Meanings of orange flashing in English

Then he heard a shrilling and saw orange flashing.

Purple fingers clenched and jerked, the wheels screeched in protest, and the orange flashing lights rushed up to meet us.

Instead of buses full of camera-toting tourists, road workers and engineers wear high vis and hardhats, and drive utes with orange flashing lights.

I think that the Department of Agriculture and the IFA should ensure all farmers have an orange flashing light on top of all farm vehicles.