passenger

n. traveler, fare, one who rides (boat, plane, train, car, bus, etc.); person in a crew or group who does very little productive work or does not do his/her share of the work, person who participates in an activity in an inactive manner

adj. used for passengers (as a passenger train, passenger aircraft, etc.)

This article is about passengers in commercial transportation; for other uses see Passenger (disambiguation) A passenger is a term broadly used to describe any person who travels in a vehicle, but bears little or no responsibility for the tasks required for that vehicle to arrive at its destination.There are two common contexts in which the term is used:The first is for persons transported in automobiles or vans, irrespective of whether they have paid for the transportation.The second is for persons who pay to be transported in common carriers, including commercial vehicles and vessels such as buses, trains, airplanes, and ships. For example, a flight attendant on an airline or a cruise ship employee aboard such a ship would not be considered a "passenger" while aboard the vessel, but an employee riding in a company car being driven by another person would be considered a passenger, even if the car was being driven on company business.
See more at Wikipedia.org...

Noun
1. a traveler riding in a vehicle (a boat or bus or car or plane or train etc) who is not operating it
(synonym) rider
(hypernym) traveler, traveller
(hyponym) commuter
(classification) boat

(n.)
A traveler by some established conveyance, as a coach, steamboat, railroad train, etc.
  

(n.)
A passer or passer-by; a wayfarer.
  

Any occupant of a motor vehicle who is not a driver. (NHTSA3)

A person who is on, boarding, or alighting from a railroad car for the purpose of travel, without participating in its operation. (FRA3)

With respect to vessels and for the purposes of 49 CFR 176 only means a person being carried on a vessel other than: the owner or his representative; the operator; a bona fide member of the crew engaged in the business of the vessel who has contributed no consideration for his carriage and who is paid for his services; or a guest who has not contributed any consideration directly or indirectly for his carriage. (49CFR171)