01099849

Component

https://doi.org/10.3141/2047-01

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

To alleviate traffic congestion and safety concerns on the Gardiner Expressway in Toronto, Ontario, Canada, the City of Toronto has elected to implement scheduled closures for the two on-ramps since early 1970s. This study investigates the traffic impacts of the daily on-ramp closures at Gardiner Expressway and Jameson Avenue. The average changes to traffic flow variables such as traffic volume throughput due to the ramp closures are computed quantitatively. Results show that ramp closure has resulted in smoother traffic flow and higher travel speed but not higher traffic throughput on the expressway. Ramp reopening causes a spike in speed variations as measured by upstream detectors. The network performance metrics (vehicle hours traveled, vehicle kilometers traveled, delay, and travel time) are computed and analyzed to determine the performance benefits of the ramp closures. The travel time saving in the area due to the ramp closure is estimated to be 225 vehicle-hours per day.

01110656

English

pp 1-10

2008

Transportation Research Record: Journal of the Transportation Research Board

9780309113205

Print

Figures (9) ; References (9)

Freeway operations; Highway capacity; On ramps; Traffic congestion; Traffic delays; Traffic flow; Traffic speed; Traffic volume; Travel time; Vehicle miles of travel

Ramp closure; Traffic throughput

Toronto (Canada)

Highways; Operations and Traffic Management; Planning and Forecasting; I72: Traffic and Transport Planning; I73: Traffic Control

TRIS, TRB, ATRI

Jan 29 2008 2:37PM

• Assessing Return on Investment of Freeway Safety Service Patrol Programs
• Developing Microscopic Toll Plaza and Toll Road Corridor Model with PARAMICS
• Effects of Variable Speed Limits on Motorway Traffic Flow
• Estimating Time-Dependent Freeway Origin–Destination Demands with Different Data Coverage: Sensitivity Analysis
• Freeway Incidents in the United States, United Kingdom, and Attica Tollway, Greece: Characteristics, Available Capacity, and Models
• Impacts on Traffic Diversion Rates of Changed Message on Changeable Message Sign
• Methodologies for Estimating Vehicle Queue Length at Metered On-Ramps
• Overview of Traffic Signal Operation Policies for Ramp Metering
• Predicting the Impacts of Intelligent Transportation Systems on Freeway Queue Discharge Flow Variability
• Simple Approach to Estimating Changes in Toll Plaza Delays
• Two-Phase Model of Ramp Closure for Incident Management