Vehicles can sometimes disappear when lights are on in bright conditions.
Old example is the Truck on top of a hill, lights off front silhouette can be seen, lights on it disappears.
Same with aircraft and landing lights. Resulting in RAF Hawks going all black.
My bike as twin headlamps, but might look like a car a long way off.
Sat with friend in car who nearly drove straight on through a farm gate on a bend, because the farmers tractor had two bright lamps at front and two smaller dimmer side lights on top of cab. Looked like two vehicles coming towards us down a hill!