Adverse weather degrades the capacities and operating speeds on roadways, resulting in congestion and productivity loss. Without a solid understanding of the mobility impacts of weather on traffic patterns, freeway operators do not have the estimates of speed and capacity reductions to predict and simulate the impacts of traffic management strategies. Nearly all traffic engineering guidance and...

Time headway is a significant traffic flow parameter that affects the capacity and safety of highways and freeways. Time headways are broadly used in different areas of traffic and transport engineering such as capacity analysis, safety studies, car following and lane changing behavior modeling, and level of service evaluation. In this paper, the time headway distribution is investigated for an...

Urban joblessness and inner city deprivation are a feature of the late twentieth century throughout the developed world. This paper considers the effectiveness of spatiallytargeted programmes in creating employment in deprived urban areas. It begins by discussing the twin themes of “enterprise” and “localism” which have dominated the UK policy response to urban problems in the 1990s and goes on...