An air quality evaluation system that utilises existing data has been modelled on the UK’s motorways and tested in Manchester as Peter Kirby and Paul Grayston describe. It has long been known that emissions from road transport are the principal source of NO2 pollution, especially in the urban environment, and that appropriate transport management can play a big role in meeting environment and public health objectives.
A study of the impact of travel time information on driver behaviour has come to some interesting conclusions, as Dean Deeter of Athey Creek Consultants explains. For some time road operators have been using dynamic message signs (DMS) to keep drivers informed of current road conditions. While it is known that drivers welcome the additional information, little has been known about the effect this information has on driver behaviour - until now that is. A survey undertaken by ENTERPRISE (Evaluating New TEch
Colin Sowman finds out why California is still expanding its already comprehensive weigh-in-motion (WIM) system.
California has the most complete weigh-in-motion (WIM) system in the United States and recently announced a US$1.6 million contract for another Commercial Vehicle Enforcement Facility (usually called a weigh station) near Mountain Pass. According to the California Department of Transportation (Caltrans), the aim is not to persecute offenders but to track vehicle weights in order to prevent or
