Safer cars = more dangerous drivers and other paradoxes

The mystery of phantom traffic jams explained

If you’ve ever wondered why you can spend an aeon in a traffic jam on a motorway with no apparent cause, why we’re so intolerant of each other when we’re driving and why we think it’s ok to speed but never to go through a red light, then I’d recommend the book Traffic by Tom Vanderbilt…

As well as being a compelling account of the crazy paradoxes of the psychology of driving (for example SUV drivers are more likely to be talking on the phone and not be wearing a seatbelt because they feel safer, which means they’re actually much less safe than those in smaller vehicles), I’d also recommend the book to any fans of behavioural economics. In place of conventional economists, the too-rational target in this book are traffic engineers, who continue to plan road systems in the blithe belief that humans are completely rational beings. The book, sometimes hilarious sometimes tragic, shows us that we’re not, and that this has a huge impact on the way people live their lives alongside, and too often under, motor traffic the world over.

The book does have one hero however, in the shape of Hans Monderman who pioneered the ‘shared space’ approach to street design in the Netherlands. This concept of street design compels us as drivers to take more care by manipulating our sub-conscious to respond to a lack of rational information. A powerful example of ‘nudge’ psychology in action, Monderman’s approach is the reason why we now have more raised junctions for example, and that there’s a trend away from the compulsion of signs and markings to more effective ways of shaping driver behaviour. While this type of progressive design is seen mostly in built up environments, it’s the two-way, high-speed country road that’s the world’s biggest killer. This is becoming a massive issue for humanity as tens of millions get into cars for the first time in countries like China and India.

Ultimately, this is a fascinating book about how our pre-historic brains are incredibly bad at calculating risk within the sort of timeframes demanded of them while at the wheel of a car.