low-floor

In public transportation, low-floor is a term describing vehicles such as buses, trolleybuses, and trams whose passenger compartment has a floor which is considerably lower than that of traditional models. A recent development in the transport industry, vehicles of this type have a stepless entry and usually have an area without seating next to at least one of the doors where wheelchairs and perambulators can be parked. In addition to improving accessibility, low floors also allow fully-mobile passengers to board more quickly, and in some cases can produce improvements in overall speeds.
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