@article{ref1,
title="Stability in drivers' speed choice",
journal="Transportation research part F: traffic psychology and behaviour",
year="2002",
author="Haglund, Mats and Åberg, Lars",
volume="5",
number="3",
pages="177-188",
abstract="Repeated speed measurements were obtained to examine drivers' consistency in speed choice. Drivers were observed at two locations along a route or for two days at the same location. Single carriageway roads were used with posted speed limits of 70 and 90 km/h. Correlation coefficients between repeated speed measures ranged from .49 to .81 for free-flowing vehicles. Higher consistency between measures was found where segments of the road were homogenous. Consistency in relation to speed limit varied as a function of roads and direction of travel. From 4% to 41% of the drivers observed legal speeds at both sites and between 43% and 100% travelled over the speed limits at both sites. The results are discussed in terms of using self-reported speed in driver surveys and modelling of driver behaviour.<p />",
language="en",
issn="1369-8478",
doi="10.1016/S1369-8478(02)00016-5",
url="http://dx.doi.org/10.1016/S1369-8478(02)00016-5"
}