How to avoid accidents
(some of them at least)
This is something you'll learn when you drive IRL (At least in the UK). Mirrors, Signals, Maneuver.
That means, when you want to do anything, you should follow that. For example; You want to turn right off a road:
Firstly, you should check your mirrors for traffic behind you that you might be stopping in front of. (Mirrors)
Secondly, turn on your indicator and let it run for a little. (Signal)
Finally, maneuver; Start to slow down and make your maneuver, in this case, turning right. (Maneuver)
When travelling down a highway/interstate, if you see someone coming down the on-ramp, switch lanes so they can join the outer lane.
A lot of people do not check their mirrors when joining a highway/interstate, although they should do that, you should also be giving way to them whenever possible.
If you see someone trying to turn a corner in front of you, sit back a bit so their trailer can move more freely.
If you get too close to the junction, it makes taking the corner a lot more difficult for the other person and also risks them crashing into you.
On single-lane roads if you are travelling with the wall to your left, you should pull over to the right to allow oncoming traffic to pass. Flash your lights at them to signal them to continue on.
This is just a suggestion I have found, if the traffic with the wall on their right tries to pull over then they are usually off-roading, which is not a good idea.
This tip is specific to the multiplayer mod; When entering any depo, do not barge through the gate if someone is there, a lot of the no-collision zones start/end right on the gate - You will crash and cause damage to them/you, be patient.
Know who has right of way at an intersection.
If you are attempting to cross a junction, for example, turn left and cross oncoming traffic then you do not have right of way, the traffic coming straight does.
If you attempt to race across the road in front of traffic travelling straight, then it can end badly for you and them.
Keep a safe distance between you and the vehicle in front.
If the vehicle in front suddenly stops, you need space to stop behind them. Consider that if you are hauling a trailer and they are not, they will stop a lot quicker than you.
Don't forget to check the position of your trailer.
When you are on windy roads, your trailer can easily start cutting across the other lane; This can quickly cause accidents. Always check your position.
I'll try to update this guide with other tips I find. The main thing to do is to use common sense.
Good luck, and happy trucking!
(Sorry for any typos, I will attempt to fix any and also add images at a later time)