MRWA Operate Truck Mounted Attenuator (OTMA) Refresher

Course Information
  • Duration 1 Day
  • Class Size 5
  • CTF subsidised price $308
  • Price $556
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MRWA Operate Truck Mounted Attenuator (OTMA) Refresher Course

WTA’s Main Roads WA Operate Truck Mounted Attenuator (OTMA) refresher course is designed to meet MRWA requirements for refresher training and assessment as a part of MRWA OTMA re-accreditation.

This course is also suitable for participants wanting to transfer their TMA accreditation from another state in order to work as a TMA operator in WA.

WTA’s OTMA Refresher course has been designed to update participants’ knowledge relating to the latest changes and requirements for the operation of TMA’s, and to assist participants with the continuous improvement of their skills and furthering of their understanding.

The WTA team are dedicated to providing value to each participant by shedding light on what employers are wanting from TMA drivers, and by providing guidance around how you can apply this in real world.

Main Roads Western Australia (MRWA) stipulate that all traffic management accreditations are to be renewed every 3 years.

Course Outcome

Upon successful completion of the course and meeting all MRWA requirements, participants will be issued with a Main Roads WA Accreditation card and certificate for Operate Truck Mounted Attenuator.


MRWA require those who seek re-accreditation to provide evidence of relevant pre-requisites and demonstrate active engagement in the Traffic Management industry within the previous 12 months.  MRWA require applicants to submit evidence of pre-requisites and active engagement in the industry prior to sitting the refresher course.


Participants must:

  • Have good English language and literacy to read and interpret Traffic Management Plans, Traffic Guidance Schemes and other workplace documents, and be able to complete workplace forms.
  • Hold a valid Work Safe WA Construction Safety Awareness Training (Blue Card) or Construction Induction card (White Card), or equivalent
  • Provide a Statement of Attainment (or USI Transcript) for the unit of competency RIIRTM301D Operate a truck or trailer mounted attenuator (or equivalent)
  • Hold a current and valid heavy vehicle licence of a suitable class to operate the TMA (i.e. a Medium Rigid licence or above)
  • Hold a current Main Roads WA Basic Worksite Traffic Management (BWTM) Accreditation
  • Hold a current Main Roads WA Operate Truck Mounted Attenuator (OTMA) Accreditation (or an equivalent from another State if transferring to WA).
  • Provide documentary evidence of operating TMA’s at three (3) worksites in the last 12 months, performing both set-out and close down of the Traffic Guidance Scheme.

Documentary evidence of experience operating a TMA must include the following:

  • A completed and signed site specific SWMS, JSA or other hazard assessment used on a worksite by the applicant.
  • Details of worksites must include providing the date of work, site location and suburb, description of works, contractor, supervisor name and contact number of the supervisor to be verified.

If sufficient evidence cannot be provided, participants will not be permitted to commence and will be required to undertake the full course in order to renew their MRWA accreditation or transfer from another state. Re-scheduling/transfer fees may apply as outlined within the Student Handbook.

Course Location

See course calendar for available locations


1 day

Course dates

Please see our Course Calendar for scheduled courses or call us at 1300 019 304.

If there are no courses available on the course calendar, or if the dates available are not suitable, please call 1300 019 304 for additional dates.

Course fees

Metropolitan Rate $556 per person

Construction Training Fund (CTF) Subsidy

Metropolitan Rate Subsidy $248 – You pay $308 per person
Note: This subsidy is available to eligible participants only.

The Construction Training Fund provides funding support for training of eligible workers in the construction industry. We acknowledge the support of the Construction Training Fund in reducing the costs of training for eligible workers.

Class times

07:30 – 16:00

Class times may vary slightly based on the location of your course.

Times will be confirmed within your booking confirmation.

Students are asked to arrive at least 15 minutes prior to the scheduled course start time, late attendees may be rejected from the course.

On the day of your course

Students are required to wear appropriate safety clothing to conduct the practical component of the training course.

  • Safety boots (steel caps)
  • Long pants
  • Hi-Vis shirt (if you do not have one WTA will lend you a Hi-Vis vest on the day)
  • PPE suitable for the weather on the day of the course
  • Safety gloves (if you do not have gloves WTA will lend you gloves on the day)

WTA requires that you bring an original copy of your:

  • Current Heavy Vehicle Drivers Licence
  • Construction Safety Awareness (Blue / White) Card
  • MRWA BWTM Accreditation Card
  • A valid Unique student identifier (USI)

How to enrol

Please click here to view and read our Student Handbook.

To secure your spot in any of our courses, you are required to book online, complete payment for the course and return the MRWA OTMA Refresher Pre-requisite form to

Once you have booked into the course online, our team will send you a pre-requisite form which is to be completed and returned along with supporting evidence prior to course commencement.

Please note that WTA will not allow participants to commence this course unless all pre-requisites have been met. For last minute bookings or if all pre-requisite information is not received by WTA at least 4 business days before the course, there will be a delay with processing your certificates and accreditation card.

Once this evidence has been reviewed by WTA staff, you will receive an email confirmation with all of the details for the course.