Helemt Use: Required by law under age 18 Eye Protection: Not Required Daytime use of headlight: Modulating headlight permitted Muffler: Muffler required. No specific acoustical data (dB limit) cited in statute. Handelbar Height: Handgrips below shoulder height - Maximum of 15" above seat - Required by inspection regulations Lane Spliting: Motorcycles, motor-driven cycles, or all-terrain type I vehicles, Operation on public highways. (1) (a) A motorcycle or a motor-driven cycle is entitled to full use of a lane. (b) A person may not operate a motor vehicle in a manner that deprives a motor More Motorcycle Laws