00756115

Component

https://doi.org/10.3141/1625-15

http://scholar.google.com...lias&publication_year=1998

The new Quick Response Freight Manual (QRFM) was used to model truck traffic in Centre County, Pennsylvania, using Geographic Information System software. The QRFM methodology of truck traffic estimation follows the three-step process of trip generation, trip distribution, and traffic assignment. Trip generation was estimated by four classes of business employment and number of households and was aggregated to traffic analysis zones. Trip distribution employed a doubly constrained gravity model with travel time-based friction factors. User equilibrium was used for traffic assignment. Model calibration was performed by comparing total vehicle miles traveled from model output with observed data. A comparison is made in truck traffic estimation between two models when the model resolution is changed, that is, when the size and number of traffic analysis zones (TAZs) are changed. One model uses census tracts and the other uses census blocks and block groups as TAZs. Both models use the same network, which includes all major highways and most local roads in the urbanized region of the county. Results from the two aggregation scales of analysis were compared with each other by using traffic counts in the Roadway Management System of Pennsylvania as reference data. The estimated truck traffic link volumes favor the use of the more disaggregate TAZ scheme, which is based on blocks and block groups.

This paper appears in Transportation Research Record No. 1625, Progress in Transportation Data 1998.

English

p. 118-123

1998

Transportation Research Record

0309064708

Figures (3) ; References (7) ; Tables (4)

Calibration; Forecasting; Geographic information systems; Traffic analysis zones; Traffic assignment; Traffic models; Trip distribution; Trip generation; Trucks

Highways; Motor Carriers; Operations and Traffic Management; Planning and Forecasting; I72: Traffic and Transport Planning

TRIS, TRB, ATRI

Nov 5 1998 12:00AM

• APPLICATION OF GEOGRAPHIC INFORMATION SYSTEMS TECHNOLOGY IN FREIGHT DATA ANALYSIS: CASE STUDY OF I-90/I-94 CORRIDOR ANALYSIS
• CHOOSING A HOUSEHOLD SURVEY METHOD: RESULTS OF DALLAS-FORT WORTH PRETEST
• CONSTRUCTION OF DAYTIME ACTIVITY PROFILES FROM HOUSEHOLD TRAVEL SURVEY DATA
• DATA RECONCILIATION-BASED TRAFFIC COUNT ANALYSIS SYSTEM
• DESIGN OF AUTOMATIC COMPREHENSIVE TRAFFIC DATA MANAGEMENT SYSTEM FOR PENNSYLVANIA
• DEVELOPING DATABASE OF NATIONWIDE FREIGHT FLOWS FOR AUSTRALIA
• DEVELOPMENT OF INTELLIGENT TRANSPORTATION SYSTEM DATA MANAGEMENT
• DEVELOPMENT OF TRIP PRODUCTION RATES FOR SYNTHESIZED HOUSEHOLDS
• EXPERIMENTAL APPLICATION OF GLOBAL POSITIONING SYSTEM TO LOCATE MOTOR VEHICLE CRASHES: IMPACT ON TIME AND ACCURACY
• GEOGRAPHIC INFORMATION SYSTEM USE FOR HYDROLOGIC DATA DEVELOPMENT FOR DESIGN OF HIGHWAY DRAINAGE FACILITIES
• GEOSTATIONARY SATELLITE COVERAGE FOR SURFACE APPLICATIONS OF DIFFERENTIAL GLOBAL POSITIONING SYSTEM
• HIGHWAY FREIGHT FLOW ASSIGNMENT IN MASSACHUSETTS USING GEOGRAPHIC INFORMATION SYSTEMS
• METAANALYSIS OF TRAVEL SURVEY METHODS
• OBTAINING TRAVEL INTENSITY PROFILES FROM HOUSEHOLD TRAVEL SURVEY DATA
• PRECISION AND BIAS OF DATA FROM FILM
• RELIABILITY OF TRAFFIC DATA
• RESEARCH NEEDS FOR DETERMINING SPATIALLY RESOLVED SUBFLEET CHARACTERISTICS
• SPATIAL AND STATISTICAL ANALYSIS OF COMMERCIAL VEHICLE ACTIVITY IN METROPOLITAN ATLANTA
• SPECIFICATIONS FOR AUTOMATED LICENSE PLATE READING EQUIPMENT FOR TRANSPORTATION PLANNING
• STATISTICAL ANALYSIS OF MEAN ROUTE TRAVEL TIMES ON SEVEN PRIMARY ARTERIALS IN CHICAGO METROPOLITAN REGION
• TRAFFIC COUNT ESTIMATES FOR SHORT-TERM TRAFFIC MONITORING SITES: SIMULATION STUDY