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Section 2C.28 BUMP and DIP Signs
- BUMP (W8-1) and DIP (W8-2) signs should be used to give warning of a sharp rise or depression in the profile of the road.
- These signs may be supplemented with an Advisory Speed plaque.
- The DIP sign shall not be used at a short stretch of depressed alignment that might momentarily hide a vehicle.
- A short stretch of depressed alignment that might momentarily hide a vehicle should be treated as a no-passing zone when center line striping is provided on a two-lane or three-lane road.
Source: 2009 MUTCD