Rush hour is one of the oldest problems in urban life, and cities on every continent are now experimenting with new answers.
Planners point to a mix of strategies: reliable bus corridors, safer cycling networks, and employers that spread start times across the morning. None is a silver bullet, but together they can shave minutes off a typical journey.
The lesson, researchers say, is that commuting improves when cities treat it as a system rather than a series of separate roads and rail lines.
