Where to find spare Plaroad switches

What about these? The lever lenght looks long enough to fit in Plaroad vehicles.
https://www.aliexpress.com/item/4001207529493.html

Certainly looks promising. Using the words 'mini slide switch', I got a whole bunch of results in ebay as well, including ones using the exact same pictures as your AliExpress suggestion, so just a matter of finding the closest match for the dimensions. Are the ones in Plaroad / Motor Tomica vehicles definitely 3-pole? - I can't remember and haven't checked.  I could use a few of these myself, so I will be investigating further.

Here have a picture of reference. The image is not mine, because mine had already broken wires when I opened it for the first time.