18.6.421 TOURIST-ORIENTED DIRECTIONAL ADVANCE SIGNS
(1) Advance signs should be limited to those situations where sight distance, intersection vehicle maneuvers, or other vehicle operating characteristics require advance notification of the destinations and their directions.
(2) The design of the advance sign should be identical to the design of the intersection approach sign, but directional arrows and distances to the destinations should be omitted, and an action message (e.g., "next right" or "ahead") should be placed on the sign above the business identification sign panel. The legend "right ½ mile" or "left ½ mile" may be used on advance signs when there are intervening minor roads.
(3) No tourist-oriented directional sign (TODS) may be erected until all necessary advance signs are in place.