Road safety

MQT on 2009-11-18
Session date: 
November 18, 2009
Question By: 
Jenny Jones
City Hall Greens
Asked Of: 
The Mayor


Thank you for your answer to my question 2700 / 2009 regarding data recorders. What are the reasons given for not fitting them to police motorbikes? What would be the cost of retrofitting data recorders to a) the black cab fleet b) buses?


Answer for Road safety

Answer for Road safety

Answered By: 
The Mayor

Data recorders must be mounted horizontally for accurate data recording. Any deviation from this alters the value of the force recorded.

Motorcycles tilt as they negotiate bends and carry out overtaking manoeuvres. This generates forces that are not in the horizontal plane as required by the data recorder. The MPS assessment is therefore that the data collected will not be robust. Work is underway to identify a reliable system that can be installed on motorcycles.

TfL does not currently have any plans to require the fitting of incident data recorders in taxis. London's 21,500 licensed taxis are involved in very few fatal or serious injury collisions and to date a case has not been made for fitting them with data recorders. However, the cost of retrofitting data recorders to the black cab fleet if fitted through the MPS contract would be in the region of £600 per vehicle.

TfL is not able accurately to estimate the cost of retrofitting data recorders to buses. However, bus operators are considering fitting equipment that monitors driving performance, primarily for environmental management purposes. TfL is encouraging this move for the emission reduction and fuel efficiency benefits that should arise.