NZ Arb hosted
ISA TRAQ Courses


NZ Arb hosted TRAQ Course

NZ Arb, in association with the ISA, presents the TRAQ (Tree Risk Assessment Qualification) training course.

NZ Arb expects to run its 3-day TRAQ course at least once a year in the near future in different centres around NZ. If you are interested in attending a TRAQ course please email 

Next TRAQ Course

26 - 28 October 2021, Wellington (registrations close 15 September)

More information click here

Register here

About TRAQ

The Tree Risk Assessment Qualification (TRAQ) is owned and developed by the International Society of Arboriculture (ISA).

The program expands your fundamental knowledge of tree risk assessment by learning a standardised, systematic process for assessing tree risk. You will be able to provide information to decision-makers and tree owners to foster informed decisions that promote the safety of people and property and enhance tree benefits, health, and longevity. You will learn strategies to systematically identify and assess tree risk.

This internationally recognised qualification course comprises of a two-day education course followed by a ½ day assessment (2.5 days in total) that includes both a written and field component.  The course prepares the participant to take the TRAQ assessment to become ISA Tree Risk Assessment Qualified. It is required you attend the course and successfully complete the assessment in order to receive the ISA Tree Risk Assessment Qualification.

Course Content

Tree Biology and Mechanics:

Participants will learn how to assess wood structure, decay, tree mechanics, and evaluate their impact on the likelihood of 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 types of targets, assess the likelihood of a tree or tree part impacting the target, and estimate the consequences of tree or tree part failure. Participants will also learn how to assess site factors that may influence likelihood of failure.

Data Analysis and Risk Categorisation

After learning the tree and target factors that must be assessed, participants will combine likelihood of failure, likelihood of impact, consequences of failure to derive risk rating. This rating helps the assessor communicate tree risk to clients and risk managers and allows comparison risk levels between trees.

Risk Reporting

Participants will learn skills for clearly communicating tree risk to clients, both in written and verbal reports. Participants will also learn about the key components that should be included in a report after completing a tree risk assessment.

All trainees must have either

TRAQ Fees*

  • ISA Member: $850 NZD plus GST

  • Non-ISA Member: $930 NZD plus GST

*Course registration fee includes workshop, the Tree Risk Assessment manual and TRAQ workbook, along with lunch and tea breaks during the two and a half-day training.

NZ Arb hosted TRAQ Renewal Course

Those who took the full Tree Risk Assessment Qualification (TRAQ) course when it was first launched in 2013 will be reaching their five-year expiration dates within the next year.  All TRAQ holders who took the full TRAQ course will be required to pass the TRAQ Re-certification Course to maintain their credentials for another five years. 


The Tree Risk Assessment Re-certification Course is a one-day refresher, with five hours of instruction, and three hours of taking the exam. 

Course Eligibility

Course Eligibility: To be able to register for the TRAQ Re-certification Course you must hold a TRAQ credential. You may complete the TRAQ Re-certification Course as early as one year prior to your qualification expiration date. Participants are asked to bring their TRAQ Risk Assessment manual and clipboard to training.


  • ISA members: $480 plus GST

  • ISA non-members: $550 plus GST