The study gives primary consideration to the approach-end treatment of channelization, with particular emphasis placed on driver's visibility under condition of night driving in adverse weather. Studies were conducted to determine the relative visibility and serviceability of marking materials for delineating channelization islands. Raised markings constructed with a slurry mixture were the most satisfactory of the devices tested. They provided stripes of sufficient height to cause an adequate vehicle rumble and presented a convenient surface texture for visibility purposes. Other studies were performed to evaluate the relative visibility and legibility of signs used to direct traffic around the approach-ends of channelizing islands. Eight different signs were used. They were similar in geometric configuration but differed in the types of materials used and the methods of illumination. The most satisfactory signs tested had prismatic reflectors or reflective sheeting on a black background. (Author)


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    Title :

    Channelization


    Contributors:

    Publication date :

    1966


    Size :

    63 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English




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