(17 Jun 2024, 9:56 pm)Unber43 wrote I just wondered if anyone knows why the A690 and the A1 is both 50MPH in some stretch and not 70MPH?

Narrow lanes is the reason for the Gateshead Bypass / Newcastle Bypass being 50/60 mph.

The A690, I'd imagine is because of the close junctions but also cross over junctions which are dangerous, especially on a busy dual carriageway.