The PIT maneuver (pursuit intervention technique) or TVI (tactical vehicle intervention) is a pursuit tactic by which a pursuing car can force a fleeing car to turn sideways abruptly, causing the driver to lose control and stop. It was developed by the Fairfax County Police Department of Virginia, United States. Other interpretations of the acronym "PIT" include pursuit immobilization technique, precision immobilization technique, push it tough, parallel immobilization technique, and precision intervention tactic. The technique is also known as tactical car intervention, tactical ramming, legal intervention, and fishtailing.