Of first importance for high speed traffic are highway symbols and messages defining proper use of roadway; examples given of Denver-Boulder Turnpike where simplified route diagrams, bearing reflectorized arrows and route designations on 4×6-ft plywood panels, are erected at all junction points; speed restriction of 65 mph is posted every 2 1/2 mi; road delineation markers consisting of reflector units mounted in guard posts are provided along shoulder edge.
Traffic control and facilitation
Am City
American City ; 68 , n 10
1953
Article (Journal)
English
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Traffic control and facilitation
Engineering Index Backfile | 1946
Traffic control and facilitation
Engineering Index Backfile | 1946