[JFP in PA]

Originally Posted by ilikeching

yes, there are some regulation, but it seemed to be legal up to 4 pulses most states.

link to FAQ:
Pulse FAQ - Pulsing Not Flashing Third Brake Questions

If I were you, I'd look into that fact further before spending any money on this, in this state the rules on flashing lights on any type of automotive vehicle is limited to certain types of lights, colors, mounted at specific vehicle locations, and only on authorized vehicles with state certifications. The state regs on the subject do not mention anything about the number of pulses, but they are pretty specific about who can use them, and the penalties for use without proper certification. Even shop emergency vehicles have to be certified...............