Changing road lanes is easy, but can you do it while not pissing off the other cars? First always stay on your lane. Pay attention and go straight. Sometimes drivers don't notice that their car is not going straight. Now with the basics. Use your signal lights, you need to inform cars around you what you are planning to do. Its like being in a team. You have to communicate with your teammates in order to win, in this case going to the other lane. But using your signal lights is not enough, you also have to check your side mirrors. You should estimate how fast the car on your side mirror is traveling. One mistake is some drivers look at the mirror and see a car so far behind so they make the turn but surprised that the car is beside them already when taking the turn. So take into consideration After signaling and checking side mirror you can make your turn. But the rear of your car should always be few meters away from the other car. Take for example the image. Car A is changing lanes, when car A turns, there was no space between its rear and the front of Car B. This causes Car B to stop or reduce speed abruptly and in turn pissing him off. The correct way is to have clearance. The reason is to give the other car time to react on your actions.
Having done the clearance, you should also look at what's ahead. You cannot change lanes then suddenly stop. That would also cause the car behind to stop abruptly. So make sure that the cars in front of the lane you are changing to is either far away or is moving at a constant speed.
