SAB | Mobile Roadworthy Certificate | Brisbane

SAB Safety Certificates Logo

Control arms Defined: Explanation and Key Concepts


Control arms play a pivotal role in ensuring the safety and compliance of your vehicle during roadworthy certificate assessments. This guide explores the significance of control arms in the context of vehicle inspections, shedding light on their common use and importance.


Control arms, also known as A-arms or wishbones, are crucial components of a vehicle’s suspension system. In the realm of roadworthy certificates, these arms are integral to maintaining proper wheel alignment, steering, and overall stability.

Key Features or Components:

Explore the anatomy of control arms, detailing components such as bushings, ball joints, and attachment points. Understanding these features is essential for comprehending their role in the roadworthiness of a vehicle.

Importance in Roadworthy Certificates:

Discover why control arms are indispensable in obtaining a roadworthy certificate. From ensuring optimal handling to contributing to overall vehicle safety, grasp the vital role these components play in compliance assessments.

Inspection Criteria:

Delve into the specific criteria inspectors consider when evaluating control arms. From assessing wear and tear to checking for proper attachment, learn the key factors that influence their pass or fail status.

Common Issues and Failures:

Highlight common problems associated with control arms that may lead to roadworthy certificate failures. Addressing issues like bushing deterioration or ball joint wear is crucial for a successful inspection.

Maintenance and Repairs:

Equip vehicle owners with tips on maintaining and repairing control arms. Proactive measures can extend the lifespan of these components, ensuring a smoother roadworthy certificate process.

Regulations and Standards:

Navigate through the regulatory landscape surrounding control arms in the context of roadworthy certificates. Stay informed about specific standards and requirements set by relevant authorities.

Examples and Illustrations:

Control arms Defined: Explanation and Key Concepts