Montana/Major roads/Main View history


See Montana/Major roads for guidance in Montana that may not be universal to all other states and territories. }}

Locking Standard

Montana observes the following locking standards on the following types of road segments. All roads must be locked at least to the minimum level stated. If needing a segment unlocked or locked to a </> level please use the Unlock and Update Request forum.

Montana Minimum Locking Standards
Segment Type Rank
 Freeway  4[1]
 Major Highway  4
 Minor Highway  3
 Ramp  3
 Primary Street  2
 |-|-|-|-|-|-|-|-|-| Railroad |-|-|-|-|-|-|-|-|-|  2
All Others 1

^1 Freeways may be locked at a 4 or 5.

U-turn Legality

Limitation on U-turns --[1] turning on curve or crest of grade prohibited. An operator of a vehicle may not turn the vehicle to proceed in the opposite direction:

  • unless the movement can be made safely and without interfering with other traffic; or
  • upon any curve or upon the approach to or near the crest of a grade where the vehicle cannot be seen by the operator of any other vehicle approaching from either direction within 500 feet.

^1 MT Code 61-8-334. Limitation on U-turns