Transportation Research Record Journal of the Transportation Research Board
1999 / 01 Vol. 1692; Iss. 1
Legibility of Traffic Sign Text and Symbols
Zwahlen, Helmut T., Schnell, ThomasТом:
1692
Мова:
english
Журнал:
Transportation Research Record: Journal of the Transportation Research Board
DOI:
10.3141/1692-15
Date:
January, 1999
Файл:
PDF, 1.63 MB
english, 1999