Vehicle Design
Steering Geometry
Last Updated: March 30, 2026Steering must permit a turning circle diameter of less than 50 feet. Reliable action is required without looseness or binding. Use of Ackermann Angle is recommended to reduce tire wear and rolling resistance.
Tires and Ground Clearance
Last Updated: March 30, 2026Tires must be pneumatic. Minimum ground clearance is tested by the vehicle’s ability to roll over a 121”×121” block to ensure the chassis doesn’t slide if tires fail.+1
Driver Safety Harness
Last Updated: March 30, 2026All vehicles must use a five-point automotive seat belt system. Belts must be secured to the frame with mechanical fasteners. The harness must be strong enough to lift the entire vehicle with the driver and batteries inside.+2
Electrical Safety
Last Updated: March 30, 2026Isolation Switch: A “kill switch” is required and must be accessible to both the driver and race officials. The external actuator must be marked with a red triangle at least 4 inches on each side. Fuses/breakers must be sized to protect the wiring.
Battery Weight & Types
Last Updated: March 30, 2026Total battery weight cannot exceed 73 pounds. Only sealed lead-acid (Gel or AGM) batteries are permitted for Standard Class to prevent leaks. Custom or modified batteries are strictly prohibited.+2
Brake Requirements
Last Updated: March 30, 2026At least two wheels on the same axle must have brakes. The system must use separate actuation cables. The vehicle must demonstrate a straight stop from 25 MPH in less than 40 feet.+2
Roll Bar Specifications
Last Updated: March 30, 2026The roll bar must protect the driver’s head in a rollover. It must be triangulated with at least three legs or a panel equivalent. The driver’s helmet must remain below a line drawn from the top of the roll bar to the front structural point.+2
Vehicle Dimensions
Last Updated: March 30, 2026Maximum Width: 4 feet at the widest point. Maximum Length: 12 feet. Minimum Track: At least one axle must have a 2-foot center-to-center tire distance.+2
