Air quality falls in Lydney in the Forest of Dean
Levels of nitrogen dioxide have been found to be above national safety levels in a town in the Forest of Dean.
As a result, parts of the centre of Lydney have been designated as air quality management areas.
Councillors have said the issue is not a health hazard but the air quality levels are being monitored closely.
Forest of Dean District Council has also started a consultation on what can be done to manage the problem in High Street, Newerne Street and Bream Road.
Cabinet member for the environment Martin Quaile said: "If the levels got incredibly high, it could have an effect on people's breathing.
"But when you think of it in terms of London and other major cities, then once again there is no panic on - we don't have a huge problem."