Bump and Run

Bump and Run is a racing technique where a driver intentionally makes light contact with the rear of the car ahead to create a passing opportunity.

This maneuver is most commonly seen in NASCAR and other stock car racing series. The trailing driver gently taps the rear bumper of the leading car, which can cause the front car to lose traction momentarily or force the driver to slow down to regain control.

The bump and run works because the light contact disrupts the lead car's momentum and stability. When the rear car makes contact, it can cause the front car to slide slightly or require steering corrections. This gives the trailing driver a chance to pull alongside and complete the pass, often before entering the next turn.

This technique is particularly effective on short tracks where passing opportunities are limited due to narrow racing grooves. Drivers often save this move for crucial moments, especially late in races when track position is critical for winning or advancing in championship standings.

The bump and run requires precise timing and a gentle touch. Too aggressive of a bump can send both cars spinning, potentially causing dangerous multi-car accidents. Successful execution demands skill and experience to judge exactly how much contact is needed.

While legal in NASCAR racing, the bump and run remains controversial among drivers and fans. Some view it as a legitimate racing strategy, while others consider it unsportsmanlike or dangerous. NASCAR's "rubbing is racing" philosophy generally accepts this level of contact as part of competitive racing.

Stock cars are specifically built to withstand this type of contact, with reinforced bumpers and safety features that make bump and run tactics more feasible than in other racing series like Formula 1, where cars are more fragile and contact is heavily penalized.