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TakaWhat does this "on" mean?Open platforms are no longer allowed on buses.

on = aboard; as a part of the structure of

This is somewhat difficult to answer because I don't know what you mean by an "open platform" in the context of buses; and the second sentence is ungrammatical.

If "open platforms" mean very high-heeled shoes, then it means you can no longer board a bus wearing such shoes. If it means unenclosed passenger compartments on a bus, then it means that buses are no longer allowed to be built w

Mister Micawber TakaWhat does this "on" mean?Open platforms are no longer allowed on buses.on = aboard; as a part of the structure of

I took "platforms" as completely different things by mistake, which is why I got confused: they are actually part of buses.

Thanks, MM!

I hadn't considered Anonymous's shoe possibility, but googling reveals that platform shoes (high- or low-heeled) are called such because they have thick soles. A glance will tell you that they are not a particularly dangerous sort of shoe for a bus ride (certainly not as dangerous as spike heels, for instance), so that option is highly unlikely.

Here is a bus with an open platform:


For some reason, my link disappears when I submit the post. Google "Open- platform bus' for a picture.

Is this one, 5jj?

Thanks, Mr M. That's a good example of an open-platform bus. All double-decker buses had an open platform at the back when I was young. We didn't call them 'open-platform' buses - we just took it for granted that that was the way buses were. It was great - you could run after a departing bus and have a chance of jumping on. You didn't have to wait for a bus stop to get off - you could jump off any