1. Department of Psychology, Elon University, Campus Box 2337, Elon, NC 27244–2010
2. Accessible Design for the Blind, 3 Manila Street, Asheville, NC 28806
3. Department of Blindness and Low Vision Studies, Western Michigan University, 1903 West Michigan Avenue, MS 5218, Kalamazoo, MI 49008–5218
4. Accessible Design for the Blind, P.O. Box 1212, 235 South Street, Berlin, MA 01503
5. Highway Systems Group, Institute for Transportation Research and Education, North Carolina State University, Box 8601, Raleigh, NC 27695
6. Department of Blindness and Low Vision Studies, Western Michigan University