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9 report(s) found for Joseph Perrin Jr.
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This paper reports on a two-year study evaluating HOV lane performance. The analysis assesses the freeway operations before the HOV lanes opened with continued assessment throughout the first year of operation. It looks at automatic data from traffic monitoring stations and manual data from roadside...

 

Sophisticated microsimulation models, such as MITSIM, INTEGRATION and WATSIM are useful tools to test the potential impact of new ITS technologies, such as route diversion variable message signs, in-vehicle drive alarms, and weather sensitive speed advisory signs. Once implemented, the modeling should...

 
Adaptive Signal Control II (Jan 2003, MPC-03-141)

Increasing traffic congestion is a constant source of frustration, time loss, and expense to users and managers of transportation systems. Cities, counties, and state transportation agencies are persistently searching for ways to mitigate urban traffic congestion, while minimizing costs and maintenance...

 

This research focuses on real-time congestion monitoring, a unique direction, as most other cities focus solely on freeway operations as they are easier to monitor. Once surface street congestion is monitored successfully, recurring problematic locations can be identified, and solutions can be developed...

 

This research examines a range of incident detection technologies to determine a recommended combination of approaches for use in the Utah Department of Transportation (UDOT) Advanced Traffic Management System (ATMS). The technologies that were examined are computer-based Automatic Incident Detection...

 
Inclement Weather Signal Timings (Jul 2000, MPC-01-120)

This study examines signal timing in inclement weather conditions. With the completion of the Utah DOT's Advanced Traffic Management System (ATMS), UDOT will have the capability to change signal timing plans from a central location by communicating with each controller through fiber optic technology....

 
Accident Data Availabilty (Jun 2000, MPC-01-118)

This project investigates alternate forms of dissemination for the accident information. Costs, capabilities, and compatibility are reviewed for integration of the accident database with a GIS format to allow a graphical and spatial interface. The issues being addressed by this research focus on information...

 

This research document represents the analysis and recommendations of the University of Utah Traffic Laboratory (UTL) on the following Road Weather Information System (RWIS) topics: (1) public dissemination of RWIS station information and (2) the area of influence of available RWIS equipment.

 

This study compares the performance of left-turn phasing to provide quantifiable benefits of one phasing over another. From the analysis, guidelines are developed for determining the type of left-turn phasing based on left-turn volume, opposing through volume and lane geometry.

 
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