Section 250-170-10 - AUTHORIZED CONFIGURATIONS1. Allowable vehicle configurations are limited to: A. a three-axle truck tractor with a tri-axle semitrailer at a gross vehicle weight of 108,900 pounds; orB. a three-axle truck tractor with a semitrailer-semitrailer combination, configured as a B-train double with eight axles total, at a gross vehicle weight of 137,700 pounds. The weight of the second semitrailer may not exceed the weight of the first semitrailer; orC. a three-axle truck tractor with a four-axle semitrailer at a maximum gross vehicle weight of 113,800 pounds. This configuration is authorized only for the Calais to Baileyville route. See Appendix A for specific vehicle dimensions and axle weight limits.
29- 250 C.M.R. ch. 170, § 10