Skip to main content

Mobile phones & driving & the rules of distraction

Making it illegal to hold your mobile phone while driving is designed to increase road safety, says Adam Hill. Cambridge Mobile Telematics has been looking at the numbers to see if it works
January 5, 2024 Read time: 3 mins
Put it down, it's the law (© Maksim Marchanka | Dreamstime.com)

Hands-free cellphone laws were passed in the US states of Ohio, Michigan, and Alabama in 2023, making it illegal to hold a phone while driving there. It’s relatively early days but Cambridge Mobile Telematics (CMT) has analysed the statistics to see whether drivers are taking any notice.

The company measures what it calls “phone motion distraction”, which happens when the phone screen is on and the phone is moving, indicating that the driver has it in their hand and therefore cannot be fully concentrated on the road ahead. The results are interesting: while CMT says that distracted driving is down in Ohio and Michigan – and more than 3,800 crashes have been prevented with new laws – it has actually increased in Alabama (see Look – no hands! below).

In some ways this fits a pattern: the company analysed another eight states that introduced hands-free legislation from 2018-21, and found that the average reduction in distraction was 13% in the first three months after the laws were introduced. However, by the end of 2022, distraction was up by 3% in these states compared to the month before the law.

 

"Every 10% increase in distracted driving raises the crash rate by 1.4%"

 

This is highly significant because CMT’s research suggests that every 10% increase in distracted driving raises the crash rate by 1.4%. This comes at a human and financial cost. NHTSA’s The Economic and Societal Impact of Motor Vehicle Crashes from 2019 shows $340 billion in crash damages from 14.2 million crashes that year, averaging $23,954 per crash.

CMT says that, while distracted driving in Alabama fell slightly in the first month, it rose after that until, by month three, it was actually higher than before the law. Interestingly, a relative lack of media coverage may have been a factor. In Ohio, there were over 130 stories published about the initial drop in distracted driving and the prevention of crashes, while state governor Mike Dewine also tweeted about the results. In Michigan, CMT says, there were more than 20 articles about the hands-free bill performance after the first month. By stark contrast, it found one article in Alabama.

Despite this, any reduction in distraction levels is welcome: CMT estimates that, in the first month, Alabama was able to prevent 70% of crashes and $1.6 million in economic damages. “While the long-term performance in Alabama isn’t in line with Ohio and Michigan, these results show that even small improvements help reduce road risk and crashes,” CMT says.

___________________________________________________________________________________________________________________________________________________________


Look – no hands!

Ohio
•    Start date: 4 April, 2023
•    Distraction 1 month before law: 1 minute and 39 seconds
•    Average distraction after law: 1 minute and 32 seconds
•    Overall distraction change: 7.5% reduction
•    Crashes prevented: 2,200
•    Fatalities prevented: 6
•    Economic damage prevented: $54 million

 

Michigan
•    Start date: 30 June, 2023
•    Distraction 1 month before law: 1:48
•    Average distraction after law: 1:34
•    Overall distraction change: 12.7% reduction
•    Crashes prevented: 1,600
•    Fatalities prevented: 4
•    Economic damage prevented: $38 million

 

Alabama
•    Start date: 16 June, 2023
•    Distraction 1 month before law: 2:05
•    Average distraction after law: 2:05
•    Overall distraction change: 0.3% increase
•    Crashes prevented: 70
•    Economic damage prevented: $1.6 million

Source: www.cmtelematics.com

For more information on companies in this article

Related Content

  • Fewer drivers punished for mobile use, police figures suggest – IAM response
    April 17, 2015
    The Institute of Advanced Motorists (IAM) has responded to the BBC story this morning suggesting the number of drivers given penalty points for using mobile phones at the wheel fell by 24 per cent last year in England and Wales. In addition to the BBC’s findings, an earlier study by the Department of Transport showed 1.1 per cent of drivers in England and Scotland were observed holding a phone in their hand with a further 0.5 per cent observed holding the phone to their ear – this is potentially more tha
  • euroFOT study demonstrates benefits of driver assistance systems
    June 26, 2012
    Today, the euroFOT consortium published the findings of a four-year study focused on the impact of driver assistance systems in the Europe. The €22 million (US$27.5 million) European Field Operational Test (euroFOT) project which began in June 2008 and involved 28 companies and organisations, was led by Aria Etemad from Ford’s European Research Centre in Aachen, Germany. The study looked at existing technologies and their potential to both enhance safety and reduce environmental impact. euroFOT also reveale
  • Reduce fatal crashes? Get police on the road
    July 8, 2019
    There are many elements to speed enforcement - but research suggests there is a strong correlation between getting police on the roads and reducing fatal collisions There are a variety of elements which go into successful speed enforcement. The European Union’s blueprint for this (see 10 Rules…) ranges from prioritising roads to offender education courses, and from legislation to data. But research suggests that one of the key factors is visibility – drivers need to see technology in action or police on
  • Latest A9 speed camera report ‘shows improvement in driver behaviour’
    July 28, 2015
    The latest performance data for A9 speed camera system has been published by Transport Scotland on behalf of the A9 Safety Group, covering the period May 2015 to July 2015 (incidents are quarter two April to June) as an overall assessment of the performance of the route. The report incorporates the first information in relation to collision and casualty figures covering the period from October 2014 to March 2015, which are reported against the average of the equivalent months in the preceding three year