The Relationship Between Pavement Width and Highway Safety on Two-Lane Paved Highway in Alberta, Canada

摘要

Many highway agencies widen lanes and shoulders on existing rural primary highways in an effort to provide safer highways. It is postulated that in Alberta, Canada, provocatively and perhaps contrary to conventional wisdom, there is no relationship between the width of a paved two-lane highway and the frequency of injury collisions on that highway. With limited funds, should a highway agency allocate funds for pavement widening, or direct funding to some other potentially more effective solutions to improve highway traffic safety?