00727199

Component

https://doi.org/10.1177/0361198196152200107

https://scholar.google.co...Maze&publication_year=1996

An alternate approach for truck transportation planning at the state level is presented using a case study application in the State of Iowa. The method was based on some freight modeling concepts and available freight data sets. However, the model takes advantage of two concepts: unconstrained highway capacities and the decomposition of commodities, resulting in manageable data and modeling requirements. Identification of significant economic sectors, selection of appropriate productivity measures, estimation of truck freight volumes for each sector individually, and estimation of routing of truck traffic on major highway routes are major elements of the planning method. The case study used two industrial sectors--food and kindred products, and machinery products--which accounted for the largest portion of state employment in nonservice sectors and the largest truck traffic generated in the state. A simplistic transportation network was used to demonstrate the modeling procedure. The analysis uses county-level employment and population to estimate zonal freight tonnage. The truck share of generated freight was estimated as the total freight generated less the freight tonnage shipped by rail. A gravity model was used to distribute the truck tonnage among origin-destination pairs, using travel time as the impedance on highway links. Estimated truck flows were converted to vehicle trips on least time highway routes using typical vehicle equivalent weights.

This paper appears in Transportation Research Record No. 1522, Freight Transportation Data and Planning Issues, Trucking, and Marine Transportation.

English

Shafran, I

p. 55-63

1996

Transportation Research Record

0309062195

Figures (5) ; References (11) ; Tables (2)

Case studies; Demand; Freight transportation; Gravity models; Methodology; Origin and destination; Travel time; Trucking

Iowa

Freight Transportation; Highways; Motor Carriers; Planning and Forecasting; I72: Traffic and Transport Planning

TRIS, TRB

Oct 3 1996 12:00AM

• APPLICATIONS OF ECONOMIC VALUE OF FREIGHT FLOWS TO TRANSPORT PLANNING
• BENEFITS OF ELECTRONIC CLEARANCE FOR ENFORCEMENT OF MOTOR CARRIER REGULATIONS
• COLLECTING USAGE DATA FOR ANALYZING A HEAVY-VEHICLE, DIVISIBLE-LOAD PERMIT SYSTEM
• COMPUTERIZED HEAVY-VEHICLE SIZE AND WEIGHT REGULATIONS DATA BASE
• INCORPORATING ENERGY CRITERIA IN INTERMODAL TRANSPORTATION POLICY DECISIONS
• INNOVATIVE APPROACHES TO REGIONAL FREIGHT TRANSPORTATION PLANNING: CASE STUDY OF MONTEREY BAY REGION (WITH DISCUSSION)
• INVESTMENT SELECTION MODEL FOR MULTICOMMODITY MULTIMODAL TRANSPORTATION NETWORKS
• MOBILE DATA COMMUNICATION AND ELECTRONIC DATA INTERCHANGE TECHNOLOGY IN EUROPEAN ROAD FREIGHT OPERATIONS: EVALUATION OF PILOT APPLICATIONS
• OHIO MOTOR-CARRIER PREFERENCES FOR INTELLIGENT TRANSPORTATION SYSTEMS/COMMERCIAL VEHICLE OPERATIONS INNOVATIONS
• RESOLUTION OF LAND USE AND PORT ACCESS CONFLICTS AT INLAND WATERWAY PORTS
• STATE OF THE PRACTICE OF INFORMATION TECHNOLOGY AT MARINE CONTAINER PORTS
• STRATEGIC PLANNING MODEL FOR MARINE OIL TRANSPORTATION IN THE GULF OF MEXICO
• STREAM-OF-TRAFFIC INTERVIEW TRUCK SURVEY: METHODOLOGY AND RECOMMENDATIONS ON TRAFFIC VOLUME THRESHOLDS
• TECHNOLOGICAL ADVANCEMENTS IN HAZARDOUS MATERIALS EVACUATION PLANNING
• TRAFFIC ANALYSIS OF CHICAGO RIVER AND LOCK
• USING SEASONAL AND DAY-OF-WEEK FACTORING TO IMPROVE ESTIMATES OF TRUCK VEHICLE MILES TRAVELED