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GSGLC-4 Guide Signs, Part II: Guidelines for Airport Guide Signing Guide Signs, Part III: List of Control Cities for Use in Guide Signs on Interstate Highways Part I of this newly revised document provides a basis for development of state policies for selection of supplemental guide signs for traffic generators adjacent to freeways. Part II, on airport guidelines, has been expanded to include all highways. Part III contains the list of approved control cities for purposes of providing directional guidance on the interstate highway system. |
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