The US Department of Transportation has established a strict time limit of three hours as the length of time US airlines can keep passengers on a tarmac during domestic flights.
The rule is applicable to US airlines operating domestic flights and will be in effect within 120 days.
International flights departing from or arriving in the US will have to follow the same rules as domestic carriers when in the US.
Food and drinking water, medical attention as well as operational lavatories for passengers will have to be maintained by the carriers within two hours of the aircraft being delayed on the tarmac.
The rule has been adopted due to the high incidence of flight delays and consumer complaints in regards to delayed flights.
The rule also prohibits airlines from retroactively applying material changes to carriage.