01099225

Component

https://doi.org/10.3141/2080-12

http://scholar.google.com...mire&publication_year=2008

The use of video imaging vehicle detection systems (VIVDSs) in Texas has increased dramatically, primarily as a result of safety issues and costs. Nonintrusive detectors are almost always safer to install at intersections than inductive loops because of the greater separation between passing motorists and the field crews installing the detectors. Other factors that have contributed to increased VIVDS usage include the flexibility in adjusting detection zones (e.g., with lane reassignments), the ability to send an image of the traffic stream to a traffic operations center, and the lack of damage to the pavement structure (unlike inductive loops, which require a saw-cutting process that weakens the pavement). Despite these advantages, VIVDSs require additional research in some situations to ensure safe operations. The research objective is to determine how well the current video imaging systems deployed by the Texas Department of Transportation provide dilemma zone protection at high-speed signalized intersections. Preliminary findings from data collected at one of the three planned sites indicate that the detection discrepancies between VIVDSs and in-pavement sensors are significantly different. These discrepancies are not always critical to safety but would increase intersection delay.

01118470

English

pp 100-110

2008

Transportation Research Record: Journal of the Transportation Research Board

9780309125932

Print

Figures (6) ; References (18) ; Tables (2)

Dilemma zone; Highway operations; Signalized intersections; Traffic delays; Traffic safety; Video imaging detectors

High speed intersections

Texas

Highways; Operations and Traffic Management; I73: Traffic Control

TRIS, TRB, ATRI

Jan 29 2008 5:03PM

• Analysis of Stopping Behavior at Urban Signalized Intersections: Empirical Study in South Korea
• Characteristics of High-Resolution Queue Discharge and the Effect on Signal Timing
• Effectiveness of Lead–Lag Phasing on Progression Bandwidth
• Evaluation of Variable Maximum Green Time to Improve Rural Traffic Signal Operations
• Improved Highway–Railway Interface for the Preempt Trap
• Integration of Real-Time Pedestrian Performance Measures into Existing Infrastructure of Traffic Signal System
• Microscopic Simulation Model of Traffic Operations at Intersections in Malfunction Flash Mode
• Piecewise Optimum Delay Estimation for Improved Signal Control
• Quantitative Evaluation of Fully Actuated Versus Nonactuated Coordinated Phases
• Robust Synchronization of Actuated Signals on Arterials
• Split-Cycle Offset Optimization Technique and Coordinated Actuated Traffic Control Evaluated Through Microsimulation
• Traffic Controller Performance During Time-of-Day Transition at Coordinated Actuated Signal Systems