1. Federal Highway Administration and Vanderbilt University, Turner-Fairbank Highway Research Center, 6300 Georgetown Pike, McLean, VA 22101.
2. Federal Highway Administration, Turner-Fairbank Highway Research Center, 6300 Georgetown Pike, McLean, VA 22101.
3. SaLUT, Inc., Turner-Fairbank Highway Research Center, 6300 Georgetown Pike, McLean, VA 22101.