But they don't all look the same.

These incredible pictures show how the transport used - and the conditions - can vary enormously from country to country. 

In India a rush hour journey can be teeming with cows, goats and rickshaws. In Tokyo the trains are so busy that staff are employed to push people into the carriages.

In Hue City, Vietnam, meanwhile, thousands of commuters take to motorbikes and charge en masse to their places of work.

Here MailOnline Travel reveals images of the most extreme rush hours, events that as a tourist you may well want to steer clear of.

(dailymail.co.uk)