Regulation of nanotechnology — Due to the ongoing argument on the implications of nanotechnology, there is significant debate related to the question of whether nanotechnology or nanotechnology based products merit special government regulation. This debate is related to the… … Wikipedia
Variable-message sign — Sign over Interstate 94 in Saint Paul, Minnesota, advising of a road blockage during a winter storm … Wikipedia
Warning sign — redirects here. For other uses, see Warning Sign (disambiguation). For a sign on a vehicle or building relating to it or its contents, see placard. A traffic warning sign is a type of traffic sign that indicates a hazard ahead on the road that… … Wikipedia
Traffic sign — Most countries post signage, known as traffic signs or road signs, at the side of roads to impart information to road users. Since language differences can create barriers to understanding, international signs using symbols in place of words have … Wikipedia
Bilingual sign — English–Chinese bilingual traffic sign in Hong Kong … Wikipedia
Mandatory sign — German mandatory road sign indicating pass on right . Mandatory signs are road signs which are used to set the obligations of all traffic which use a specific area of road. Unlike prohibitory or restrictive signs, mandatory signs tell traffic… … Wikipedia
Direction, position, or indication sign — An example of a British direction sign on the approach to a roundabout … Wikipedia
Prohibitory traffic sign — Prohibitory traffic signs Prohibitory traffic signs are used to prohibit certain types of manoeuvres or some types of traffic. Contents 1 Prohibitory traffic signs … Wikipedia
Special-purpose acquisition company — A Special purpose acquisition company (SPAC) is a pooled investment vehicle that allows public stock market investors to invest in private equity type transactions, particularly leveraged buyouts. SPACs are shell or blank check companies that… … Wikipedia
North American call sign — Many countries have specific conventions for classifying call signs by transmitter characteristics and location. The North American call sign format for radio and television call signs follows a number of conventions. All call signs begin with a… … Wikipedia
