RallyCross Rules
last revised 06/08/2024


We generally follow SCCA rules except for classing rules. Please lookup the SCCA RallyCross Rules online and message us at rallyx@thscc.com if you have any questions or concerns.

 1.  General Rules
  1.1.    In the case of questions regarding safety, protests, or any issue regarding general rules, the president, RallyCross Vice Presidents, and event chairs will be involved in the decision. They may ask for input from anyone else not involved in the question. If one of them is involved in the issue, they will remove themselves from the discussion. Involved parties will be allowed to offer their input.
  1.2.    If, for some reason, disciplinary action must be taken, all club officers present at the time of the incident will decide upon the correct action. While no fines may be levied, the officers may ask a competitor to leave the present event, may ban them from a number of events, or may request that they never participate again. Except for the first example, a special meeting will be called to more fully discuss the later options. All club officers should attend. Any club officer involved or related to the individual involved will excuse themselves from the meetings. If it is decided that a person be banned from all further events, a letter drafted by the club president will be sent to that person. In the letter will be the details of why this decision was reached. The competitor may ask that this be reviewed yearly.
  1.3.    Event chairs will be responsible for making any decisions or clarifications regarding the running of their specific event. Event chairs, after consulting with the RallyCross Vice Presidents and club President, will determine the number of runs. They will also determine if fun runs will be done.
  1.4.    On event set up days, only event chairs, or drivers selected by event chairs, may run the course. It is desirable that the driver for the safety preruns be someone that is not going to compete in the RallyCross.
  1.5.    No alcohol, drugs or any controlled substance may be consumed during the event. An event starts when the first person arrives on site and ends when the last run is made and the course is picked up.
  1.6.    All people must sign the insurance waiver. This includes all participants, spectators, and crew. Participants are responsible for having their family members, crew, or friends sign the waiver and wear a wristband issued for that event which indicates such. An announcement will be made by the event chairs at the drivers meeting pointing out this rule. It is the responsibility of all participants to prevent anyone without a wristband from entering the course area.
  1.7.    The course may be walked as many times as desired before the drivers meeting. Only walking is allowed. This rule is intended to keep people from riding bikes or such during the walk through.
 2.  Eligibility of Participants  
  2.1. Participants must have a valid drivers license at the time of the event and must be prepared to present such license during registration. Learner's permits are not acceptable.
  2.2.    All participants must be 18 years of age, OR if under age 18, must have a THSCC minor release form signed by a parent or legal guardian. Such form is to be presented and signed off by the President or RallyCross Vice Presidents, then turned into the registrar. A valid drivers license is still required. (Minor release forms are to be kept on file with insurance waiver forms).
  2.3.    THSCC reserves the right to refuse to allow anyone to participate if it is not possible to verify the above qualifications.
  2.4.    Passengers under 12 years of age are not permitted in any runs on course, including fun runs. Any exceptions must be specifically approved by the President, or in his absence, the highest ranking club officer present at the event.
 3.  Safety and Car Preparation  
  3.1. It is the responsibility of the driver to ensure that his/her vehicle is properly prepared and safe for competition.
  3.2.    Speed through the pits will be no more than 10MPH. No tire warming, brake warming, or other high speed maneuvers will be allowed anywhere on the event sight. Pits are defined as starting at the first cone for the course and ending 20' beyond the last car, or its trailer/tow vehicle, entered in the event. Violation of these rules will be grounds for asking a competitor to leave the sight.
  3.3.    All cars must pass technical inspection. If the car has a THSCC annual tech, it does not need to be teched again. In addition to THSCC annual techs, Car Guys and THSCC Time Trial annual techs are acceptable. If the car needs to be teched, inspection will only be done after the driver(s) have registered. Once tech inspection closes, typically 15 minutes before the drivers meeting, cars will be teched as time permits. However, each driver will get the same number of runs as other competitors in class.
  3.4.    Sunroofs must be securely attached to the car or completely removed from the car. Convertible top vehicles must have at minimum a 4-point roll bar meeting SCCA Solo I requirements and must have a hard top attached.
  3.5.    All loose objects must be removed from the car and trunk. Spare tires may be left in if secured.
  3.6.    Helmets and seat belts must be worn on every run by every person in the car. This includes fun runs and runs during set up days.
  3.7.    We highly encourage novice drivers to have an experienced driver ride as a passenger. Novices, please do not hesitate to ask for an experienced driver to ride passenger. The experienced driver will be able to provide pointers and enforce safety-related procedures. Any driver who is registered for the event may also ride as a passenger. Only one passenger may ride in the car at a time, and they must be in the front right passenger seat. It is expressly forbidden by insurance for non participants to ride on a competition run but they can on fun runs.
  3.8.    During runs, drivers and passengers, if any, must keep arms and hands inside the car.
  3.9. Car numbers and class need to be on both sides of the car. If more than one driver, driver is responsible for reporting to the starter the correct class and number.
  3.10. Helmets must be Snell, FIA, or SFI approved and must follow current SCCA Rules, which include the year. For example, here is the approved list for 2023. No DOT-only rated helmets will be allowed.
  3.11. For all intents and purposes, only "cars" are allowed. Due to rollover considerations, the car must be wider than it is tall. SUVs, trucks, vans, ATVs, and UTVs are not allowed.
 4.  Registration  
  4.1.    Registration is only open to THSCC members. Sign up for membership through https://www.motorsportreg.com/orgs/thscc. As of 2023, yearly membership is $12 and lifetime membership is $200.
  4.2.    Individual event registration must be completed and paid using motorsportreg.com. No on-site registration is allowed. Late fees are not applicable.
  4.3.    Drivers may not register for a second set of runs.
  4.4.    SCCA-compliant size and color car numbers and class letters are required at all events. See THSCC Car Classing and Numbering for more details.
  4.5.    Participation will be refused to anyone who has not signed the waiver and who is not wearing a wristband.
 5.  Worker Assignments  
  5.1.    Each driver must work the course. If they can't work the course they can arrange to have someone work it for them. Also, no THSCC points will be awarded to them. They will be awarded a DNW (Did Not Work).
  5.2.    Only competitors entered in the event will be allowed out in the course area. Exceptions may be made by event chairs, RallyCross Vice Presidents, or the President.
 6.  Classes Supported  

The following classes will be supported by THSCC:

  • U2 - Normally-aspirated, 2-wheel-drive vehicles having an engine displacement of 2400cc or less.  
  • O2 - 2-wheel-drive vehicles with forced induction or an engine displacement between 2400cc and 6000cc.  
  • U4 - Normally-aspirated, 4-wheel-drive vehicles having an engine displacement of 2400cc or less.  
  • O4 - 4-wheel drive vehicles with forced induction or an engine displacement between 2400cc and 6000cc.

All competing vehicles will be further classified into one of two class categories:

  • S - Street Tire: For the purposes of this class, a "street tire" is defined as a "summer use" or "all-season" tire from any manufacturer that does not have an knobby or overly aggressive tread pattern, as determined by the Rallycross VP or his designate. Specifically excluded are snow tires, rally tires, mud-terrain or all-terrain tires, and any tire with a knobby tread pattern. See the RallyCross Street Tire Rules for more details. The intent of this definition is to permit any "normal" street tire to be used in competition. However some tires will obviously push this limit, and the Rallycross VP reserves the right to make (or delegate) that determination on a case-by-case basis. Note: many OEM truck and SUV tires will be deemed too aggressive to meet this classification.
  • N - Non-Street Tire: Any tire not fitting the Street Tire definition above.

The complete set of classes, then, is SU2, SO2, SU4, SO4, NU2, NO2, NU4, and NO4.

 7.  Event Scoring 
  7.1.    A car that misses a gate, or passes completely on the wrong side of a course-defining pole marker, will be judged to be Off-Course for the run, unless the car goes back and corrects the mistake. 
  7.2.    A car that has been scored as Off-Course will be given a fixed maximum (bogey) time for the run. The bogey time for each event will be posted and/or announced at the pre-event driver's meeting.
  7.3.    Points are only awarded to a participant that completes at least one run. Off-Course runs do not count as completed runs.
  7.4.    Season points are awarded to THSCC members only and are awarded as:
  • 1st place = 10 points
  • 2nd = 8 points
  • 3rd = 6 points
  • 4th = 5 points
  • 5th = 4 points
  • 6th = 3 points
  • 7th = 2 points
  • 8th = 1 point
No points are awarded for participation only.
  7.5.    Any pole or course-defining marker that is hit, no longer standing upright, or has been completely displaced from its defining box, will count as a 5 second penalty. Poles that are knocked by debris kicked up from the competing vehicle will also count as a 5 second penalty.
  7.6.    A car that starts its run but is unable to complete it will be given a bogey time for that run. A car that takes longer than the bogey time to complete a run will still be given the bogey time. Once a car crosses the start line the run is officially started. In other words, a car that is in the start box, starts to move forward when given the OK by the starter but breaks before crossing the start line has not officially started a run and will not be given a bogey time. Once the car crosses the finish line the run is over. (This last part seems obvious but it is intended to clarify any situation where it is possible to hit the finish line before finishing the course. For instance, miss a turn and wind up unintentionally in the finish box).
  7.7.    If, during a run, a participant sees a pole out of place, he/she must bring the car safely to a stop on course and point out the pole or poles. After this is done and the corner worker acknowledges this, the participant will drive to the finish line as specified in the rerun rule. The participant will be issued a rerun. This rule does not apply to a pole moved by that participant during their run (i.e. on the way out along the same part of the course they come back on).
  7.8.    If a pole or cone is hit by a competitor on the way out on a part of the course that is used again on their way back and has not been reset by a corner worker because of insufficient time between the two passings of the car, no rerun will be issued. In this case, the competitor will drive the line that was originally marked by the pole. No extra pole penalty will be given if the knocked down pole is hit because it is in the line. The reason for this rule is to keep a competitor from gaining an advantage because of a hit pole or cone and to protect the course workers.
  7.9.    For a timer malfunction or other situation resulting in a rerun, the car on course should be red flagged as soon as is safe and possible. The car should proceed at reduced speed in as direct a manner as possible to the finish line without following the course.
  7.10.    A car that is red flagged for a safety issue will be given a rerun. Safety should always be the prime consideration by all corner workers. If a competitor's car develops a mechanical problem that may cause a safety problem, even if the car is capable of finishing the run, they should be red flagged. Because the red flag was for a safety problem and NOT the mechanical problem, the competitor will get the rerun.
  7.11.    Anyone damaging the timing equipment or hitting the large cones by the timing equipment will be given a bogey time for that run and will be responsible for the costs of replacing/repairing the equipment.


For any questions or concerns, contact the RallyCross Vice Presidents at rallyx@thscc.com.