It requires passengers who cannot fit in a single seat to buy another.

All the passengers are required to track down and murder another passenger.

Life jackets must be provided, but passengers are not required to wear them.

All passengers were required to check in at ticket counters.

Although airlines must ask for the name and phone number of an emergency contact, passengers will not be required to supply them.

Adult passengers are required to produce a photo identification on request.

This has the disadvantage that passengers may sometimes be required to walk long distances.

If the ticket expires, the passenger will be required to buy a new one.

Limited express buses have more seats, but often passengers are required to stand.

In some cases, passengers were required to buy new tickets at full-price.