Driver Fatigue and Bus Collisions

MQT on 2018-05-17
Session date: 
May 17, 2018
Question By: 
Caroline Pidgeon
Liberal Democrats
Asked Of: 
The Mayor


According to TfL's own data over the 10-year period 1 April 2007 to 31 March 2017, TfL has recorded 249,835 collisions involving TfL buses, 161 which have resulted in fatalities. In how many of these collisions was driver fatigue recorded as a factor or contributing cause?


Answer for Driver Fatigue and Bus Collisions

Answer for Driver Fatigue and Bus Collisions

Answered By: 
The Mayor

The dataset referred to in the question is Transport for London's (TfL's) Incident Reporting Information System (IRIS), through which bus operators report incidents around the time they occur. Fatigue has not been highlighted as a factor in any of the collisions in this dataset. Factors are only recorded at the time of the incident in this dataset. 

TfL also uses separate police STATS19 data, which records collisions resulting in personal injury within 30 days of the incident. This combines buses and coaches into a single vehicle category. Of the 19,994 personal injury collisions recorded in STATS19 involving a bus or coach in the time period specified, 86 were coded with a contributory factor of driver fatigue though this factor can apply to any driver involved in the collisions, not necessarily the bus driver.  None of the 158 fatal collisions recorded in STATS19 were coded with this factor.

As set out in my response to Mayor's Question 2018/1131, TfL takes fatigue management seriously and, as part of its response to the learning from the investigation into the over-turning of the tram at Sandilands, is reviewing fatigue management systems at all its Surface Transport operations contractors. This includes procuring independent research into bus driver fatigue, which will help look at whether this is an issue in London and what action might be needed. TfL also recently held a fatigue management workshop with its bus operators.