1.   But three years ago, the Green Party forced the issue into the open by leaking studies showing the rising health problems linked to traffic pollution.

2.   A commission group next week begins discussions of a new protocol which will aim first and foremost to curb nitrogen emissions caused by traffic pollution, agriculture and industry.

3.   But the city council is confident it can manage the system and that it will combat traffic pollution effectively.

4.   Many experts believe that about half of those come from traffic pollution, which includes not only exhaust emissions but also dust from tires and debris disturbed by traffic.

5.   Traffic pollution is also a killer.

6.   The Mont Blanc tragedy sparked deep concern in neighbouring France about safety through the passage and fuelled protests there about road traffic pollution in the fragile Alpine ecosystem.