Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 50
Book Description
Vehicle Classification Data Expansion
Author: Vehicle Classification Sampling Methodology Evaluation
Author: Wisconsin. Department of Transportation. Division of Planning & BudgetPublisher:
ISBN:
Category : Traffic surveys
Languages : en
Pages : 52
Book Description
Vehicle Classification Data User Demand
Author: Wisconsin. Department of Transportation. Division of PlanningPublisher:
ISBN:
Category : Choice of transportation
Languages : en
Pages : 38
Book Description
Summary and Recommendations of the Conference on FHWA Truck Travel Data
Author: Joint Participating Intermodal Surface Transportation Planning & Research Work Program
Author: Wisconsin. Department of TransportationPublisher:
ISBN:
Category : Federal aid to transportation
Languages : en
Pages : 136
Book Description
Evaluation of Methodology for Determining Truck Vehicle Miles Traveled in Illinois
Author: R. F. BenekohalPublisher:
ISBN:
Category : Traffic estimation
Languages : en
Pages : 212
Book Description
Nationwide surveys of departments of transportation, metropolitan planning organizations, and classification vendors/producers were conducted to determine the state of practice on equipment and methodologies used to determine truck vehicle miles traveled (VMT). The current Illinois Department of Transportation (IDOT) methodology was evaluated and it was found that it overestimated truck VMT for multi-unit trucks on all eight functional classes except on the minor urban arterials. The average overestimation was 11.5% and it varied from -10% to +44%. The current method overestimated truck VMT for single-unit trucks in five and underestimated in three functional classes. The under/over estimation ranged from -6% to +35%, but the average value was close to zero. To calculate truck VMT more accurately, this study proposed two different methods based on average truck percentage (ATP) and average section length (ASL). In the ATP method, truck VMT is calculated by multiplying the ATP for a group of roadway sections by the total VMT of that group. The ATP method should be used when the ATP and the total VMT by volume groups are available. In the ASL method, the total truck volume for the sampled sections is multiplied by the ASL. The ASL method should be used when the information required for ATP is not available or not reliable. Sample size influences the accuracy of truck VMT estimation and the decision on sample size must consider the error level that is acceptable. This study looked at the likely error for different sample sizes and recommended using 8% to 16% of the number of roadway sections. The sections should be distributed among the volume groups. Recently, IDOT collects vehicle classification data for three categories at about 10,000 sections, biennially. It is recommended to evaluate the truck VMT calculation using recent data.
Development of a Statewide Traffic Counting Program Based on the Highway Performance Monitoring System
Author: Mark E. HallenbeckPublisher:
ISBN:
Category : Traffic estimation
Languages : en
Pages : 452
Book Description
Journal of the Air & Waste Management Association
Author: May 1 and 2, 1974, Washington, D.C
Author: United States. Congress. Senate. Committee on Public Works. Subcommittee on Air and Water PollutionPublisher:
ISBN:
Category : Air
Languages : en
Pages : 1252
Book Description
Implementation of Transportation Controls
Author: United States. Congress. Senate. Committee on Public Works. Subcommittee on Air and Water PollutionPublisher:
ISBN:
Category : Air
Languages : en
Pages : 1252
Book Description
