It will ban all petrol and diesel taxis , cars and motorcycles excluded from six central streets from 2020 before expanding it in 2020 and 2030 to cover the entire city centre . On Monday, a six-week public consultation on the proposals will be launched. In 2035 , HGVs will also be banned , creating what may be the world 's first zero emissions zone .
It will ban all petrol and diesel taxis , cars and motorcycles excluded from six central streets from 2020 before expanding it in 2020 and 2030 to cover the entire city centre . In 2035 , HGVs will also be banned , creating what may be the world 's first zero emissions zone .