(1) A vehicle weight analysis as defined in subchapter 6 of this chapter is issued for a specific vehicle configuration, axle spacings, axle weights and gross weight. The analysis is transferable only to an identical vehicle configuration. If there is any change in the vehicle configuration, axle spacings, axle weights or gross weight, the analysis is invalid and a new vehicle weight analysis must be requested by the permittee. When obtaining a permit for a vehicle operated under a vehicle analysis, it is the responsibility of the permittee to provide a copy of the analysis for reference. The permittee must carry a copy of the vehicle weight analysis in the assigned vehicle and be able to produce it for inspection by an officer.

(2) A route analysis as defined in subchapter 6 of this chapter is a one-time-only approval for a specific vehicle configuration, axle spacings, axle weights, gross weight and route of travel. A route analysis must be requested each time there is a change of axle weights, vehicle configuration, or a new route of travel is required. Only the Helena MCS office is authorized to issue permits for a vehicle configuration operating under the conditions of a route analysis.