A preliminary laboratory investigation of passive railroad crossing signs. Final report.
| Data(s) |
06/04/1993
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|---|---|
| Resumo |
Mode of access: Internet. Author corporate affiliation: Federal Highway Administration, Office of Safety and Traffic Operations Research and Development, McLean, Va. Report covers the period May 1991 - May 1992 Subject code: CDJI Subject code: HBED Subject code: NDI 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 | #Visibility. #Railroad grade crossings. #Laboratory tests. #Grade crossing protection systems. #Contrast. #Railway Crossings. #Optical Contrast/ Conspicuity. #Laboratory Experiments. #Crossing Signals. |
| Tipo |
text |
