Transition from COPTTM to GTTM – Embracing a Risk-Based Approach
Presented by Andrew Fergus, GHD and Ryan Cooney, Waka Kotahi
22 May 2025
This presentation explores the transition from the Code of Practice for Temporary Traffic Management (COPTTM) to the new Guidelines for Temporary Traffic Management (GTTM) in New Zealand.
The shift represents a significant change in how temporary traffic management (TTM) is planned and delivered, moving from a prescriptive, rules-based framework to a flexible, outcomes-focused and risk-based approach. The GTTM introduces principles that prioritise the safety of all road users and workers while enabling innovation and practicality in TTM design.
This includes a greater focus on assessing site-specific risks, tailoring responses to the actual level of risk present, and engaging earlier in the planning process. The change aligns with international best practices and aims to deliver safer, more efficient, and more adaptable TTM solutions.
Key topics include:
The reasons for the change and limitations of COPTTM
Core principles of the GTTM framework
Understanding and applying the risk-based approach
The role of the TTM planner and decision-making hierarchy
Early lessons learned from GTTM implementation and industry feedback
Attendees will gain an understanding of how this change impacts project planning, design, and delivery, and what is required to ensure compliance and improve outcomes. The session aims to support practitioners, road controlling authorities, and contractors in navigating the transition and applying the GTTM principles confidently and effectively.
Ryan Cooney Bio
Ryan Cooney serves as the Programme Director for Road Worker Safety at Waka Kotahi NZ Transport Agency. In this role, he leads initiatives aimed at enhancing the safety of road workers and the public through a risk-based approach to temporary traffic management, aligning with New Zealand's Road to Zero strategy.
With over 25 years in the transport sector, Cooney's experience spans planning, design, and construction. He has held leadership positions at both regional and national levels, including establishing the Christchurch Transport Operations Centre following the 2011 Canterbury Earthquakes and spearheading the exploration of a national Autonomous Vehicle Testing facility. i
Beyond his primary role, Cooney contributes to industry advancement as the Secretary of the Temporary Traffic Management Industry Steering Group (TTM-ISG). He leads the Commercial (Procurement) workstream and participates in the Good Practice workstream, focusing on transitioning the sector to more effective, risk-based traffic management practices.
Ryan holds a Master of Engineering in Transport from the University of Canterbury and is based in Christchurch, New Zealand.
Andrew Fergus Bio
Andrew Fergus is a highly experienced Traffic Engineer and Project Director with over 16 years of industry experience, specialising in Road Safety and Temporary Traffic Management (TTM). He has led more than 50 major transport infrastructure projects across New Zealand and Australia, with a strong focus on delivering safe and effective outcomes for all road users.
Andrew has been at the forefront of road safety auditing and the implementation of safety improvements on high-risk corridors. His work spans local roads, state highways, and complex environments such as airports and urban centres. He has been actively involved in the transition to the new Guidelines for Temporary Traffic Management (GTTM), helping clients and contractors understand and apply the principles of a risk-based approach.
Known for his pragmatic, safety-first mindset, Andrew is trusted by road controlling authorities, councils, and private clients alike. He is part of a diverse team of transport professionals in Christchurch and is passionate about improving safety outcomes through collaboration, innovation, and continuous learning.