Flashing

Flashing lights transmit messages between ships and to motorists along city streets.

I saw flashing red lights in my rear-view mirror and my heart sank.

Something is flashing up ahead.

Do not cross the road when the green man is flashing.

A very small percentage of individuals may experience epileptic seizures when exposed to certain light patterns or flashing lights.

They kept flashing that light in my eyes.

The alarm went off and a red light started flashing.

Why is that light flashing?

Why's the yellow light flashing?

I saw the patrol car’s blue flashing emergency lights in my rearview mirror, so I pulled over, onto the right shoulder of the highway.