Air quality evaluation: Gospel Oak-Barking line

MQT on 2009-10-14
Session date: 
October 14, 2009
Question By: 
Caroline Pidgeon
Liberal Democrats
Asked Of: 
The Mayor


What evaluation, if any, has TfL, undertaken on the possible improvements to air quality that would result from the electrification of the Gospel Oak to Barking rail line?


Answer for Air quality evaluation: Gospel Oak-Barking line

Answer for Air quality evaluation: Gospel Oak-Barking line

Answered By: 
The Mayor

The positive impact of electrification on air quality has been considered as part of the business case evaluation, which shows the proposed project offers good value for money. Diesel trains generate higher levels of atmospheric pollutants than their electric counterparts, and reduced emissions are an important benefit of the proposed scheme.

There are reductions in emissions from freight and passenger trains of three key pollutants known to cause damage to the environment and human health: Nitrogen Oxide, Sulphur Dioxide and particulate matter. Their value was quantified using guidelines issued by the Department for the Environment, Food and Rural Affairs.