Drivers can now steer clear of the Bath Clean Air Zone following an update to a sat nav app.

The app - Waze now lets users indicate if their vehicle is due to be charged so they can use alternative routes or get a reminder to pay the charge when they enter.

It says the routing will "help drivers steer clear of unnecessary fines and ultimately reduce their carbon footprint by finding optimal routes to travel".

Residents have voiced concerns drivers dodging the charges are finding new rat runs and spreading pollution across the city.

Bath and North East Somerset Council is set to review the first months of operation in the autumn – and leader Kevin Guy said the boundary could be moved or changed.

Speaking after the app update, Waze UK country manager Ruairidh Roberts said: "Bath is taking steps towards becoming a greener city and, thanks to our team of dedicated map editors, drivers can now be more mindful of their environmental outputs when travelling through the designated clean air zones.

"Working together, we can outsmart traffic and provide the route to cleaner air, one notification at a time."

Non-compliant vans, taxis and private hire vehicles face a £9 daily charge to enter the clean air zone, while those behind the wheel of a bus, coach or HGV have to pay £100 a day.

Speaking on BBC Radio Bristol on July 15, Councillor Guy said the data had indicated that nitrogen dioxide levels could be brought within the legal limit without charging private cars but added: "Time will tell on that. If pollution levels don't decrease we'll have to rethink. We'll see what that autumn review reveals."

He said the zone, an "overall" success, would continue to be monitored by the council, and despite being "skewed" by the Covid pandemic and the closure of Cleveland Bridge he hoped the data would show how traffic patterns have changed.

"If that means we have to rethink the clean air zone, either by expanding it or moving it, then we'll do that," said Cllr Guy. "We'll only do that through consultation and through listening."

Mark, a caller from just outside the clean air zone boundary in Oldfield Park, said he had seen a "massive" increase in traffic and his children now walk through more pollution.

He said the "whack-a-mole" approach of reducing pollution levels in certain areas had caused increases elsewhere.

Cllr Guy said there had been a noticeable decrease in the number of HGVs driving into the zone due to the £100 charge.

He accepted there had been a "knock-on effect and unintended consequences", adding: "In the autumn review we need to look at that and listen to people like Mark and make sure we include data from all over Bath and in North East Somerset to make sure we get it right."