How do ramp signals affect air quality and do they increase CO2 emissions?
This project aims to lessen congestion as a whole and therefore reduce fuel consumption and CO2 emissions overall. Specialists have advised that there will be some improvements in local air quality because of the project. Any measure that serves to relieve congestion on the Southern Motorway would lead to some improvements in air quality, both for local residents near the on-ramps and the wider region.