Editing D20 Chase Rules (section)

===Speed===

Chase speed is measured in miles per hour (MPH), and is determined by terrain at the start of a chase. Chase speed changes throughout the chase according to the maneuvers chosen by the both pilots each round.

Whenever the chase speed exceeds the maximum speed of one or more involved transport at the end of a chase round, the transports in question each take 4 points of damage (reduced to 2 if the driver has the Daredevil ability). This damage is not reduced by the transport's hardness, and is applied in addition to all damage caused by maneuvers, crash checks (and crashes), and other effects.

There are seven steps to chases, which are explained in broad strokes here and then in detail in the following sections. These seven steps continue in cycles until the chase ends - either with the crash or escape of one of the transports.