They increase safety in the short-term. As the number of automobiles goes up, they become more dangerous. Essentially,
safety = mass of your car / average mass of collisionable vehicles + C, where C is a constant that describes how safe the car would be driving the road alone
The safest world is one where you have a tank and everybody else walks.
safety = mass of your car / average mass of collisionable vehicles + C, where C is a constant that describes how safe the car would be driving the road alone
The safest world is one where you have a tank and everybody else walks.