I will improve the vehicle spawning algorithm in a future update (already started the base work for it). It will only use the sides of the road, and will try many different positions before giving up and just using the closest spot (as it currently does).
Although do not that the current system for moving those vehicles is very lazy, and doesn't try any locations, it just uses the closest, but PV spawning needs improving too, so I might as well do one lot of work instead of two, and use that algorithm in both places.
