1. , Apartment 1706, 35 Merton Street, Toronto, Ontario M4S 3G4, Canada
2. Safety Engineering and Analysis, 4201 East Arkansas Street, Denver, CO 80222
3. Colorado Department of Transportation, 2000 South Holly Street, Denver, CO 80222
4. Turner-Fairbank Highway Research Center, FHWA, 6300 Georgetown Pike, McLean, VA 22101