1. Preface

Land Transport New Zealand (Land Transport NZ) commissioned Axel Wilke, Traffix, to prepare this booklet. The purpose was to contribute to the objectives of the New Zealand Transport Strategy by improving the efficiency and safety of the network.

Land Transport NZ has been assisting the traffic signal industry to increase its capability in design, construction, operation and maintenance of traffic signal installations. One of the components of this assistance has been to facilitate the development of an audit methodology for existing installations. Land Transport NZ commissioned audits of eight territorial local authorities' installations. Other authorities have commissioned their own audits.

This booklet summarises the findings of the audit reports. Its purpose is to assist and advise practitioners.

The author has reviewed the available audit reports, and selected the common trends and themes. While these are typical, Land Transport NZ and Traffix cannot claim to cover the full range of issues identified in the audit reports. Readers are, therefore, urged to seek specialist advice on particular matters and not rely solely on this booklet.

While every effort has been made to ensure the accuracy of this booklet, it is made available strictly on the basis that anyone relying on it does so at their own risk without any liability to Land Transport NZ or Traffix.

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Page created: 19 June 2008