A NSW Government website

Tunnel Air Quality

ACTAQ Research on NO2, GRAL and CO2

Advisory Committee on Tunnel Air Quality supporting reports from February 2016 - April 2018 on NO2, Optimisation of the application of GRAL in the Australian context, CO2 and Comment on Australian Government Vehicle Emissions Discussion Paper are available on this page.

Review of Ambient Monitoring Data from Two Sydney Road Tunnels (M5 East and Cross-City - Final Report

June 2019
April 2018

Optimisation of the application of GRAL in the Australian context data and peer review

January 2018

Optimisation of the application of GRAL in the Australian context Final Report

November 2017

Review of In-Cabin Carbon Dioxide Levels

September 2017

Comment on Australian Government Vehicle Emissions Discussion Paper

April 2016

In-tunnel air quality (nitrogen dioxide) policy

February 2016

NO2 Policy technical paper - A review and analysis of primary nitrogen dioxide emissions from road vehicles in Sydney

April 2015

NO2 Policy technical paper - Review of experimental studies of exposures to nitrogen dioxide

April 2015

NO2 Policy technical paper  - Road tunnels: reductions in nitrogen dioxide concentrations in-cabin using vehicle ventilation systems

February 2016