Chapter 2 Signs

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WSDOT Traffic manual M Page 2-1 April GeneralEffective signing is the primary method to provide regulatory, warning, and guidance information to transportation system users. Signing that is clear, concise, and accurate supports safe, legal, and orderly travel on public roadways and transportation facilities. sign use must be limited and conservative since Signs can lose their effectiveness when used to excess. Signs are not typically used to confirm Rules of the Chapter contains information about signing on the state roadway system and is intended for persons involved in traffic operation or design.

Chapter 2 Signs WSDOT Traffic Manual M 51-02.05 Page 2-3 April 2011 LETTER HEIGHT = (N/3 + 2) f Where: N = Number of words in the message. f = Legibility factor (see Table 2-1).

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