The 2010 SPL RadicalX Rules can either be downloaded by clicking on the link below, or, if you have Adobe Acrobat Reader installed, you can view the rules on this page by scrolling down to the viewer below.

2010 RadicalX Rules, page 16

1. Vehicle must be capable of driving through the judging lanes safely.
2. It is intended that a person of average size will be able to fit in the front compartment.
3. The height of a center console must remain parallel or below the top of the dashboard.
4. An open area must remain between the top of a center console and/or the dashboard to the roof. A headliner or ceiling, if used, may not be built out more than 3” past the bottom of the top of the door jamb. Bracing system, described in A.5, is allowed to be within this space.
5. No more than 6” in total cross-sectional width bracing allowed.
6. Windshield may be replaced with clear acrylic or other appropriate material, and must have at least 500 square inches of unobstructed viewing area.
7. Side windows may be replaced with clear acrylic or other appropriate material, and must have at least 200 square inches of unobstructed viewing area per window. If the passenger window is replaced and the passenger door is not able to be opened, a 1” hole, with a stopper, is required for the sensor cable to pass through.
8. Foot pedals and shifter may be covered during the pass, but panels must be easily removed after the pass.
9. The top of the dashboard must remain at or below the horizontal plane created by the bottom of the windshield.
10. There must be minimum of 13” of free space between the vertical surfaces of the center console and each door panel surface, right and left sides.
11. If doors are bolted or clamped shut, a remote engine kill switch must be located within easy reach of a Competitor or Judge outside of the vehicle.
12. The minimum floor to ceiling measurement in all areas of the front cabin, forward of the subwoofer enclosure, must maintain a vertical measurement of 30”. The only exceptions will be the area between the roof and the top of the center console, and the area between the roof and the top of the dash. If, when using the 30” measurement rod, it is impeded in the verticle measurement, then the vehicle will be disqualified.
13. The size (air volume) of the passenger compartment may not change during competition. For examples: the subwoofer enclosure may not move forward, airbags may not be deployed, etc.

1. Windows, doors, hoods, hatches, and trunks must be closed during the entire pass.
2. Judges must be afforded a clear and unobstructed view into the vehicle at all times. Window tint, duct tape, etc. are considered obstructions, and not permitted.

1. In addition to the General Rules, sensor placement will be passenger side windshield location; sensor placed 6” from right pillar post and 4” above highest point of the dashboard.
2. No obstructions behind sensor, except seat or headrest.

1. If the enclosure or anything attached to the enclosure extends in front of the B-pillars, then it must be at least 20” behind the closest point of the steering wheel. Any equipment attached to the enclosure is considered part of the enclosure.
2. All audio equipment must be installed within the vehicle and securely mounted, except podiums.
3. Batteries may be mounted externally to the vehicle, but must be properly secured, protected and safe.
4. Fully encapsulated or “caged” alternators located above the hood, in front of the grille, or underneath the vehicle are permitted.