When tram lines and roads are in the same place (like in many cities) then there might be z-fighting
Find a way to resolve z-fighting - e.g. by deciding on showing only the one (tram) or the other (tram). As there currently is only 1 lane per direction (and no one-ways) combined with shader based traffic it might be better to discard trams, when they are on the same street.
See also parameter USE_TRAM_LINES
Edited by Rick Gruber-Riemer