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2024 Pennsylvania Winter/Spring Frost Law Restrictions

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2024 Pennsylvania Winter Frost/spring Thaw Laws and Seasonal Weight Restrictions

Seasonal road postings are implemented to address instances where the structural analysis of a road indicates that permanent restrictions may not be necessary, particularly in the context of the freeze/thaw damage cycle. According to PennDOT Publication 23, Chapter 15, the Freeze/Thaw Period is between February 15th and April 15th. During this time, temperature fluctuations result in changes, specifically weakening, to the structural strength of the road surface. Although the website search did not yield specific guidelines for reductions in axle weight, additional restrictions may be imposed by the Posting Authority due to severe weather conditions or unforeseen circumstances. Hauling authorized by Letters of Local Determination (LoLDs) is prohibited during the Freeze/Thaw Period unless a modification is explicitly requested by the User and approved by the Posting Authority. Users are required to confirm the effective dates of the Freeze/Thaw Period with the District.

Pennsylvania Oversize Load Travel Times and Banners

Regarding running hours and holiday restrictions, travel is permitted during daylight hours from sunrise to sunset, with Saturday travel allowed from sunrise until noon. Travel is restricted on Sundays and major holidays, including New Year’s Day, Memorial Day, Independence Day, Labor Day, Thanksgiving Day, and Christmas Day. Except during the listed holiday periods, movement under permit in urbanized areas is authorized 7 days a week, but only during specific periods. Regarding the display of “Oversized Load” banners, clean yellow warning signs, at least 7 feet wide and 18 inches high, with the words “OVERSIZE LOAD” in black letters, must be mounted on both the front and rear of the permitted oversize vehicle or load. This requirement applies unless otherwise specified in the permit.

Pennsylvania Oversize Load Flags and Lights

Flag requirements mandate marking points of excessive length or width, including overlength vehicles or combinations and overwidth vehicles or loads extending beyond one or both sides of a vehicle. Clean, plain, red, or fluorescent orange warning flags, at least 18 inches square, must be used for this purpose. For movements made within urbanized areas between 3 a.m. and sunrise, oversized vehicles and loads must be illuminated with additional lighting to ensure visibility from 1,000 feet in all directions. Headlamps and rear lights of permitted vehicles must be illuminated when in motion. This comprehensive set of regulations is in place to ensure the safe and responsible movement of oversized loads while prioritizing public safety and road integrity.


See also:

Tire chain laws.
Federal bridge formula.

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