Research Article

Predicting Work Zone Collision Probabilities via Clustering: Application in Optimal Deployment of Highway Response Teams

Table 2

Input variables used for WZ clustering.

Variable Description Columns

Season Season of year 3
Road type Type of road (I, US, MD) 3
Weekend Equals 1 for Saturday or Sunday, otherwise 0 1
Lanes The number of all, main, shoulder and median lanes 1
AADT Average annual daily traffic 1
Peak Peak duration / overall duration 1
Day Day duration / overall duration 1