New 'real world' diesel tests fail to prevent rush hour pollution peak

Exclusive: new tests are intended to close loopholes but cars can still emit excess fumes in slow traffic, data showsNew “real world” emissions tests fail to prevent high levels of pollution from diesel cars during rush hour, according to new data.Diesel vehicles are the main cause of the UK’s widespread levels of illegal air pollution, with the VW cheating scandal exposing the fact that virtually all diesel cars emitted far more toxic fumes than in official laboratory based te