Originally Posted by durang-low

there called Mudulating head lights..heres the VA law code on that:

Motorcycles may be equipped with means of modulating the high beam of their headlights between high and low beam at a rate of 200 to 280 flashes per minute. Such headlights shall not be so modulated during periods when headlights would ordinarily be required to be lighted under § 46.2-1030.