00819927

Component

https://doi.org/10.3141/1748-12

http://scholar.google.com...+Jia&publication_year=2001

Performance Measurement System (PeMS) is a freeway performance measurement system for all of California. It processes 2GB/day of 30-s loop detector data in real time to produce useful information. At any time managers can have a uniform, comprehensive assessment of freeway performance. Traffic engineers can base their operational decisions on knowledge of the current status of the freeway network. Planners can determine whether congestion bottlenecks can be alleviated by improving operations or by minor capital improvements. Travelers can obtain the current shortest route and travel time estimates. Researchers can validate their theory and calibrate simulation models. PeMS, which has been in stable operation for 18 months, is a low-cost system. It uses the California Department of Transportation (Caltrans) network for data acquisition and is easy to deploy and maintain. It takes under 6 weeks to bring a Caltrans district online, and functionality can be added incrementally. PeMS applications are accessed over the World Wide Web; custom applications can work directly with the PeMS database. Built as a prototype, PeMS can be transitioned into a 7 x 24 production system. The PeMS architecture and use are described.

This paper appears in Transportation Research Record No. 1748, Advanced Traffic Management Systems and Vehicle-Highway Automation 2001.

English

p. 96-102

2001

Transportation Research Record

0309072077

Figures (7)

Applications; Computer architecture; Data mining; Freeways; Loop detectors; Measurement; Performance; Performance measurement; Real time data processing; Research; Traffic engineering; Transportation planning; Traveler information and communication systems

California

Highways; Operations and Traffic Management; Research; I73: Traffic Control

TRIS, TRB, ATRI

Nov 2 2001 12:00AM

• ASSESSMENT OF STOCHASTIC SIGNAL OPTIMIZATION METHOD USING MICROSIMULATION
• BREAKDOWN-RELATED CAPACITY FOR FREEWAY WITH RAMP METERING
• COMPARATIVE ANALYSIS OF OPERATIONAL ALGORITHMS FOR COORDINATED RAMP METERING
• COMPARISON OF TRANSIMS AND CORSIM TRAFFIC SIGNAL SIMULATION MODULES
• CONFIGURATION MANAGEMENT IN TRANSPORTATION MANAGEMENT SYSTEMS: EVALUATION OF NEED
• FREEWAY CRASH TIMELINE CHARACTERISTICS AND USES
• METHOD FOR REAL-TIME RECOGNITION OF VEHICLE PLATOONS
• MODELING EFFECTS OF DRIVER CONTROL ASSISTANCE SYSTEMS ON TRAFFIC
• MODIFYING SIGNAL TIMING DURING INCLEMENT WEATHER
• MONITORING URBAN FREEWAY INCIDENTS BY WIRELESS COMMUNICATIONS
• MULTISTAGE STOCHASTIC SYSTEM OPTIMUM DYNAMIC TRAFFIC ASSIGNMENT PROGRAM WITH RECOURSE FOR INCIDENT TRAFFIC MANAGEMENT
• ONLINE TURNING PROPORTION ESTIMATION IN REAL-TIME TRAFFIC-ADAPTIVE SIGNAL CONTROL
• OPTIMAL COORDINATED RAMP METERING WITH ADVANCED MOTORWAY OPTIMAL CONTROL
• PEDESTRIAN TIMING ALTERNATIVES AND IMPACTS ON COORDINATED SIGNAL SYSTEMS UNDER SPLIT-PHASING OPERATIONS
• REAL-TIME OFFSET TRANSITIONING ALGORITHM FOR COORDINATING TRAFFIC SIGNALS
• STAKEHOLDER REQUIREMENTS FOR TRAFFIC SIGNAL PREEMPTION AND PRIORITY IN WASHINGTON, D.C., REGION
• TEXAS DRIVER UNDERSTANDING OF ABBREVIATIONS FOR CHANGEABLE MESSAGE SIGNS
• TRANSITION STRATEGIES TO EXIT PREEMPTION CONTROL: STATE-OF-THE-PRACTICE ASSESSMENT
• TRICEPS-CARTESIUS: ADVANCED TRANSPORTATION MANAGEMENT SYSTEM TEST BED FOR EVALUATION OF INTERJURISDICTIONAL TRAFFIC MANAGEMENT STRATEGIES
• VISION-BASED STOP SIGN DETECTION AND RECOGNITION SYSTEM FOR INTELLIGENT VEHICLES