Analysing Heavy Vehicles Trip Chains - Potential for Energy Savings?
O Kveiborg, DTU Transport, DK
The paper adresses empty trips. It will report a research approach to investigate trip chain patterns to identify potential wasteful empty trips and identify the types of vehicles and tyeps of goods that are more likely to have empty trips.
The paper adresses empty trips. It will report a research approach to investigate trip chain patterns to identify potential wasteful empty trips and identify the types of vehicles and tyeps of goods that are more likely to have empty trips. The analysis will be used to focus on possible ways of reducing these empty trip.
The analysis will be based on the national trip diaries that are filled out for approximately 1200 vehicles every year and covering all trips undertaken during one week of operation. The individual diaries will be used to describe the different trip chains undertaken by the vehicles. The analysis will identify whether the trip chain patterns are the same within vehicle typ and/or type of commodity.
In relation to this analysis a specific focus will be on the empty trips. The paper will discuss whether there are certain patterns of empty trips that can identified and possibly be reduced.
This detailed trip chain approach is unparallelled in other studies. The analysis is in its beginning and the paper will report initial finding and outline what areas that will be interesting to investigate further.
One area where the findings can be used is in freight transport demand modelling. In particular it is intended to use it in strategic modelling. The model approach will be in line with the approach by Holguin-Veras et al. (2003), but the investigation will contain more information as the specific trip chains are used for the analysis and modelling.
The paper will adress and outline how this modelling can be undertaken, but the actual model will not be developed and/or estimated.
Association for European Transport