies
Priority strategies for bus transit are implemented with the purpose of expediting transit flow by reducing travel times and delay while providing a more reliable system that may attract new riders and...
View ArticleTransit Signal Priority with Connected Vehicle Technology
Transit Signal Priority (TSP) has been studied as a control strategy that offers preferences to transit vehicles at signalized intersections. While TSP has been deployed in many places, several...
View ArticlePerformance Evaluation of Combined Vehicle Route Guidance and Traffic Signal...
This study evaluated the performance of combined vehicle route guidance and traffic signal control schemes using traffic simulation. Simulation models are developed for three networks. Three traffic...
View ArticleModifying Progression Adjustment Factor and Upstream Filtering Adjustment...
In the Highway Capacity Manual (HCM) there are two factors accounting for the platooning in vehicle arrivals and filtering effect caused by the upstream signals, namely the progression adjustment...
View ArticleA Dynamic Signal Priority Control Strategy to Mitigate the Off-ramp Queue...
Congestion at the downstream of a freeway off-ramp often propagates the traffic queue to the mainline, and thus reduces the freeway capacity at the interchange area. To prevent such queue spillback,...
View ArticleThe Effect of Adaptive Green Duration Control on the Macroscopic Fundamental...
Recent work has shown that an innate instability exists on urban traffic networks that causes congestion to tend toward inhomogeneous spatial distributions. This can lead to less consistent and...
View ArticleClosed-Loop Optimal Freeway Ramp Metering Using Continuous State Space...
In recent years, Reinforcement Learning (RL), an Artificial Intelligence based learning method, has gained some interest among researchers in solving control systems problems. Although RL methods have...
View ArticleA Model for Transit Signal Priority Considering Stochastic Bus Arrival Time
Transit Signal Priority (TSP) strategy is an effective preferential treatment to move transit vehicles through an intersection with minimum delay. However, TSP can become a disturbance to traffic on...
View ArticleEnergy Consumption Reduction Strategies for Plug-in Hybrid Electric Vehicles...
Automobile manufacturers have introduced plug-in hybrid electric vehicles (PHEVs) to reduce fossil fuel consumption. This paper details optimization strategies that can be utilized to minimize energy...
View ArticleA Sorting Model of Optimisation Order in Traffic Signal Planning
When optimizing the signal timings of a network, a noticeable issue is to determine the intersections’ optimization orders. It is the list of order that all intersections will be optimized in sequence....
View ArticleProbabilistic Evaluation of Traffic Randomness Effects on Intergreen Time...
Conventional methods of intergreen time design are based on deterministic traffic flow theory and are thus difficult to fully account for traffic randomness especially driver’s decision error. The...
View ArticleThree- or Four-Section Displays for Permissive Left-Turns? Some Evidence from...
Many jurisdictions are using the flashing yellow arrow (FYA) to control protected/permissive left turns (PPLTs). For cost and other reasons, some jurisdictions have or are considering implementing FYA...
View ArticleSafety Impacts of Signalized Lane Merge Control at Highway Work Zones
Lane closures due to highway work zones present many challenges to the goal of ensuring smooth traffic operations and a safe environment for drivers and workers. Late merge behavior at the work zone...
View ArticleApplication of Finite Mixture of Regression Model with Varying Mixing...
Travel time along an urban arterial is greatly affected by traffic signals. Most studies on urban travel time employ statistical models to directly obtain the distribution without incorporating the...
View ArticleOptimization-Based Queue Estimation on an Arterial Traffic Link with...
Advanced monitoring and control of arterial road traffic network operations requires accurate knowledge of current and predicted performance measures on the network. Recently studied signal control...
View ArticleSafety Performance of Split Versus Lead-Lag Traffic Signals in Abu Dhabi
In Abu Dhabi City, United Arab Emirates, the traffic signals of a total of 38 signalized intersections have been modified. The old design was a split phasing system for all intersections’ approaches...
View ArticleHigh-Resolution Event-Based Data at Diamond Interchanges: Performance...
Signalized diamond interchanges are unique pairs of intersections characterized by interlocked left turns and relatively close spacing between ramps. A diamond interchange has four external entry...
View ArticleGraphical Performance Measures for Practitioners to Triage Split Failure...
Detector occupancy is commonly used to measure traffic signal performance. Despite improvements in controller computational power, there have been relatively few innovations in occupancy-based...
View ArticleDesigning Traffic Signal Yellow and Change Intervals Considering Truck Impacts
The research presented in this paper quantifies the effect of heavy vehicles on the design of yellow and all-red intervals. Using empirical data from previous studies and truck performance...
View ArticleImproving Intersection Behavior through Delay-Based Left-Turn Phase Initiation
Serving protected left turn phases for one or two vehicles can often be an inefficient use of cycle green time when the opposing through movements are over capacity. This paper assesses the performance...
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