The Sydney Morning Herald reports on several studies that highlight the dangers of driving while using hands-free car phones. A long-term study conducted by the National Highway Traffic Safety Administration in the US in 2003, but only recently reported in the New York Times, uncovered “negligible differences in safety relevant behaviour and performance between using a hand-held and hands-free communications devices while driving from the standpoint of cognitive distraction”. Advice from authorities is conflicting. In Australia, the NSW Roads and Traffic Authority urges drivers to keep their mobile conversations short and to avoid “complex or emotional” topics, but the the NRMA motoring organisation goes a step further, advising drivers who want to make or receive a call or send a text, to pull over before using their mobiles. “Even when you’re on a mobile hands-free, you are diverting your attention from driving and increase the risk of having a crash," NRMA Insurance spokesman John Hallal said. In 2005, the Insurance Institute for Highway Safety undertook a study to cross-match traffic accidents with phone billing data. The findings indicated a four-fold increase in injury crash risk from the use of mobile phones, consistent across male and female drivers, older and younger drivers, and hand-held and hands-free phones.
Another study by Griffith University in 2004 revealed that it was not only hand-held mobiles that caused problems, and the interference from talking to someone not in same context was problematic. Russell White, a driving expert who helped to conduct the 2004 study, said: “We discovered that distraction didn’t come from the type of conversation... It was the factor of having the chat, during which we saw changes in driving performance in terms of perception, awareness and also vehicle control... We found they braked later and cornered harder when having telephone conversation as opposed to when there were no distractions.” He said the key problem was the internal process of having a phone call, which takes them out of their current situation.
In spite of the mounting evidence, equipment manufacturers continue to market hands-free systems as safe alternatives to hand-held phones. “Hands-free car kits allow the convenient and safe use of your mobile phone so you can maximise down time while driving,” Telstra says on its website.
But an outright ban on hands-free dialling will not solve existing safety concerns said Thilo Koslowski, Gartner’s car industry analyst: “What we need are more studies to examine the cognitive load of talking on a mobile phone. I think ultimately the automobile industry will find the answer in sophisticated communication systems that can interact with driving data,” he said. Source: Sydney Morning Herald, 29 July 2009. tinyurl.com/n9dydo
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