Sound Levels: 103dbA sound limit is in effect at all Thunderhill events between the hours of 9:00 a.m. and 5 p.m. Sound levels before 9:00 am and after 5:00 pm must not exceed 95 dbA. No race engines may be started at Thunderhill before 7:30 a.m. nor operate after 6:00 p.m.

Tech Inspection: Participants must present their completed Pre-Event Tech Form or Vehicle Logbook (with annual inspection) and your helmet to the Tech Inspectors for approval. Download the Tech form here: https://cdn.connectsites.net/user_files/timetrials/downloads/000/043/136/2023_TTNT_Tech_Sheet.pdf?1681156884 .

Vehicles with a standard SCCA Club Racing Vehicle Log book or SCCA Time Trials Vehicle log book with notification of Annual Tech or a minimum technical inspection will be considered as adequate for Tech Inspection.

Link to Supplementary Regulations: https://www.renoscca.org/documents/trials/2025%20reno%20td_tt%20supps.pdf

TRACK DAY (TD) SPECIAL INSTRUCTIONS: Reno SCCA Track Day provides an environment for drivers who simply want to increase the enjoyment of driving their vehicle. For most drivers, all it takes to be a part is your safe street car, a valid driver's license, and an approved helmet. TD is for drivers that wish to learn to drive at speed on a closed course and participate in performance driving on-track. Coaching is required in TD GREEN (NG) and available on request in TD BLUE (EG). Timed competition is not allowed. TD will be run on any SCCA approved course configuration at the discretion of event organizers. TE drivers will be offered a minimum of four 20-minute sessions. Entrants will be placed in groups based on experience level at the discretion of the Event Lead and/or Chief Driver Coach.

Passing Rules:

Passing is not allowed on the ‘out lap’ prior to Start/Finish.
Passing will be allowed in designated passing zones with a point-by at the discretion of the Chief Driver Coach and communicated at the Driver’s Meeting.
Passing rules may vary by group and driver experience level.

Track Day Driver Requirements: Drivers who wish to compete in an SCCA Track Event must meet the below requirements.

Have a current Weekend or Full Membership of the SCCA.
Have a valid government-issued driver’s license.
Any driver that has the legal authority (license/permit) to operate an automobile on a public road may participate in a Track Event, as long as all restrictions of the driving license are met. If those restrictions require a passenger, that passenger must be an event Driver Coach assigned by the Chief Driving Coach.
Physically disabled drivers may use alternate vehicle controls and preparation items appropriate for the nature of their disability. In the case of a driver using alternate controls, extra care should be taken to ensure that the driver does have adequate control of the vehicle and that the control mechanisms can withstand competition use.
A Participation Log is required and is available at registration for no-charge. TT Novice Permit or Competition License holders, or alternate license holders are not required to have a Participation Log.

Track Day Vehicle Eligibility:

Must meet Safety Level 1 Standards, and when necessary, the SCCA rules required for special construction (GT, Sports Racers, Formula Cars, Specials etc.).
Has at least four (4) wheels, grouped in equal sets of half of the wheels on the vehicle per side.
Is properly muffled.
Does not have a high center of gravity. Potentially unstable vehicles with a high center of gravity–determined by whether or not they are wider than they are tall–are excluded from SCCA Time Trials. Width is the average track width of the vehicle, and height is measured from the ground to the highest point. Extra caution should be exercised with non-traditional vehicles (e.g., trucks using racing slicks or tires with less than 200 tread wear rating). Is a vintage or alternate series racing car that meets safety specifications for their sanctioning body.
Cars need not be licensed or licensable for road use, so long as they otherwise comply with these rules.

TIME ATTACK (TA) SPECIAL INSTRUCTIONS: TA is a timed competition championship series open to experienced drivers. All Reno Time Attack drivers will be assigned to one of the Time Attack groups (TA1 or TA2). Additional groups may be added at the discretion of event organizers. Each TA group will consist of one Practice/Qualifying and three timed races. Drivers will initially be assigned to one of the groups based upon anticipated lap times. Best lap times from the Practice/Qualifying session will determine group grid order for Time Attack race sessions. (Group assignment and starting order may be altered by the Competition Director). Driver/Entrant may request to start at the back of the group.

Passing Rules:

Passing is not allowed on the pace lap prior to the ‘Green Flag.
Passing is allowed in Time Attack anywhere on course.
Point by is required in turns but may be altered by the Competition Director and communicated at the Driver’s Meeting.

Transponders (AMB TransX 260 or X2) are required on all cars in all Time Attack groups. A limited quantity of transponders are available for rent at Reno Time Trial events and can be reserved during registration on MSR.

Driver Requirements: All Drivers must comply with these SCCA Time Trials Driver Eligibility Rules: https://timetrials.scca.com/pages/driver-eligibility.

Be approved for Reno Track Event Experience Group (EG) or higher.
Hold a valid government-issued driver’s license.
Hold a SCCA Time Trials Competition, SCCA Road Race Novice or Full Competition license.
Hold a competition license from an approved sanctioning body upon verification by the event Registrar.
Be able to handle the physical and mental demands of competition for the length of a session for each session of the event: https://timetrials.scca.com/pages/physical-fitness-requirements

Time Trials Safety and Driver’s Gear Requirements Sports, Tuner, Max and Unlimited Category Safety

Follow this link for complete SCCA Time Trial Level 1, Level 2 and Level 3 Safety requirements: https://timetrials.scca.com/pages/full-safety-rules. Vehicles running in Sport, Tuner, Prepped and Max Category must meet Safety Level 1 Standards or Safety Level 2 Standards. All other classifications must meet Safety Level 3 or GCR Safety Standards

Reno SCCA Time Attack (TA) Vehicle Eligibility: SCCA Time Trials Events are open to any vehicle that:

Meets all of the Safety Level 1 Standards, and when necessary, the SCCA rules required for special construction (GT, Sports Racers, Formula Cars, Specials etc).
Has at least four (4) wheels, grouped in equal sets of half of the wheels on the vehicle per side.
Is properly muffled and meets the track required 103dbA limit..
Does not have a high center of gravity. Potentially unstable vehicles with a high center of gravity–determined by whether or not they are wider than they are tall–are excluded from SCCA Time Trials. Width is the average track width of the vehicle, and height is measured from the ground to the highest point. Extra caution should be exercised with non-traditional vehicles (e.g., trucks using racing slicks or tires with less than 200 tread wear rating).
Is a vintage or alternate series racing car that meets safety specifications for their sanctioning body.
Cars need not be licensed or licensable for road use, so long as they otherwise comply with these rules.
Car Number & Class Designation: All Time Trials (TT) competitors are requested to place car numbers (no more than three digits) and car class designation on both sides of the car. Car numbers should be a minimum of 8” tall with a 1½” stroke and Class Identifiers should be a minimum of 4” tall with a 1” stroke.
Physically disabled drivers may use alternate vehicle controls and preparation items appropriate for the nature of their disability. In the case of a driver using alternate controls, extra care should be taken to ensure that the driver does have adequate control of the vehicle and that the control mechanisms can withstand competition use.
Complies with the Time Trials National or Reno Region Only Vehicle Classification Requirements

RENO REGION SCCA TIME TRIALS VEHICLE CLASIFICATION: Reno Region Time Trials utilizes SCCA National Time Trials Vehicle Classifications as defined below. In addition, non-production or non-production-based vehicles like Sports Racers, Light Weight Specials, Formula Cars, Dwarf Cars, etc that are not eligible to compete in Time Trials National Tour or Time Trials Nationals are allowed in Reno Time Trials provided they meet the requirements spelled out in the Region Only Classes.

National Time Trials Vehicle Classifications

SPORT CATEGORY (S1), (S2), (S3), (S4), (S5) and (S6) https://timetrials.scca.com/pages/sport-category
TUNER CATEGORY (T1), (T2), (T3), (T4) and (T5) https://timetrials.scca.com/pages/tuner-category
MAX CATEGORY (M1), (M2), (M3), (M4) and (M5) https://timetrials.scca.com/pages/max-category
UNLIMITED CATEGORY (U1) and (U2) https://timetrials.scca.com/pages/unlimited-category For any production-based vehicle that exceeds Sport, Tuner or Max Category preparation limits including, but not limited to Road Racing GCR GRAND TOURING (GT), SUPER TOURING (ST), PRODUCTION (EP, FP, HP) Category Classes.

Reno Region Only Vehicle Classifications

TIME TRIAL SPECIAL (TTS): SCCA Road Race. ASR, P1, P2, SRF, SRF3 or any open wheel, sports racer or other vehicle which doesn’t fit into any other class. Vehicles must meet safety requirements for SCCA HillClimb or GCR.
TIME TRIAL PRODUCTION BASED SPEC (TTSP): SCCA Road Race B-Spec, C-Spec, Spec Miata, IT. These Vehicles may also run in Sport, Tuner or Max Category provided preparation limits are not exceeded and 200 or greater tread wear rated tires are installed.
TIME TRIAL VINTAGE

VP1 – Production cars up to 1900cc

VP2 – Production cars 1901cc up to 3200cc

VP3 – Production cars over 3200cc

VFSR – All Formula and Sports Racers (no displacement split)