Students monitor parents' air pollution
8 August 2014 Last updated at 09:13 BST
The school run is a well known source of traffic congestion - bringing with it increased air pollution.
Roads outside Bearsden Academy in Glasgow have become so busy that the children have resorted to checking-up on their parents.
They have installed air quality monitors in the hope they will shock mums and dads into leaving the car at home.
Eleanor Bradford has been following their progress.