2010 Pennsylvania Code
Title 75 - VEHICLES
Chapter 33 - Rules of the Road in General
3334 - Turning movements and required signals.

     § 3334.  Turning movements and required signals.
        (a)  General rule.--Upon a roadway no person shall turn a
     vehicle or move from one traffic lane to another or enter the
     traffic stream from a parked position unless and until the
     movement can be made with reasonable safety nor without giving
     an appropriate signal in the manner provided in this section.
        (b)  Signals on turning and starting.--At speeds of less than
     35 miles per hour, an appropriate signal of intention to turn
     right or left shall be given continuously during not less than
     the last 100 feet traveled by the vehicle before turning. The
     signal shall be given during not less than the last 300 feet at
     speeds in excess of 35 miles per hour. The signal shall also be
     given prior to entry of the vehicle into the traffic stream from
     a parked position.
        (c)  Limitations on use of certain signals.--The signals
     required on vehicles by section 3335(b) (relating to signals by
     hand and arm or signal lamps) shall not be flashed on one side
     only on a disabled vehicle, flashed as a courtesy or "do pass"
     signal to operators of other vehicles approaching from the rear,
     nor be flashed on one side only of a parked vehicle except as
     may be necessary for compliance with this section.
        (d)  Discontinuing turn signals.--Turn signals shall be
     discontinued immediately after completing the turn or movement
     from one traffic lane to another traffic lane.