> In the car it is turn by turn navigation This isn't likely general knowledge here on HN, but currently here in Phoenix, we've recently (within the past coupl

> In the car it is turn by turn navigation This isn't likely general knowledge here on HN, but currently here in Phoenix, we've recently (within the past couple of years) had a major uptick in the number of people who are getting on the freeway in the wrong direction and driving into on-coming traffic (usually resulting in the inevitable death of one or more people). Most of these have been attributed to either confusion at night and older drivers, or driving while under the influence of a substance. A minor few have been found to have been caused by bad road design (leading people unfamiliar with our freeway system to enter the freeway wrongly). However, some of these happen in broad daylight, without the person seemingly being confused or under the influence of anything. My wife has seen this happen personally. People honk and try to get the person's attention; sometimes they realize their error. Sometimes they don't. She has typically seen this happen most often when there is a lot of traffic backed up around freeway entrances. Her theory is that people are "blindly" following the turn-by-turn directions of a GPS, and not paying attention, or becoming harried by the amount of traffic, or hearing something like "turn left in 100 feet" - but only following the "turn left" part. I don't know what the validity of this theory is, but it's an interesting explanation for something that is happening all too common on our freeways (at one point, it was almost as if once a week you would hear about a "wrong way driver" accident - and it is known that this is an increase over the past rates - so much so that I've read that some form of warning system is going to be installed in an effort to prevent this from happening).