Motorcycle Indicator Spacing: A Simple Guide

Indicator Spacing and Your Motorcycle!

Have you ever looked at a sleek new motorcycle and wondered why the rear indicators are so far apart or why some aftermarket tail tidies look so different from the factory setup. There’s a reason behind it and that is your motorcycle is designed to comply with the Australian Design Rules as well as many other international design rules.
The ADR's are a set of laws that lay out strict design requirements for things such as indicator spacing, and which covers both learner-approved motorcycles (LAMS) and full-power bikes.
Understanding The Australian Design Rules (ADR's) around indicator spacing is key if you are thinking about installing a Tail Tidy, Fender Eliminator or updating your indicators.

Australian law refers to Australian Design Rules (ADR) to set the rules for vehicle lighting. For motorcycle indicators, the relevant rules are:

Front Indicator spacing

  • As per current ADR 19/02 requirements: spaced a minimum of 240 mm apart (see ADR 19/02, clauses 6.3.3.2–6.3.3.4)
  • Measured from the inside edge of one indicator lens, to the inside edge of the opposing lens.
Front indicators also have to be positioned so they are clearly visible alongside the headlight.
 

Rear Indicator spacing

  • As per current ADR 19/02 requirements: a minimum of 180 mm apart (see ADR 19/02, clause 6.3.3.5)
  • Measured from the inside edge of one indicator lens, to the inside edge of the opposing lens.
This spacing is why some integrated tail lights or tiny aftermarket setups may not comply. If your indicators are too close together, your bike could fail inspection or even be illegal to ride on public roads.

Height Requirements

Indicators also have a height requirement: they must be between 350 mm and 1200 mm above the ground (see ADR 19/02, clauses 6.3.3.2 and 6.3.4).
This ensures visibility to other drivers and is especially important at night or in traffic.

What This Means for Tail Tidies

Fender Elminators and Tail Tidies are popular because they streamline the rear of your bike. But not all tail tidies are made with compliance in mind.
If you install one with indicators that are too close together, you could:
 
  • Fail a vehicle inspection
  • Risk a fine for non-compliant lighting
  • Reduce visibility for other road users
 
This is especially relevant with aftermarket indicators, where the stem length of the indicator can vary significantly from one design to another. Even if it looks cool, you must ensure your setup still meets the spacing and visibility requirements in ADR 19/02.

Choosing the Right Indicators and Spacing

When upgrading to aftermarket indicators or installing a tail tidy, spacing often becomes a factor that’s easy to overlook. Many OEM setups are designed around larger factory indicators, so switching to a more compact option can sometimes leave the indicators sitting too close together or interfering with surrounding components.
 
To resolve this, Indicator Spacers can be used to increase the mounting distance, helping to achieve proper clearance while maintaining a balanced, symmetrical appearance. Our range of Indicator Spacers are designed specifically for this purpose, adding additional spacing where required without compromising fitment or finish.
 
For those upgrading their indicators, compact LED options such as our Pixel Mini and Bullet Mini indicators provide a clean, low-profile look while maintaining strong visibility and durability for everyday use.
 
Selecting the right combination of indicators and spacing ensures your setup not only looks right, but functions correctly as well.

Key Takeaways

 

  1. Australian law requires minimum indicator spacing for L‑class bikes.
  2. Rear indicators must be 180–240 mm apart; front indicators 240–300 mm apart.
  3. Indicators must be 350–1200 mm above the ground.
  4. Always check aftermarket tail tidies for compliance, not just style.

 

Disclaimer

This blog post is for general informational purposes only and is not legal advice. Vehicle laws and standards may vary by state or territory. Always consult local authorities or certified compliance inspectors to confirm current requirements before modifying your motorcycle.