2010 Pennsylvania Code
Title 75 - VEHICLES
Chapter 33 - Rules of the Road in General
3364 - Minimum speed regulation.

     § 3364.  Minimum speed regulation.
        (a)  Impeding movement of traffic prohibited.--Except when
     reduced speed is necessary for safe operation or in compliance
     with law, no person shall drive a motor vehicle at such a slow
     speed as to impede the normal and reasonable movement of
     traffic.
        (b)  Slow moving vehicle to drive off roadway.--Except when
     reduced speed is necessary for safe operation or in compliance
     with law, whenever any person drives a vehicle upon a roadway
     having width for not more than one lane of traffic in each
     direction at less than the maximum posted speed and at such a
     slow speed as to impede the normal and reasonable movement of
     traffic, the driver shall, at the first opportunity when and
     where it is reasonable and safe to do so and after giving
     appropriate signal, drive completely off the roadway and onto
     the berm or shoulder of the highway. The driver may return to
     the roadway after giving appropriate signal only when the
     movement can be made in safety and so as not to impede the
     normal and reasonable movement of traffic.
        (c)  Establishment of minimum speed limits.--At any other
     time when the department or local authorities under their
     respective jurisdictions determine on the basis of an
     engineering and traffic investigation that slow speeds on any
     highway or part of a highway impede the normal and reasonable
     movement of traffic, the department or such local authority may
     determine and declare a minimum speed limit below which no
     person shall drive a vehicle except when necessary for safe
     operation or in compliance with law. The minimum limit shall be
     effective when posted upon appropriate fixed or variable signs.

        Cross References.  Section 3364 is referred to in sections
     4305, 6109 of this title.