Changes and revisions to route markings can be the result of new construction, actions of adjoining states or changing conditions in an area. The district must initiate proposed route marking revisions. When considering a route marking change, two items are to be considered:
- Does the recommended marking fit the criteria for the type of route?
- Can the route be signed so it can be easily followed?
The District’s Asset Management Committee, which is comprised of members from each functional unit within the district, will review all changes in route markings. Once the committee has reviewed the change in route marking and all concerns and issues have been addressed, the change in route marking shall be forwarded to Transportation Planning for further processing. The recommendation is to be electronically transmitted and shall include:
- Letter of transmittal, submitted by the district engineer.
- Six color copies of an electronic map with symbols showing the proposed marking.
- Reason for the change.
- Any other supporting information.
One to two months should be allowed for a state numbered or lettered route-marking change to be considered and approved. Up to a year is to be allowed for final approval of a proposed change to U.S. or Interstate routes because the AASHTO subcommittee that considers federal route changes only meets twice a year, in the spring and the fall.
The transmittal letter should indicate whether the request involves other states. When a federal route change affects another state, the submittals are to be coordinated and presented to AASHTO at the same meeting.