@secondhand_shed@wrexham IIRC Engines are a lot more inefficient at 70mph+, with 50mph around optimum. Efficiency gets poorer again at lower speeds. You also get less unnecessary acceleration and breaking at that speed
@wrexham Drove on it twice today. Virtually nobody is dropping down to 50 from what I’ve experienced. I’ll include myself in that too as I feel I would be a sitting duck reducing speed, especially going past the slip roads. Very poor signage and it does seem completely pointless!