(1)__A 3-axle truck tractor with a 3-axle semitrailer at a gross vehicle weight of 108,900 pounds; and

(2)__A 3-axle truck tractor with a semitrailer- semitrailer combination, configured as a B-train double with 8 axles total, at a gross vehicle weight of 137,700 pounds.__The weight of the 2nd semitrailer may not exceed the weight of the first semitrailer.

C.__Maine axle weight limits, axle group limits, commodity allowances, maximum dimensions and all other commercial vehicle limits and requirements must apply under the pilot project, except that the B-train double overall length limit must be 82.02 feet, or 25 meters.

D.__The manufacturer's ratings for gross vehicle weight, axle capacity, brake systems and other components for which a manufacturer's rating is available may not be exceeded under the pilot project.

E.__Each truck combination under the pilot project must display a credential obtained for a fee from the Secretary of State.__The fee must be established by the Commissioner of Transportation in an amount to cover related administrative costs, compliance monitoring and the additional cost of highway damage resulting from the pilot project, calculated using accepted engineering practices.__ The Secretary of State shall adopt rules to implement this paragraph in consultation with the Department of Transportation and the Department of Public Safety.__Rules adopted pursuant to this paragraph are routine technical rules as defined in Title 5, chapter 375, subchapter 2-A.

F.__The Commissioner of Transportation may revoke the privileges under the pilot project of participating trucks and trucking companies for cause, including repeatedly exceeding size and weight limits or operating outside the designated route of travel.__Revocation by the Commissioner of Transportation is considered a final agency action.

2.__Definition.__As used in this section, unless the context otherwise indicates, "B-train double" means a truck tractor- semitrailer-semitrailer combination vehicle in which the 2 trailing units are connected with a B-train assembly.__The B- train assembly is a rigid frame extension attached to the rear frame of a first semitrailer that allows for a 5th wheel