From a Q & A with Tom Vanderbilt, author of Traffic: Why We Drive the Way We Do (and What It Says About Us), at the Knopf website:
Q: Is it true that the most common cause of stress on the highway is merging? Why of the myriad things to cause stress on the road is this at the top?
A: Merging is the most stressful single activity we face in everyday driving, according to a survey by the Texas Transportation Institute. People who have done studies at highway construction work zones have also told me of extraordinarily bad behavior, triggered by this simple act of trying to get two lanes of traffic into one. Sometimes, it’s simply the difficult mechanics of driving — trying to enter a stream of traffic flowing at a higher speed than you are, for example. Drivers, to quote a physicist who was actually talking about grains, are objects “who do not easily interact.” But I also think there’s something about the forward flow of traffic that makes us register progress only by our own unimpeded movement; as in life, we seem to register losses more powerfully than gains, and registering these losses boosts stress.
Read
the entire Q & A.
--Marshal Zeringue
