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Maximum axle weight of vehicles - 75 Pa. Cons. Stat. § 4943

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     § 4943.  Maximum axle weight of vehicles.
        (a)  General rule.--No vehicle or combination driven upon a
     highway shall have a weight upon any axle in excess of the
     lesser of the manufacturer's rated axle capacity or the
     following applicable weight:
            (1)  Steering axles.--The maximum axle weight upon a
        steering axle shall not exceed 20,000 pounds.
            (2)  Other axles.--

                            Maximum Axle Weight in Pounds Upon:

      If the Center-to-Center
       Distance Between the       One of Two         Other of Two
     Nearest Adjacent Axles is: Adjacent Axles      Adjacent Axles

            Under 6 feet            18,000              18,000
            6 to 8 feet             18,000              22,400
            Over 8 feet             22,400              22,400

        (b)  Exceptions and special applications.--
            (1)  No combination registered and carrying a gross
        weight in excess of 73,280 pounds shall have an overall gross
        weight on any single axle, other than the steering axle, in
        excess of 20,000 pounds, or an overall gross weight on any
        group of two or more consecutive axles in excess of that
        produced by application of the following formula:
                        LN
            W = 500     ---  + (12N + 36)
                        N-1
        Where W = overall gross weight on any group of two or more
        consecutive axles to the nearest 500 pounds, L = distance in
        feet between the extreme of any group of two or more
        consecutive axles and N = number of axles in group under
        consideration, except that two consecutive pairs of axles may
        carry a gross load of 34,000 pounds each, provided the
        overall distance between the first and last axles of such
        consecutive pairs of axles is 36 feet or more.
            (2)  When a truck tractor is registered in excess of
        73,280 pounds and is operating in combination with an overall
        gross weight of 73,280 or less, the maximum axle weight
        limits of subsection (a)(1) and (2) shall be applicable for
        the purposes of weighing the combination.
            (3)  No trucks registered in Classes 17 and 20 shall have
        an overall gross weight in excess of 21,400 pounds on any
        tandem axle. In addition, a group of three tandem axles shall
        not have an overall gross weight in excess of 60,000 pounds.
        This paragraph shall not be applicable to interstate highways
        except for a highway added to the interstate system under the
        National Highway System Designation Act of 1995 (Public Law
        104-59, 109 Stat. 568).
            (4)  Subsection (a)(1) and (2) do not apply to a vehicle
        or combination operating under the terms of an agreement
        established under section 4902(c) (relating to restrictions
        on use of highways and bridges). This paragraph shall not be
        applicable to interstate highways except for a highway added
        to the interstate system under the National Highway System
        Designation Act of 1995.
            (5)  For the purpose of determining the weight that a
        six-axle combination registered in Class 25 shall be
        permitted to carry on a highway, paragraph (1) shall be
        applied only in the following manner. If the external bridge
        of the combination is 43 feet and the internal bridge is 32
        feet, a group of two consecutive axles may carry a gross
        weight of 34,000 pounds and a group of three consecutive
        axles may carry a gross weight of 42,500 pounds. These axles
        shall be weighed simultaneously to determine their gross
        weight.
            (6)  (Deleted by amendment).
        (c)  Gross weight.--No vehicle or combination shall be driven
     with a gross weight in excess of the sum of the allowable axle
     weights as set forth in this section, nor shall any vehicle or
     combination be driven with a gross weight in excess of the sum
     of the manufacturer's rated axle capacities.
        (d)  Location of front axle of semitrailer.--(Deleted by
     amendment).
        (e)  Lift-axle position.--
            (1)  Except when necessary for turning a truck that is
        operating under normal load conditions, the lift axle shall
        be in full contact with the highway under full pressure.
            (2)  Any person violating this subsection is guilty of a
        summary offense and shall, upon conviction, be sentenced to
        pay a fine of $250.
     (June 18, 1980, P.L.229, No.68, eff. 60 days; Oct. 10, 1980,
     P.L.791, No.147, eff. imd.; July 7, 1983, P.L.32, No.19, eff.
     imd.; Mar. 21, 1996, P.L.35, No.11, eff. 60 days; Dec. 21, 1998,
     P.L.1126, No.151, eff. 60 days)

        1998 Amendment.  Act 151 amended subsec. (b)(3) and (4) and
     deleted subsecs. (b)(6) and (d).
        1996 Amendment.  Act 11 amended subsec. (b).
        1983 Amendment.  Act 19 amended subsec. (a).
        Cross References.  Section 4943 is referred to in section
     4945 of this title.
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