Potential means of cost reduction in grade crossing automatic gate systems. Volume II: improved gate arm concepts for railroad/highway grade crossings. Final report.

Transportation Systems Center, Cambridge, Mass.

Guidelines for evaluating fluorescent strong yellow green crossing signs. Final report.

Federal Highway Administration, Washington, D.C.

Examination of unsignalized intersection, straight crossing path crashes and potential IVHS countermeasures. Final report.

National Highway Traffic Safety Administration, Washington, D.C.

Examination of signalized intersection, straight crossing path crashes and potential IVHS countermeasures. Final report.

National Highway Traffic Safety Administration, Washington, D.C.

Rail-highway crossing warning device - life cycle cost analysis. Final report.

Federal Railroad Administration, Office of Safety, Washington, D.C.

A study of state programs for rail-highway grade crossing improvements. Final report.

Federal Railroad Administration, Office of Policy and Program Development, Washington, D.C.

Innovative concepts and technology for railroad-highway grade crossing motorist warning systems. Vol. I: overview and concept generation and analysis. Final report.

Transportation Systems Center, Cambridge, Mass.

Innovative concepts and technology for railroad-highway grade crossing motorist warning systems. Vol. II: the generation and analysis of alternative concepts. Final report.

Transportation Systems Center, Cambridge, Mass.

Rail-highway crossing hazard prediction research results. Final report.

Transportation Department, Washington, D.C.

Crossing the lines and closing the gaps : critical issues in mainstreaming workers with disabilities : an interdisciplinary approach to the medical/vocational rehabilitation process.

Shipping list no.: 89-230-P.

The upper atmosphere : threshold of space /

Mode of access: Internet.

Improved conventional force capability : raising the nuclear threshold : a staff study /

Mode of access: Internet.

An approach to the general synthesis of a threshold element network.

Vita.

Enumeration of threshold functions of eight variables,

Bibliography: p. 58-59.

A linear programming code to determine whether a Boolean function is a threshold function,

Bibliography: p. 14.