Access Trials

What is an Access Trial?

An access trial is a temporary access arrangement generally linked with specific access conditions that enables Main Roads to assess any areas of potential concern to stakeholders.  Access trials are occasionally offered to transport operators, provided they can meet the specific eligibility requirements relating to the trial. 
Access trials are generally conducted to assess the safety and effectiveness of new technologies, non-standard vehicle designs and access conditions.   It is also an effective way to validate theoretical results that have been provided to Main Roads in studies and reports. 

What's in it for me?

Access trials generally provide participating transport operators with improved access and efficiency benefits during the trial period.  If the outcome of an access trial is successful, the access arrangements will likely become permanent.

Current Access Trials 

AB-triple 36.5m Roelands Hill Trial

The AB- triple 36.5m Roelands Hill Trial Permit allows (RAV) Category 7 (A) AB-triple combinations, with a tri axle dolly and tri axle trailers, operating up to AMMS Level 3 concessional mass limits, access on Roelands Hill.  The main purpose of the trial is to validate braking temperature results provided as part of the Assessment of Steep Gradients for 36.5 metre RAV Access Report, conducted by the Australian Road Research Board (ARRB) in 2016. 
Eligibility to Participate in this trial is subject to the following conditions;
  • All vehicles must be installed with a Transport Certification Australia (TCA) type-approved telematics in-vehicle unit, which can support the application of Hill Descent Monitoring (HDM) (a telematics safety application through the National Telematics Framework used to monitor vehicles operating on steep descents).
  • All vehicles must be enrolled under the application of (HDM) using a TCA Certified Service Provider to ensure all vehicles stop in the heavy vehicle inspection bay at the top of Roelands Hill to check brakes, commence descent in the appropriate low gear and not exceed a maximum speed of 40km/h when descending Roelands Hill. These actions are essential to minimise braking temperatures and risk of brake failure.
  • All vehicles must be fitted with and utilise an auxiliary braking system when descending Roelands Hill.  Drivers must be familiar with the operation of the particular auxiliary braking system. This is also essential to minimise service brake temperatures and risk of brake failure.
  • The prime mover in the participating vehicle combination must be fitted with an Antilock Braking Systems (ABS) or Electronic Braking System (EBS).
  • The trailers in the participating vehicle combination must be fitted with a Trailer Electronic Braking System (TEBS) with a Rollover Stability System (RSS); this will ensure improved braking performance and stability under braking. 
  • One forward facing camera and one rear facing camera must be mounted on the prime mover.  The rear facing camera must be positioned on the driver's side of the prime mover. This will assist Main Roads to identify the cause of any incidents that may occur and monitor the impact on other traffic.
  • Vehicles will be restricted to travel in the left hand lane, unless they are required to overtake a slower moving vehicle to avoid overuse of the service brake.
  • The operator must participate in brake temperature testing and ensure drivers are cooperative during the testing. This will only occur on occasion and will only delay the vehicle for a short time. This is an essential part of the trial required to validate simulated braking temperature results.

For more information about the trial and eligibility to participate please see the FAQs below.

 Transport operators who wish to participate in the trial are required to complete the AB- triple (36.5m) Roelands Hill Trial Permit Application Form below.


Further information regarding the Hill Descent Monitoring (HDM) application can be found on the TCA Website.   


Modified: 17 May 2019