Field study of a variable-height highway-noise barrier. Final report.

National Highway Traffic Safety Administration, Office of Research and Development, Washington, D.C.

Safety and environmental design considerations in the use of commercial electronic variable-message signage. Final report.

Mode of access: Internet.

Feasibility demonstration of a novel, flat-belt, continuously variable transmission for automotive and electric-hybrid vehicle application. Final report.

Energy Department, Washington, D.C.