Buses in congestion charge zone

Meeting: 
MQT on 2015-11-18
Session date: 
November 18, 2015
Reference: 
2015/3705
Question By: 
Darren Johnson
Organisation: 
City Hall Greens
Asked Of: 
The Mayor
Category: 

Question

How many buses (i.e. vehicles, not routes) that operate in the congestion charge zone (a) currently fall below the Euro VI standard and (b) are expected to still fall below that standard in 2020?

Answer

Answer for Buses in congestion charge zone

Answer for Buses in congestion charge zone

Answered By: 
The Mayor

The below table provides a breakdown of Euro VI, non-Euro VI and zero emission buses operating in the Congestion Charge Zone (CCZ) currently and the estimates for 2020.  

Year

ULEZ Peak Vehicle Requirement

(Note: buses can enter more than one zone)

Euro VI (%)

Non Euro VI (%)

Zero Emission

2015

2936

18.5

80.5

1.0

2020

2936

84.5

  9.0

6.5

In 2020, all buses entering the CCZ will meet or be close to meeting the Euro VI emission standard for oxides of nitrogen (NOx). The nine per cent that are expected to be slightly below this standard will be low emission New Routemasters with Euro V engines which emit four times less NOx than standard hybrids of the same engine generation. These engines are very close to Euro VI in their performance and it would not make commercial or environmental sense for TfL to upgrade these to Euro VI when the same level of investment would deliver far greater emissions reduction elsewhere on the bus network.

Currently, around 1,600 Euro III buses in the fleet are fitted with selective catalytic reduction equipment which cuts their tailpipe oxides of nitrogen emissions (NOx) to much better than Euro V and closer to Euro VI levels. So, more than a quarter of the fleet currently approaches Euro VI NOx levels compared to Euro V and earlier generation vehicles.