• Reference: 2012/2000
• Question by: Stephen Knight
• Meeting date: 04 July 2012

How will you inform competitors and spectators of local air quality conditions during the 2012 Olympic Games?

• Reference: 2012/1999
• Question by: Stephen Knight
• Meeting date: 04 July 2012

Does your refusal to publish smog alerts on the GLA website place you in breach of your duty to 'promote improvements in the health of persons in Greater London' under the GLA Act (1999)? Why do you refuse to implement this relatively simple, cost-neutral, measure which would be of great benefit to those with existing respiratory problems, including the c.690,000 asthma sufferers in London?

• Reference: 2012/1998
• Question by: Stephen Knight
• Meeting date: 04 July 2012

Further to MQ 0479/2012, will you publish a copy of the research TfL conducted with London drivers to understand which approach would be most effective in encouraging them to reduce the amount of time they spent idling unnecessarily? How many drivers were consulted, and what were they asked?

• Reference: 2012/1997
• Question by: Stephen Knight
• Meeting date: 04 July 2012

Please set out the total cost of the 'No Engine Idling' campaign to date?

• Reference: 2012/1996
• Question by: Stephen Knight
• Meeting date: 04 July 2012

Please list the amount of funding you have previously allocated to support the development and take-up of the airTEXT service?

• Reference: 2012/1995
• Question by: Stephen Knight
• Meeting date: 04 July 2012

Given that the number of airTEXT subscribers has increased by only 500 since the publication of your Air Quality Strategy (2010), it will take another 998 years before your aspiration to sign up a further 250,000 participants is met. What more will you do to provide air quality information and health advice to those affected by pollution episodes in the meantime?

• Reference: 2012/1994
• Question by: Stephen Knight
• Meeting date: 04 July 2012

What actions are you taking to reduce diesel emissions from public transport vehicles, including buses, taxis and trains, following the World Health Organisation's classification of diesel exhaust fumes as a 'major cancer risk'?

• Reference: 2012/1993
• Question by: Stephen Knight
• Meeting date: 04 July 2012

Does TfL's plan to tighten the carbon dioxide level at which cars can travel within the congestion zone for free risk having an adverse impact on levels of nitrogen oxides (NOx) and particulate matter (PM10)? Do you anticipate any increase in the number of diesel vehicles being purchased as a result of this policy?

• Reference: 2012/1992
• Question by: Stephen Knight
• Meeting date: 04 July 2012

Do you dispute that annual mean concentrations of nitrogen dioxide in London are comparable with those in Beijing before the 2008 Olympics, and if so why?

• Reference: 2012/1991
• Question by: Stephen Knight
• Meeting date: 04 July 2012

Do you dispute that London had the highest annual mean concentrations of nitrogen dioxide of any capital city in Europe in 2010, and if so why?