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Barriers to entry: In theories of competition in economics, a barrier to entry, or an economic barrier to entry, is a fixed cost that must be incurred by a new entrant, regardless of production or sales activities, into a market that incumbents do not have or have not had to incur. Because barriers to entry protect incumbent firms and restrict competition in a market, they can contribute to distortionary prices and are therefore most important when discussing antitrust policy.
Barrier island: Barrier islands are coastal landforms and a type of dune system that are exceptionally flat or lumpy areas of sand that form by wave and tidal action parallel to the mainland coast. They usually occur in chains, consisting of anything from a few islands to more than a dozen.
Barriere, British Columbia: Barriere is a district municipality in central British Columbia, Canada, located 66 km (41 mi) north of the larger city of Kamloops on Highway 5. It is situated at the confluence of the Barrière River (St́yelltsecwétkwe in Secwepemctsín) and North Thompson Rivers in the Central North Thompson Valley.
Barrier transfer machine: A barrier transfer machine, also known as zipper machine or road zipper, is a heavy vehicle used to transfer concrete lane dividers, such as jersey barriers, which are used to relieve traffic congestion during rush hours. Many other cities use them temporarily during construction work.