Motorcycle Roadworthy and Mudguards

Keeping it Clean and Safe: Mudguard Regulations for Motorcycles at Ausmec Mobile RWC & Mechanics

At Ausmec Mobile RWC & Mechanics, we understand the importance of responsible motorcycle operation. Proper mudguards play a crucial role in minimizing road spray and debris thrown up by your wheels, protecting other motorists and enhancing overall safety. Here's a breakdown of key Queensland Department of Transport and Main Roads (TMR) regulations ( regarding mudguards on motorcycles:

Universal Mudguard Requirement:

  • All Wheels: With some exceptions, all motorcycles must have a mudguard fitted to each wheel, including any sidecar wheel. The only exception is if the motorcycle's body design itself acts as an effective mudguard.

Mudguard Coverage and Functionality:

  • Matching Wheel and Tyre Width: Each mudguard must be at least as wide as the corresponding wheel and tyre across its entire length. This ensures proper coverage and minimizes spray.
  • Protection for Other Road Users: The primary function of mudguards is to protect other road users from stones, mud, ice, snow, and water kicked up by your motorcycle's wheels. By minimizing debris spray, mudguards contribute to safer road conditions for everyone.

ADR 42 Compliance for Newer Motorcycles:

  • Applicable Motorcycles: Motorcycles manufactured after July 1, 1988, must have mudguards that comply with Australian Design Rule (ADR) 42 regulations. ADR 42 outlines specific performance and safety standards for mudguards.

Specific Requirements for ADR 42 Compliant Mudguards:

  • Front Wheel Mudguard: The front mudguard must extend rearwards from a point directly above the wheel's center. The minimum acceptable end point is either no higher than the wheel's center or a point where the motorcycle's frame or other structural components (when loaded with 45 kg) provide sufficient protection.

Illustration showing coverage range of the front wheel mudguard

  • Rear Wheel Mudguard: While recent updates to ADR 42 no longer mandate a specific rear mudguard angle (previously 45 degrees), there are still important considerations:

    • Continued Protection: The rear mudguard must still effectively protect other road users from debris and water spray as much as possible.
    • Compliance with Other Regulations: Even with a shorter mudguard, all brake lights, taillights, and the number plate light must be positioned according to current ADRs.
    • Number Plate Visibility: The number plate must remain clearly visible from 20 meters within a specific range:
      • 45 degrees horizontally to the rear
      • 45 degrees upwards from horizontal
      • 45 degrees to each side of the motorcycle

How Ausmec Mobile RWC & Mechanics Can Help:

Our team of experienced mechanics can assist you with various aspects of your motorcycle's mudguards:

  • Mudguard Inspection: During your motorcycle service, we will thoroughly inspect your mudguards for damage, wear, and proper coverage area.
  • Mudguard Repair or Replacement: If your mudguard is damaged or doesn't meet ADR 42 requirements, we can assess the possibility of repair or recommend a suitable replacement mudguard that complies with regulations.
  • ADR 42 Compliance Assessment: We can evaluate your motorcycle's mudguards, particularly for rear mudguards on newer models, to ensure they meet all the requirements outlined above, even with a shorter design.

Ride Responsibly, Stay Clean:

At Ausmec Mobile RWC & Mechanics, we promote responsible motorcycle ownership. Properly functioning mudguards not only protect other road users but also demonstrate your commitment to safe and considerate riding. Let our team help you ensure your motorcycle's mudguards comply with regulations and keep the roads clean for everyone.

Contact us today to schedule your motorcycle service or discuss your mudguard needs!

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