A Roadblock is when police vehicles are parked in a line across the road to prevent the player from continuing the pursuit. Roadblocks appear in Heat Levels 2 through 5.
Players can ram through roadblocks using the Juggernaut powerup or hitting the rear end (the back) of the police car since it is much lighter than the front half. Many roadblocks can be dodged through a gap between a road block and a wall.
Shortcuts are a good way to avoid roadblocks because roadblocks do not block these paths off.