London's Bus Fleet and Emissions Standards

MQT on 2014-09-17
Session date: 
September 17, 2014
Question By: 
Len Duvall OBE
Labour Group
Asked Of: 
The Mayor


Please provide a breakdown for the London bus fleet detailing for each route that travels through Greenwich or Lewisham:

(a) How many buses are in service and what Euro standards they meet?

(b) A timeline for their retrofit, stating what Euro standard they will meet and by when?


Answer for London's Bus Fleet and Emissions Standards

Answer for London's Bus Fleet and Emissions Standards

Answered By: 
The Mayor

TfL's pan-London approach is to bring all vehicles in the fleet up to or above the Euro IV engine emission standard for NOx by 2015. This will achieve a 20 per cent cut in nitrogen oxides emitted by the fleet compared to 2012 levels.

TfL is already over half way towards achieving this goal with more than 1,000 Euro III engine buses retrofitted with selective catalytic reduction (SCR) equipment. SCR achieves NOx reductions of up to 88 per cent in real-world conditions. The next stage involves retrofitting at least a further 400 Euro III engine buses that are expected to remain on routes for the next few years and replacing others with new buses with the ultra-low-emission Euro VI engine which can reduce NOx by up to 95 per cent.

This strategy enables TfL to address Euro III buses that are a contributor to NOx emission across the capital in an integrated and cost-efficient way, linked to the tender renewal process.

As part of a separate initiative, the current number of 900 hybrid diesel electric buses will also increase to 1,700 by 2016. There are in excess of 120 different routes that run through these boroughs and as such, I have asked TfL to contact you directly with details of vehicles allocated and any plans for further emission enhancements.