Sound Control Standards and Procedures
Rocky Mountain Solo Series

The competitor shall carry sole responsibility for ensuring their vehicle complies with these Sound Control Standards and Procedures.

Vehicle sound emission is not a constant factor that can be trimmed to barely legal (in the manner of engine displacement or vehicle weight). Since sound emissions may vary significantly from morning to afternoon and day to day, competitors are advised to target any vehicle sound emission level "adjustments" to well under the penalty level to allow for variations in conditions.

The intent of the following rules is to truly make our events quieter by limiting the sound level produced by individual vehicles. Competitors are expected to use mufflers as the primary method for sound reduction. Sound measuring stations may be located on both sides of the course lane, to ensure sound output levels are below penalty levels.

Standards:

Measurement:

Sound Station(s)

Violations: