• Reference: 2014/3104
• Question by: Stephen Knight
• Meeting date: 17 September 2014

Further to your claim that a national scrappage scheme for diesel vehicles is now needed as a priority [Evening Standard, 01 September 2014] why have you consistently refused to implement a financial incentive scheme to encourage taxi drivers to purchase the cleanest available vehicles in London, promised in each and every year of your first mayoral term?

• Reference: 2014/3103
• Question by: Stephen Knight
• Meeting date: 17 September 2014

What percentage of London Underground's energy supply came from renewable sources in 2013/14?

• Reference: 2014/3102
• Question by: Stephen Knight
• Meeting date: 17 September 2014

Does the decision not to incorporate the London Fire Brigade's electric charging points into the wider Source London network - prohibited under the terms of the Office for Low Emission Vehicles (OLEV) grant - represent a missed opportunity to build a strong and easily recognisable brand for London's charging point network? Will you be raising this case with the OLEV, and what is your overall vision for the future of the Source London network?

• Reference: 2014/3101
• Question by: Stephen Knight
• Meeting date: 17 September 2014

What progress have you made on developing a new Low Emission Vehicle Roadmap (referenced in answer to MQ2014/0152) and when do you expect to publish this document?

• Reference: 2014/3100
• Question by: Stephen Knight
• Meeting date: 17 September 2014

Further to your press release of 8 May 2014 ['Leading architects appointed to work on new homes and jobs on Heathrow airport site'] can you confirm the costs of appointing three leading architectural practices to produce designs for the redevelopment of Heathrow airport? Please also list the total cost of the report produced by Jones Lang LaSalle (JLL) with Peter Brett Associates (PBA) which examined potential redevelopment options for Heathrow in the event of the airport's relocation in 2029/2030?

• Reference: 2014/3099
• Question by: Stephen Knight
• Meeting date: 17 September 2014

Please list the number of reports TfL has received via its dedicated 'No Engine Idling' email address ( [email protected]) in 2011, 2012, 2013 and 2014 to date.

• Reference: 2014/3098
• Question by: Stephen Knight
• Meeting date: 17 September 2014

How many of the taxi and private hire vehicle drivers who participated in the smarter driving training programme - funded through your Cleaner Air Fund in 2012 - are still operating on London's roads? Is it time to consider re-offering this training to professional drivers in order to reduce emissions from high-mileage vehicles operating in central London?

• Reference: 2014/3097
• Question by: Stephen Knight
• Meeting date: 17 September 2014

What, if any, amendments have been made to the design of taxi ranks to discourage idling by drivers?

• Reference: 2014/3096
• Question by: Stephen Knight
• Meeting date: 17 September 2014

Will you consider reintroducing taxi marshals at mainline stations in central London in order to engage directly with taxi drivers and reduce idling at busy taxi ranks?

• Reference: 2014/3095
• Question by: Stephen Knight
• Meeting date: 17 September 2014

What efforts have you made to promote the 'No Engine Idling' message across London since the conclusion of the 'No Engine Idling' campaign in 2012?