| (a) Minimum axle group spacing. For an axle group to
be permitted for maximum weight authorized under this section:
(1) an axle group must have a minimum spacing of four
feet, measured from center of axle to center of axle, between each
axle in the group; and
(2) two or more consecutive axle groups must have a
minimum axle spacing of 12 feet, measured from center of the last
axle of a group to center of the first axle of the immediately following
group.
(b) Maximum permit weight. Maximum permit weight for
an axle or axle group is the weight computed by multiplying 650 pounds
times the total number of inches of the width of tires on the axle
or group or the following applicable axle or axle group weight, whichever
is less:
(1) single axle - 25,000 pounds;
(2) two-axle group - 46,000 pounds;
(3) three-axle group - 60,000 pounds;
(4) four-axle group - 70,000 pounds;
(5) five-axle group - 81,400 pounds; or
(6) trunnion axles - 60,000 pounds if:
(A) the trunnion configuration has two axles;
(B) there are a total of 16 tires for the trunnion
configuration; and
(C) the trunnion axle, as shown in the following diagram,
is 10 feet in width.
Attached Graphic
(c) Tire load rating. A permit issued under this subchapter
does not authorize the vehicle to exceed manufacturer's tire load
rating.
(d) Permits for vehicles exceeding permit weight limits.
For a vehicle exceeding weight limits provided in this section, a
person must apply directly to the Texas Department of Motor Vehicles
for an oversize or overweight permit in accordance with Transportation
Code, Chapter 623.
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