(2) From 30 to 50 miles per hour, inclusive, regarding roads in all other areas.

Prior to establishing a speed limit, the municipality must perform a traffic investigation that reviews the factors identified in the applicable sections of the Manual on Uniform Traffic Control Devices. The municipal officers shall validate that speed limit in accordance with the procedure for establishing municipal traffic ordinances set forth in Title 30-A, section 3009, post standard speed limit signs in accordance with the Manual on Uniform Traffic Control Devices and provide written notice of that speed limit zone to the Commissioner of Transportation on forms approved by the Department of Transportation.

The Department of Transportation may require a municipality with a population of 5,000 or more as measured by the latest decennial United States census that has not provided written notice to the department that the municipality will set speed limits in accordance with this paragraph to provide the department with all data necessary to set such speed limits. The nature, extent and form of that data must be acceptable to the department and may include, without limitation, the reason for the request, length and location of the proposed speed zone, road width, number of driveways in that zone, traffic volume, posted speed, prevailing speed as measured by radar, accident history and speed enforcement efforts.; and

Sec. 4. 29-A MRSA §2075, sub-§3, ¶F is enacted to read:

F.__Install and operate traffic light violation monitoring systems.

Sec. 5. 29-A MRSA §2075, sub-§6 is enacted to read:

6.__State and county authority.__The State or a county may install and operate traffic light violation monitoring systems.

Sec. 6. 29-A MRSA §2601-A is enacted to read:

§2601-A.__Enforcement actions using evidence from a traffic

light violation monitoring system

The process and rules of evidence described in this section apply in enforcement actions for violations of state law in which