Get a bus with all wheels a glowplug and a battery, for best result all must be pristine.
Drive the bus whereever you are to the next railcrossing. On the east coast or in the upper west of the map, doesnt matter.
Drive the bus carefully through the city. Watch it, because if you hit the sidewalkstones or anything in its way the bus cant get stuck before you stuck it on the crossings of the railroad.
Drive with the bus in which speed does not matter, over the crossing aaaand. Taaadaaaaa. It stucks. So get a new bus if you find one on the map. Can take a while because on foot it is a far way to run all the busspawns. If you have a scriptprogram you should use that. Make a new bus like everything pristine. Drive the bus to the next crossing aaaaand taaadaaaa. You are stuck again. Run to get a new bus or script you one if you are able to do that. drive to the next....... You know what follows! So the bus isnt able to cross the railroads at all. Nowhere on the entire map.

The bus isn´t able to cross the railroads anywhere. Bus is to low or railstreet crossroads to high.
The bus have a left front and right back accelaration not able to drive straight and not abler to free itself
from railcrossings.
Reproduce: Get into a full geared bus with all wheels pristine, battery and glowplug,
drive anywhere the streets are crossing the railroads and try to reach the other side.
Drive into the light. You wont make it! It is a pitty, because what are railroad crossing for if vehicles cant cross it.
If you have enough speed maybe, but then it happend that the wheels got ruined.

Vehicles like the Hatchback are good to drive with, but dont even slightly hit the sidestone on the foodpath or anything els.
It is like you drive into a wall. And sometimes it happens the car does a nice 360° to 720°, but thats only good on skate or snowboards
not with cars. Maybe the collisions are to hard or it must be smoothed if the tires hit something. With the bus I had the idea to maybe make it higher,
or give it a 4WD to overpass a railcrossing, or make all the crossing on railroads lower so the bus have no trouble to pass them.
Or to make less work, cancel the bus at all because all roads on the map have railcrossings! In Electro Berezhino Svetlo even in the West close to Vavilovo, Cherno...
Every big city has at least one!
I mentioned that the wheels of all cars are like in game 10 cm in the ground. Like driving in water!
I dont blame anyone, but specially for the roleplay dudes on friendly server, if the busdriver cannot drive a bus on the map,
there will be no busdrivers!
Good luck with fixing this.
Peace Pokaa23.