Sao Paulo, Brazil is home to some of the world's biggest traffic jams, and its subway stations are a bit overcrowded.
Just getting the door of a train closed can prove tricky.
The city's buses aren't much better.
Some commuters in Dhaka, Bangladesh travel by water.
Other Dhaka residents use the roof of the train as well as its interior.
Some seem to enjoy the ride.
Motorbikes are a popular mode of transportation in Taipei, but riders can create major bottlenecks during rush hour.
In Jakarta, Indonesia, the front of the train is fair game, too.
Being a pedestrian in Tokyo means having a lot of company.
Riding with this many people on a motorcycle doesn't look like much fun.
At peak times, New York City's Grand Central Terminal gets pretty crazy.
But it pales in comparison to what trains look like in Indonesia's West Java province, where just 300 cars serve 500,000 commuters each day.
It's hard to imagine being stuck in this Mumbai commuter train.
Train travel got less pleasant in Kenya during a January 2010 strike by minibus drivers.
In Islamabad, Pakistani men deal with a different kind of problem on the road.
After Hurricane Sandy hit New York, getting into the Holland Tunnel got more difficult.
But it wasn't as rough as the San Francisco-Oakland Bay Bridge during a July public transit workers' strike.
Heavy rain didn't deter these men in Karachi, Pakistan, from riding on the outside of a bus.
A winter snowstorm brought afternoon traffic to a standstill in Calgary.
Commuters were stranded after a 2009 typhoon washed out a chunk of a Philippines highway north of Manila.
But commuter crushes are nothing new in Manila. Here, Filipinos line up outside a train station in the city's capital in 2008.
A nationwide strike by French transport workers in 2007 made getting into a Paris subway train a lot trickier.
Commuter trains into and out of the city weren't any more pleasant.
Here's a more luxurious way to go.
