Abstract #301529

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JSM 2003 Abstract #301529
Activity Number: 12
Type: Topic Contributed
Date/Time: Sunday, August 3, 2003 : 2:00 PM to 3:50 PM
Sponsor: Section on Survey Research Methods
Abstract - #301529
Title: Research Issues in Swedish Road Traffic Surveys
Author(s): Gosta Forsman*+ and Stig Danielsson and Annica Isaksson
Companies: Linkoping University and Linkoping University and Linkoping University
Address: Dept. of Math, S-58183 Linkoping, , Sweden
Keywords: road traffic surveys ; multistage sampling ; nonsampling error
Abstract:

The Swedish National Road Administration (SNRA) administrates the construction and maintenance of Swedish state roads. In addition, the SNRA has an overall responsibility for road traffic safety in Sweden. These tasks are supported by a system of "road traffic surveys" by which we mean here surveys based on data collection from pre-selected sites on the roads. The data collection is conducted by observers or by using equipment such as traffic analyzers and pneumatic tubes. One part of the system is the so-called Traffic Measurement System which includes the surveys of Annual average daily traffic (AADT) and Change of total vehicle mileage. Another part of the system is directly connected to road traffic safety and includes surveys of vehicle speed, seat belt use, and bicycle helmet use, for example. The surveys of traffic safety are based on a master sample of roads, designed for a broad use of traffic surveys. We present the SNRA traffic surveys and discuss research activities including sampling and estimation issues, non-sampling errors and the use of model-based inference from these surveys.

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