Transport for London – ISA on London's transport fleet
Transport for London (TfL) started retrofitting speed limiting technology to their commercial vehicle fleet in 2021 as a key part of a fleet safety programme. Approximately 360 of TfL’s vehicles were fitted with ISA devices and an evaluation of the effectiveness of the rollout carried out earlier this year. The results have been extremely encouraging.
• A 62% reduction in speeding incidents amongst vehicles fitted with ISA
• No increase in the number of harsh braking, harsh cornering, or harsh acceleration incidents- alleviating any concerns that the ISA fitment may have unintended consequences in terms of driving style
• No significant change to the number of trips taken by vehicles after ISA was fitted- suggesting that ISA vehicles are not being avoided
• The average distance travelled and average journey time taken for each trip was largely unaffected by the fitment of ISA- helping to break down the misconception held by many that speeding will get you to your destination significantly sooner