Boarding is the entry of passengers onto a vehicle, usually in public transportation. Boarding starts with entering the vehicle and ends with the seating of each passenger and closure of the doors. The term is used in road, water and air transport (for example, passengers board a coach).
At commercial airports, a boarding call on the public announcement system asks travelers to proceed to the departure gate and board the aircraft. This can begin any time from an hour to thirty minutes before departure (depending on the size of the plane and number of passengers). For boarding an aircraft, airstairs or jetways are used. Small aircraft may carry their own stairs.
Airlines control the access to the aircraft by checking passengers' boarding passes and matching them with the list of passengers and their identification cards. Many airlines use the IATA standard Bar Coded Boarding Passes (BCBP) to automate this process. A 2D bar code is scanned and the data are sent to the airline's system to look up the list of passengers. If the passenger is entitled to board, a positive message is sent back to the airline agent.
Most North American airlines have assigned seating, but Southwest Airlines does not. Southwest boards passengers in A, B, and C groups depending on their ticket purchase date. Across North American airlines, it is standard to allow early boarding for passengers with mobility impairments, those with small children, and first class passengers. All airlines allow passengers in premium cabins or with elite status to board earlier, with some offering it to coach customers for a fee.
Several boarding patterns by seating location are possible:
Efficiency considerations to minimize overall boarding time include:
Competing considerations include:
Computer simulations indicate that the outside-in and reverse-pyramid patterns should be fastest, followed by block and random, followed by back-to-front and rotating zone. American Airlines found in a two-year study that randomized boarding was faster than outside-in. Despite this, most North American airlines use the back-to-front pattern.
Another proposed method to speed boarding is to have passengers sort themselves by row and seat while still standing in the waiting area.
As the process of controlling and verifying boarding passes and identity documents takes non-negligible amounts of time and as some airlines aim to reduce turnaround times, the process of "pre boarding" is increasingly employed. In this process, passengers enter a separate area after having their boarding pass inspected before the plane is ready to be boarded and once actual boarding commences passengers simply enter the plane.
Officers board a ship using a gangway.
Passengers board buses in the United Kingdom by either indicating to the bus driver they want to board (by queueing at the bus stop or by holding out an arm) or by boarding when a bus has stopped at a bus station.
Once on board passengers can either purchase a ticket for their journey or they can show a travel pass (such as an Oyster card when passengers travel on London buses).
On long distance buses in Europe tickets are usually checked upon boarding whereas in Latin America fares or tickets are collected on the moving bus by an assistant to the driver.
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