North Dakota Century Code Title 11. Counties § 11-10-31. Addition of penalty to traffic signs--Requirements

1. The department of transportation shall allow a county, city, or township to affix to any traffic sign prohibiting engine brakes and signifying that a vehicle noise ordinance is enforced and the amount of the penalty for violation of an offense corresponding with the purpose of the sign.

2. A county, city, or township may affix the amount of the penalty to a traffic sign under subsection 1 only if the:

3. The penalty sign must be uniform in size and text in relation to the traffic sign to which it is affixed and in compliance with the manual on uniform traffic control devices.

4. This section applies only to state highways within a county, city, or township.