Certain types of mobility vehicles and powered wheelchairs are exempt from tax provided they meet the following criteria:
- They have been fitted with a limited device that stops them going over 4mph on footways
- While on the road, they have a maximum speed of 8mph
How can the limiting device work out if on a footway?
And it seems they need to be registered, so that's another hurdle.
But I fail to see how any device can stop them doing over 4 MPH on footways? If manually switched, it clearly does not stop them doing over 4 MPH.