Deadly Drivers are NPC drivers throughout the Grand Theft Auto franchise that drive very fast and carelessly, often crashing into buildings, pedestrians, or other vehicles, sometimes resulting in injury, or even death of the player.
These drivers are similar to the ones in GTA San Andreas. Even though they are much rarer, they are just as dangerous. They frequently crash into other vehicles and drive, as if they are oblivious to other cars or pedestrians. These deadly drivers may also run over the player, and trap him under their car involuntarily. When the player gets into a taxi and asks the driver to hurry, the player can witness him running over civilians, hitting other cars, crashing and sometimes even breaking the car to the point of an explosion. It is unknown what causes this happening, but it could be that Rockstar programmed this to make the game look more realistic, but it also could be a simple glitch.