Like at an intersection? I was thinking about this yesterday too. I am pretty sure it means like "hey this is an intersection and the other roads have a flashing red, please be alert but don't slow down unless necessary".
Whereas yellow flashing means "slow down and make sure it's safe before entering intersection, there might be cross-traffic" and red is "treat this like a stop sign"
saltr t1_j68gxfo wrote
Reply to comment by teem in non-Cambridge native here. wtf is this? by FlimsyRaisin
Like at an intersection? I was thinking about this yesterday too. I am pretty sure it means like "hey this is an intersection and the other roads have a flashing red, please be alert but don't slow down unless necessary".
Whereas yellow flashing means "slow down and make sure it's safe before entering intersection, there might be cross-traffic" and red is "treat this like a stop sign"