Category talk:616 Temporary Traffic Control
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The work zone figure entitled "a typical detour" shows signs numbered 17R, 18, 29 and 52 on sheet 1, but does not define what these signs are. --Martik2 15:57, 28 January 2009 (CST)
Keith L. Smith: Sorry for the delay in answering you. These signs are identified in Fig. 616, Signs and Devices Legend. "17R" is Detour (right), M04-1; "18" is Detour Ahead, WO20-2; "29" is Road Closed, R11-2 and "52" is End Detour, MO4-8a. Someday we will have the technology to improve on this method that relies on using a legend to decode the signs' numbers.
