Highway work zones constitute a major safety concern for government agencies, the
legislature, the highway industry, and the traveling public. Despite the efforts made by
government agencies and the highway industry, there is little indication that work zone
crashes are on the decline nationwide. The main reason behind this is that current safety
countermeasures are not working effectively in the work zones. Lack of effective
countermeasures may be due to the fact that the characteristics of work zone crashes are not …