Skip to main content

Experiment discovers ‘deadliest distractions’ at the wheel

Road safety charity IAM RoadSmart and UK car magazine Auto Express teamed up to find out which are the deadliest behind-the-wheel distractions with programming a sat-nav found to be the worst. Auto Express consumer editor Joe Finnerty and British Formula 3 hopeful Jamie Chadwick were put to the test in a professional racing simulator at Base Performance Simulators in Banbury. They were both assessed to see how they coped with the most common distracting tasks on UK roads, while completing timed laps and bra
April 28, 2017 Read time: 2 mins
Road safety charity IAM RoadSmart and UK car magazine Auto Express teamed up to find out which are the deadliest behind-the-wheel distractions with programming a sat-nav found to be the worst.


Auto Express consumer editor Joe Finnerty and British Formula 3 hopeful Jamie Chadwick were put to the test in a professional racing simulator at Base Performance Simulators in Banbury. They were both assessed to see how they coped with the most common distracting tasks on UK roads, while completing timed laps and braking at a specific point. IAM RoadSmart’s head of technical policy, Tim Shallcross, monitored the findings.

The results showed a large difference in performance between distractions. Entering a postcode into a sat-nav app proved to be the worst, followed by sending a text message. Other tasks carried out included eating, drinking, making a phone call and talking to a passenger.

The least distracting task for lap time was talking to a passenger, but it still ranked very poorly for the braking test. According to Shallcross, both drivers failed to brake accurately at the target line. He noted that their ability to drive normally confirms the difference between the extra distraction of a phone conversation and the natural act of talking to a passenger, but still shows that any distraction reduces attention, and in an emergency, it might be critical.

Related Content

  • Safety trials for Forum8 cycle simulator
    August 20, 2020
    US research could help with safer urban road designs for both drivers and cyclists
  • App informs drivers of delays during Long Beach bridge replacement
    June 6, 2014
    David Crawford previews a work zone travel breakthrough. In February 2014, the Port of Long Beach in California launched what it claims is a groundbreaking construction zone navigation aid - LB Bridge mobile app. The app is designed to help drivers during the Gerald Desmond Bridge replacement programme by keeping them up to date on activity and the ensuing traffic diversions when construction starts in summer 2014. The unusually content-rich app is designed to convey current project news (enlivened by phot
  • UK road safety charity calls for drivers to stay sober
    December 19, 2016
    UK road safety charity Brake is calling on drivers to stay sober if driving over the Christmas period or plan to get home by taxi or public transport, to prevent road casualties. Brake is renewing calls for a zero tolerance drink drive limit of 20mg alcohol per 100ml of blood, in line with evidence which claims that even one drink dramatically increases crash risk and to send a clear message it should be none for the road. Brake says a blood alcohol level of 20-50mg increases the likelihood of crashing t
  • Pioneering IntelliDrive technologies in Michigan
    February 2, 2012
    Pete Goldin reports on upgrades to the USDOT's Michigan Test Bed, where IntelliDrive technologies are being pioneered