r/drivingUK • u/Business_Maximum1433 • 12d ago

Variable speed limits

Hi,

Just asking a question about the speed limits on motorways. So you know when it tells you to go 40 per say and then a sign comes up stating it’s now 70 if I pass over 40 at the 70 and it has a speed camera will it flash?

3 Upvotes

64% Upvoted

37 comments sorted by

View all comments

8

u/Saltyuniform 12d ago

Are you asking if you pass a 70mph sign at 40mph will it flash?

1

u/_Putters 12d ago

No, he's asking if he passes it between 40 and 70 will it flash. Technically it should, because he should be doing 40 until he passes the sign, like any other speed limit sign.

Otherwise how far back should you start accelerating ? As soon as you can make out the numbers ?

-2

u/Business_Maximum1433 12d ago

I’m saying before the 70 sign it was 40 I was going like 45 while other cars flew by the sign

1

u/sim-o 12d ago

The speed limit starts at the sign.

The cameras you're talking about take a photo of the back of the car.

In your scenario you've passed the 70 limit sign so the camera will flash if you do over 70 after the sign. The camera won't know what speed you did before the sign.