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Standard safety intervention toolkit

Published: | Category: Manuals , Safety management systems | Audiences: Road controlling authorities, Road traffic engineers & consultants, Roading contractors

The Standard Safety Intervention toolkit provides guidance for road safety practitioners on the effectiveness and value-for-money cost range of proven safety interventions to reduce the number of people killed and seriously injured on Aotearoa roads.

Publication details

  • Author:
  • Published: 13 September 2021
  • Version: 2
  • ISBN/ISSN: NZBN: 9429041910085


The toolkit is used to help guide infrastructure investment decisions and contributes to embedding Vision Zero in the wider road safety sector. It also supports streamlined delivery of the Road to Zero Speed and Infrastructure programme for Waka Kotahi and local authorities. 

It is relevant to both state highway and local authority networks.

The toolkit is a ‘living’ document. It is intended to be maintained and updated regularly, so new standard safety interventions can be included.

It provides examples of individual standard safety interventions and, for most treatments, there are technical references provided, some with external links to more information.

Further information to support this section is available in other Waka Kotahi documents such as the High-risk rural roads guide and High-risk intersections guide.

The toolkit is not intended to replace any Waka Kotahi or Austroad’s road safety publications as a source of in-depth technical information.

All funding applications for standard safety interventions are required to be applied for using the Streamlined investment pathway application form.

December 2022 Waka Kotahi investment policy update 

Please note when using the Standard Safety Intervention (SSI) Toolkit and streamlined investment pathway, the Waka Kotahi board has approved the following changes:

  • the cost threshold has moved from the upper limit of $50m to $150m
  • the delegated authority has been moved from the Waka Kotahi Board to the Chief Executive to approve programmes of standard safety interventions up to a value of $150 million, from $50 million. 

This will enable SSI funding decisions of this higher value to be made more quickly and SSIs to be delivered more efficiently, SSIs will continue to be assessed and endorsed through existing management and governance processes. 

The Standard Safety Intervention Toolkit is anticipated to be updated to reflect this change early in 2023.

Related information

Download toolkit and application form

Standard safety intervention toolkit [PDF, 977 KB]

Streamlined investment pathway application form [DOCX, 513 KB]