Ariz. Admin. Code § R17-6-212 - Class C Overweight, or Oversize and Overweight, Special Permit - Tridem Axle Group Configurations

A. The Department may issue a single trip class C overweight, or oversize and overweight, special permit for tridem axle group configurations a specific non-reducible vehicle, combination of vehicles, or vehicle and load combination that exceeds the maximum permitted weight computations for overweight axle group weight distribution as provided under R17-6-411, if the vehicle, combination of vehicles, or vehicle and load combination is equipped with at least one tridem axle group configured as provided under subsection (C) to achieve a maximum permitted weight of 60,000 pounds per tridem axle group subject to the specific routes and restrictions provided under Table 4.
B. An applicant for a single trip class C overweight, or oversize and overweight, special permit for tridem axle group configurations shall apply to the Department using the application procedure provided under R17-6-103, and include the $75 standard permit fee with the $15 class C review and analysis fee as provided under R17-6-211.
C. The single trip class C overweight, or oversize and overweight, special permit for tridem axle group configurations is available only for a vehicle, combination of vehicles, or vehicle and load combination equipped with at least one tridem axle group configured in conformance with the following criteria:
1. A minimum of four tires per axle, or two 14-inch wide tires per axle in each tridem axle group;
2. A minimum distance of eight feet out-to-out axle width for each tridem axle group;
3. A minimum distance of nine feet, and a maximum distance of 14 feet, between the center of the first axle and the center of the third axle of each tridem axle group, except as provided under subsection (D);
4. A minimum distance of 13 feet 7 inches between the center of the front steering axle and the center of the first axle of any consecutive tridem or tandem axle group; and
5. A minimum distance of 14 feet 1 inch between any two consecutive tridem or tandem axle groups, measured from the center of the last axle of the front group to the center of the first axle of the next group, with no other axles between.
D. A tridem axle group may be used in combination with other non-tridem axle groups if the non-tridem axle groups do not exceed the maximum permitted weight computations for overweight axle group weight distribution provided under R17-6-411.

E. A permit applicant with a vehicle, combination of vehicles, or vehicle and load combination exceeding 14 feet in width, 16 feet in height, 120 feet in length, 140,000 lbs overall gross vehicle weight, or any other dimension specified above shall continue to follow the Department's existing Class C permit application procedures provided under R17-6-204.

Notes

Ariz. Admin. Code § R17-6-212
New section made by final rulemaking at 19 A.A.R. 2486, effective September 7, 2013. Amended by final rulemaking at 28 A.A.R. 1264, effective 7/8/2022.

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