SVI 1997/058 - Occupancy rate of vehicles
Overview
Background & policy context:
The occupancy rate of cars (AOC) is used in most transport studies as an exogenous indicator and is rarely the object of investigation by itself. Transport planners mostly only have occupancy rates of passenger cars due to experience values as well as the lack of verified know-how for the determination of this important indicator in transport planning.
Targets according to SVI-tender of the research paper of 9 February 1996:
magnitudes of influence indicators and their impact on the occupancy rate;
- overview of mean values for the relevant parameters including range;
- discussion on the manipulation possibilities.
The whole research project was carried out in accordance with research contract 1997/052 'Carpooling (ICARO)'.
Objectives:
The research project investigates which variables have an influence on the occupancy rate of cars (AOC) and which measures in the domain of traffic management and offer are suitable to increase the AOC. The analysis contains qualitative (utility value analysis) and quantitative elements. It is based partially on existing evaluations of surveys in Switzerland (microcensus) which are analysed in detail. The analysis also contains evaluations of experiences/projects on carpooling abroad which were tried to transfer to Swiss conditions. Based on an evaluation of different measures, HOV (high occupancy vehicles) lanes are investigated with two standardised situations in detail. The analysis ends with recommendations to policy.
Methodology:
The following tasks were developed:
- Evaluation of the Microcensus transport survey 1994 data;
- Literature analyses as well as evaluation of related findings;
- Analysis of previous Swiss and foreign experiences made with the manipulation of the AOC;
- Derivation of planning aims for Switzerland with regard to the increase of the occupancy rate of vehicles;
- Derivation of single measures for the increase of the occupancy rate of vehicles;
- Qualitative appraisal of measures as well as value benefit analysis acorrding to weighted criteria (among others effectiveness, transport modification potentials, efficiency, feasibility);
- Extensive analysis of the 'Preference of HOVs on carpool lanes';
- Definition and transport-related appraisal according to two standardised situations.
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