1.   Why did that guy flash his headlights at me?

2.   Why is that guy flashing his headlights at me?

3.   He lost his temper after a driver flashed her headlights as he overtook.

4.   He almost ruined it by parking right up behind me and flashing his headlights once.

5.   He was said to have done so by parking a white car in the housing complex lot and flashing the headlights.

6.   He notes that when law officers do speed checks, some drivers warn approaching drivers by flashing their headlights.

7.   I flash my headlights only if I see someone coming toward me at night without their lights on.

8.   Many drivers flash their headlights to alert others to slow down and avoid a ticket.

9.   Mrs. Manning would drive by and flash her headlights, to signal her that it was safe to come out.

10.   On a particularly dark, almost deserted road, the officer began flashing his headlights.