It's always nice to be in the front row on a red light.
It's nice to run a yellow light.
It's not so nice to run a red when a police car is facing the other direction.
It's a nice feeling to be the fastest one to accelerate when the light turns green
It's not so nice after waiting for the ligth to turn green, the light ahead of you turns red.
It's nice to see a nice car on the road (Viper, BMW 6, Porche...)