After overtaking, the truck behind you flashes briefly once: this is what the driver wants to tell you.

enough room to move back to the right.

Such a signal is generally intended as helpful communication rather than an attempt to pressure the other driver. It can help the overtaking driver better judge the position of the truck and determine when the maneuver is complete.

But this kind of road communication is not limited to truck drivers; drivers towing trailers or caravans can also benefit from the same type of signal.

Motorists Can Also Encounter This Signal

The informal signal is often associated with communication between truck drivers, but