01054054

Component

The emphasis of this research is on the analysis of commercial vehicle tours. Tours are disaggregated by their routing constraints. The generation of Vehicle Kilometers Traveled (VKT) by tour type is analytically modeled and analyzed. The relative influence of the number of stops per tour, tour duration, and time window constraints on VKT is discussed using an analytical framework. Multistop tours are proven to generate more VKT than direct deliveries even for equal payloads. Intuition about the impacts of network changes and policy implications on VKT is derived. Implications for the calibration of trip generation and distribution models are discussed. It is proved that the percentage of empty trips has no correlation with the efficiency of the tours regarding VKT generation. The shape of Trip Length Distributions (TLD) is discussed. It is shown that the average trip length and the TLD shape are strongly dependent on the tour type, distance from the depot/distribution center to the service area, density of stops, and number of stops per tour. Implications for data collection needs are analyzed. Data and indicators that are needed to estimate and forecast truck VKT are proposed.

01042056

07-0835

English

27p

2007

Transportation Research Board 86th Annual Meeting

CD-ROM

Figures (1) ; References (24) ; Tables (2)

Commercial vehicle operations; Commercial vehicles; Data collection; Distance; Freight traffic; Freight transportation; Stopping; Trip distribution; Trip generation; Trip length; Truck traffic; Urban areas; Vehicle miles of travel

Empty trips; Truck trips

Freight Transportation; Highways; Society; I10: Economics and Administration

Transportation Research Board Annual Meeting 2007 Paper #07-0835

TRIS, TRB

Feb 8 2007 5:25PM