I adhere to the speed limit in my car and lorries overtake m

ROG:
As above - car speedos are not calibrated and will always show more than actually doing
The speed readout from a satnav is lot more accurate

Actually they are calibrated, but have to fall inline with EU regs, to over read. I’ll update this post when I find the correct page.

JackMacyntire:
If I’m on the motorway, and I adhere to the speed limit, I get overtaken continuously by lorries. I’ve noticed it especially if going trough roadworks, where the speed limit tends to be 40 or so. What gives?

I’m not sure what you’re getting at? I tend to just pootle in my car also, adhering to the limit. If trucks, buses and whatever want to overtake, then crack on lad. No skin off my nose. Couldn’t give 2 [zb]s if the pr1ck behind in the artic needs to be somewhere quicker than I intend to drive.