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
A study has looked at what 20mph (30 km/h) speed limits mean in terms of road safety – and the answers are encouraging. Alan Dron speaks to transport researcher Aud Tennøy…
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.
