Renewal of ISA Tree Risk Assessment Qualification (TRAQ)


The ISA Tree Risk Assessment Qualification (TRAQ) programme provides an opportunity for professionals in the arboriculture industry to expand their knowledge on the fundamentals of tree risk assessment. This qualification promotes the safety of people and property by providing a standardised and systematic process of assessing tree risk. The results of a tree risk assessment can help tree owners and risk managers make informed decisions to enhance tree benefits, health and longevity.

The Tree Risk Assessment Qualification Renewal course is a one-day refresher, with five hours of instruction, and a three-hour assessment. Current TRAQ holders can complete the abbreviated course as early as fours years into their qualification. 

Tree Biology and Mechanics:
Participants will learn how to assess wood structure, decay and tree mechanics, and evaluate how likely these wood structure, decay and tree mechanics would lead to tree or tree part failure. Participants will also learn how to identify and assess defects and conditions that may affect the likelihood of failure.

Tree Inspection and Assessment:
Participants will learn about the types of targets, assess the likelihood of a tree or tree part impacting a target and estimate the consequences of tree or tree part failure. Participants will also learn how to assess the site factors that may influence the likelihood of a failure.

Data Analysis and Risk Categorisation:
After learning the tree and target factors, participants will derive a risk rating by combining information - likelihood of a failure, likelihood of impact, and consequences of the failure. This rating helps the assessor to communicate tree risk to clients and risk managers and allows for comparison between trees.

Risk Reporting:
Participants will learn how to communicate tree risk to clients, in both written and verbal reports. Participants will also learn about the key components that should be included in a report after a tree risk assessment is completed.

To be able to register for the TRAQ Renewal course, applicants must hold a TRAQ credential. 


  • Lecture/Classroom Based
  • Site Visits/Field Study
  • Assessments/Exams

TRAQ Holders

Donald Lee Picker is an ISA Certified Arborist, Climber Specialist, Utility Specialist and ISA Qualified Tree Risk Assessor and TRAQ trainer with over 25 years of experience in the arboriculture industry. He co-founded the Institute of Arboriculture Studies (HK) and is the Managing Director of Asia tree Preservation, Ltd. 


Professional Certification CEUs/CPDs
ISA Certified Arborist 5
Certified Practising Horticulturist Pending

Awarded points may differ for different sessions. Please refer to the latest course mailer or contact us for more information. 


Course Fees (Inclusive of GST)
Full fee $631.30

Fees include the provision of training, assessment materials, tools and equipment and refreshment. Terms and conditions apply.

Please fill in the registration form (download here) and e-mail to before registration deadline, 3 August 2018. 
*CUGE course confirmation e-mail will be sent to all participants who have registered successfully.

Registration is on a first-come-first-served basis. 

Payment of course fee shall be made in full by bank transfer (NETS/ATM/GIRO/Internet Banking) to "National Parks Board". Cash/cheque payment will NOT be accepted. Payment should only be made after CUGE has sent you a confirmation e-mail. 

Mr Kyde Yong
Tel: 6465 0219

All information are correct as of the posted date. For more information, please contact us at