Buses idling

MQT on 2014-07-23
Session date: 
July 23, 2014
Question By: 
Joanne McCartney
Labour Group
Asked Of: 
The Mayor


I have received a number of complaints of buses idling, particularly at Wood Green and Enfield Town. After my previous complaints, bus drivers were reminded to turn off their engines whilst at bus stands to prevent noise and air pollution. However, I have been informed that route 521 has a stop/start button to prevent buses idling. Will you consider rolling this out to all future bus purchases? Can this be fitted to the current fleet?


Answer for Buses idling

Answer for Buses idling

Answered By: 
The Mayor

All new buses entering the fleet have an automatic shut-off feature that cut engines off after a minute or so if the vehicle is not moving. Through the regular re-tendering of routes across London and maintenance of a relatively young fleet, this will become the norm over time and provide a technological solution to engine idling. As many routes come up for replacement with new buses, it would not make financial sense to retrofit older vehicles with this feature.

Measures to tackle engine idling on buses without the automatic shut-off feature include routine inspections of bus stations and stands, marketing material, information notices and guidance to bus drivers.  Other measures to reduce emissions include retrofitting around 1,000 Euro 3 buses with nitrogen oxides (NOx) reduction equipment, which cuts their NOx by up to 88%. TfL is also rapidly introducing hybrid buses to the fleet which reduce most types of tailpipe emissions significantly. There are currently 830 of these in the fleet, and the total will rise to 1,700 by 2016.