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Open outcry is a method of communication between professionals on a stock exchange or futures exchange, typically on a trading floor. It involves shouting and the use of hand signals to transfer information primarily about buy and sell orders. [ 2 ]
ANSI Z35.1 the Specifications for Accident Prevention Signs, [c] was an American standard that dictated the layout, colors and wording of safety signs in the United States. The standard is the first American standard that made specific demands for the design, construction, and placement of safety signage in industrial environments.
Hand signaling, also known as arb [1] or arbing (short for arbitrage), is a system of hand signals used on financial trading floors to communicate buy and sell information in an open outcry trading environment.
The standard was published in October 2003, splitting off from ISO 3864:1984, which set out design standards and colors of safety signage and merging ISO 6309:1987, Fire protection - Safety signs to create a unique and distinct standard for safety symbols.
An exit sign is a pictogram or short text in a public facility (such as a building, aircraft, or boat) marking the location of the closest emergency exit to be used in an emergency that necessitates rapid evacuation.
Portable signs can take a variety of forms, from a traffic cone with stick on letters, plastic a-frame signs, to safety signs mounted on poles with bases that enable movement. [16] Wet floor signs are also intended to avoid legal liability from injury due to failing to warn of an unsafe condition. [17] They are usually yellow. [18]