I think laws were frequently thought up by people with little or no experience of the subejct to which the law relates.
Crash helmets on motorbikes are compulsory in the UK but nothing else, although the police will stop people who aren't wearing a great deal and offer them a bit of friendly advice about their attire.
Nothing is compulsory on bicycles as far as I know, but a bicycle shop is not allowed to sell a pedal bike without a red reflector on the back. I think I could take mine off and be within the law if I wanted to.
The wearing of seatbelts is compulsory in cars where seatbelts are fitted!! They are compulsory on coaches but not buses (the distinction between the two vehicles being that buses are the ones that you may travel to work on, or to the next town on, and coaches are the ones that you would probably go on a tour on).
But I say so often, "you can't legislate against stupidity".
PS Back to the original subject - Isaac has got the gloves from one of our garden sets that get shared out between his bikers. He's a bit of a stickler for "proper attire" but I need to order some more - enough for the new sets as well, I supose as I forgot to get any with the last spares order. He hasn't seen these new sets yet