2021 Time Trial Rules

2021 will see the kick-off of a Lone Star Chapter Time Trial run group as part of our May 29th & 30th HPDE Event.  Time Trial is a supplement available for our Advanced students and Instructors which will run in a separate run group with transponders attached to each car for live lap timing.  Information below will assist you in determining which sub-group your car is classified in.

Excel file can be downloaded and used to calculate your vehicle’s class via this link:

https://dl.motorsportreg.com/5ca534d3-c033-46ac-a981-ee78c5339cf5/