Engineers are studying how people choose routes when driving. They found that drivers don't always pick the shortest route because they care about how reliable the travel time is. Some prefer a shorter but more predictable travel time, while others prefer a longer but more reliable one. To understand this, they asked 4000 people about their preferences. They discovered that people's aversion to risk affects their route choices. This information is important for designing systems that provide travel information to help drivers make better decisions.