Page:Report of Joint Board on Interstate Highways.pdf/64

 (5-A) Look or Attention Sign - A series of signs in conformity with the action of the Association of State Highway Officials, is recommended for use where extreme caution or reduction of speed is not always necessary, but where attention Of the driver should be specifically directed to conditions requiring care in driving. This sign would be used sparingly to draw attention to school zones, hospital zones, etc. The design recommended is a square sign with yellow background and black lettering, of the same general type and size as the caution sign. (6) Directional Sign - This sign is made with a 36-inch standard width, the height to be altered as necessary, and a schedule of heights for 4, 5, 6, 7 and 8 line signs is given. On this design an attempt was made to work out a uniform scheme for mentioning points on the route, but was discarded as not being practicable in view of the great variety of conditions. In general, it is believed desirable to mention all points in their order of distance, but no other schematic arrangement is believed practicable. (7) Named Signs for Physical Features - This sign is made with a standardized height of 12 inches, the length to vary as necessary. (8) State Line Signs - This sign is given a standard width of 36 inches, the height to vary as necessary. (9) Speed Limit Signs. - This sign is 20 inches by 30 inches and aims to emphasize the rate of speed by placing the mileage number at the top. (10) Side Town Directional Signs - This sign is for use in designating distances to towns not on the interstate highway, and is generally similar to the directional sign recommended above.

All of these signs are recommended by your committee except alternates above noted.

Your committee fully understands that additional signs may be necessary, but it believes this series covers the general type of all signs likely to be used and in order to provide for such additional signs as may be required later by the several States, makes the following recommendation:

Whenever a State desires a new standardized sign for any purpose, it shall submit a request with suggestions to some