Loampit Vale

MQT on 2015-12-16
Session date: 
December 16, 2015
Question By: 
Caroline Pidgeon
Liberal Democrats
Asked Of: 
The Mayor


In response to my question on the Loampit Vale TfL consultation (2015/3569) you stated that the cycle lane was going to be removed, because it was too narrow and replaced with a 4m width traffic lane.

Are you aware that traffic lanes of 4m width are contrary to long established London Cycling Design Standards, which advise strongly against lane widths of less than 4.5 metres as being unsafe for overtaking?


Answer for Loampit Vale

Answer for Loampit Vale

Answered By: 
The Mayor

The average available carriageway width at this location is 10.1m. Of this, 3.0m is taken up by the existing bus lane, leaving 7.1m of available carriageway. If a 3.0m eastbound traffic lane is provided, this enables a 4.1m westbound traffic lane to be accommodated.

Specifying a minimum width of traffic lane without a dedicated cycle lane was first raised in the draft London Cycling Design Standards (LCDS) in 2014, which stated that 'comfortable overtaking is possible above 3.9m'. The updated LCDS, published in late 2014, states that 'a width of 4.5m allows for comfortable overtaking if there are heavy vehicles but that actual lane widths will be dependent on traffic composition.' 

In this case, only 7 per cent of westbound traffic on the A20 is classified as heavy vehicles, which is not considered a significantly high proportion. On balance, therefore, the approach taken is considered the best option given the available carriageway space and composition of traffic.