Aircraft - means any contrivance now known or hereafter invented, used, or designed for navigation of or flight in the air.

Aircraft, Chartered - an aircraft whose operation is performed on the basis of a contract between the aircraft owner and the user.

Aircraft, Civil - an aircraft operated for the purpose of civil aviation (not classified as military).

Aircraft Movement - an aircraft take-off or landing at an airport.  For airport traffic purposes, one arrival and one departure are counted as two movements.

Airline - any air transport enterprise offering or operating a scheduled international/domestic air service.

Airmail - mail matters which are transported using air as the mode of conveyance.

Airport, International - an airport designated by the Philippine Government in whose territory it is situated as an airport of entry and departure for international air traffic, where the formalities incident to customs, immigration, public health, agricultural quarantine and similar procedures are carried out.

Airport, Feeder - any national airport that serves communities and towns with limited traffic.

Airport, National - airport owned, operated and maintained by the National Government.

Airport, Secondary - any national airport that serves the principal towns and cities with regular traffic density.

Airport Traffic - this term is used to indicate one or both of the following: a) aircraft movements; b) passengers, freight and mail departing; and c) transiting or arriving at airports.

Bridge - a structure across a waterway or other opening serving as a pathway and/or roadway with a minimum clear span of six (6) meters.

Cargo - refers to any property carried/transported other than mail.  Cargoes are categorized as follows:
     a) Breakbulk - cargo that is handled in units, packages, crates, bags, and the like;
     b) Bulk - cargo that is unpacked or undivided into parts and handled in mass.  It may come in any of the following forms: solid, pulverized, liquid, semi-liquid and gas; and,
     c) Containerized - cargo packed in vans or containers for easy handling and transporting of the same as a unit.

Freight - the price paid to a ship owner for the transportation of goods or merchandise by sea from one specific port to another.  The word "freight" is also used to denote goods which are in the process of being transported from one place to another.

License - an authority issued by the Land Transportation Office (LTO) to a person who is qualified to operate a vehicle.  Professional Driver's - an authority, embodied in a form prescribed by the LTO, of a person to operate a private or public utility vehicle for compensation.  Non-Professional Driver's - an authority embodied in a form prescribed by the LTO, of a person to operate vehicles, except public utility vehicles, without compensation.

Mail - dispatches of correspondence and other objects tendered by and intended for delivery by means of the postal service.

Mail Carrier - refers to a person employed to deliver mail.

Mails, Delivered - mails distributed in the locality through letter carriers through the use of post office (P.O.) boxes.

Mails, First Class - include mails coming from other countries and outgoing to foreign countries.

Mails, Posted - mails received from windows, counters, lobby dropboxes and streetboxes.

Mails, Second Class - include all newspapers and other publications entered/registered as 2nd class mail matters.

Mails, Third Class - include all matters not declared non-mailable by law or regulation and not classified as first and second class mails.

Motor Vehicles, Diplomatic - motor vehicles owned by foreign governments or by their duly accredited diplomatic officials in the Philippines.  the registration thereof must be supported by communications from the Department of Foreign Affairs.

Motor Vehicles, Government - motor vehicles owned by the Government of the Philippines or any of its political subdivisions.

Motor Vehicles, Private - motor vehicles registered not to be used for hire under any circumstances.  Private motor vehicles are classified into the same denominations as that of For-Hire Motor Vehicles except for taxicabs.

Passengers, Disembarked - passengers whose air journey terminate at the reporting airport or passengers who will continue their air journey but in a different aircraft.

Passengers, Embarked - passengers whose air journey begins at the reporting airport and disembarked passengers who change to a different aircraft at the same airport to continue their air journey.

Passengers, Transit - air travelers coming from different port of departures who stay at the airport for brief periods, usually one hour, with the intention of proceeding to their first port of destination.

Pier - a structure built into the sea but not parallel to the coastline and includes any stage, stair, landing space, landing stage, jetty, floating barge or pontoon and any bridge or other works connected therewith.

Port - a sheltered harbor where marine terminal facilities are provided, consisting of piers or wharves at which ships berth/dock while loading or unloading cargo, transit sheds and other storage areas where ships may discharge incoming cargo, and warehouses where goods may be stored for longer periods while awaiting distribution or sailing.

Port, Commercial Private - ports which are owned and operated by private entities, constructed primarily to serve the needs of the owners.

Port, Commercial Public - ports which are owned ad operated by the government, constructed primarily to serve the needs of the general public, and generally cater to vessels of more than 30 tonnage.

Port, Feeder - a port constructed primarily to provide linkages among neighboring small islands and nearby urban centers.  This port generally caters to small passenger and fishing vessels.

Port, Fishing - a port which primarily serves the fishing industry, either within the area, or may be regional in scope, servicing the main collection and distribution center for fish.

Port of Entry - designated location where foreign goods and foreign citizens may be cleared through a custom house.

Radio Stations - one or more transmitters or receivers or a combination of transmitters and receivers including the accessory equipment, necessary at one location for carrying on a radio communication service.  each station shall be classified by the service in which it operates permanently or temporarily.

Roads, Barangay - all roads existing and to be constructed outside the city/municipality/poblacion limits.

Roads, Municipal - roads within a municipality which are not categorized as provincial, national or barangay.

Roads, National Primary - roads which form part of the main trunkline systems continuous in extent; roads which are now declared national roads except those for forming part of the continuous system, such as roads leading to national airports, seaports and parks, etc.; or coast-to-coast roads not forming part of the trunkline system of principal traffic route.

Roads, National Secondary - roads which include all access to national ports, airports and parks, city roads and streets forming secondary trunkline system.

Telephone Density - the ratio of the number of telephones to total population at a given date.  It is expressed as the number of telephone main stations per 100 persons.

Telephone Main Station - an access point to the public switched telephone network.  A single line, a single party on a party line, or a trunk line of a private branch exchange (PBX) is counted as one main station.

Telegraph Station - a telecommunication station which is concerned with the transmission/reception of messages by means of the Morse Code.

Vessel - includes any ship or boat or any description of a vessel or boat, or any artificial contivance used or capable of being used as a means of transportation on water.s

Vessel, Cargo - a vessel designed and built primarily for the carriage of cargo although it may carry passengers under existing law not to exceed twelve in addition to the crew.

Vessel, Liner - a vessel which plies regular trade route and sailing schedule.

Vessel, Coastwise - ships whose routes cover ports of the same country along the same coast.