Motorists' requirements for active grade crossing warning devices. Final report.
| Data(s) |
01/10/1977
|
|---|---|
| Resumo |
Federal Highway Administration, Traffic Systems Division, Washington, D.C. Mode of access: Internet. Author corporate affiliation: MB Associates, San Ramon, Calif. Report covers the period July 1975-Aug 1977 Subject code: CDJI Subject code: CIF Subject code: HBD Subject code: NDI Subject code: WEF Subject code: WEG |
| Formato |
bib |
| Identificador | |
| Idioma(s) |
eng |
| Direitos |
Items in this record are available as Public Domain, Google-digitized. View access and use profile at http://www.hathitrust.org/access_use#pd-google. Please see individual items for rights and use statements. |
| Palavras-Chave | #Warning signs. #Visibility. #Railroad grade crossings. #Laboratory tests. #Flashing traffic signals. #Field tests. #Contrast. #Warning Signs/ Warning Signals. #Railway Crossings. #Optical Contrast/ Conspicuity. #Laboratory Experiments. #Flashing Signals. #Field Experiments. |
| Tipo |
text |
