visual warning system
61Emergency vehicle lighting — refers to any of several visual warning devices, which may be known as light bars or beacons, fitted to a vehicle and used when the driver wishes to convey to other road users the urgency of their journey, to provide additional warning of a… …
62Railway signal — Not to be confused with Railway signalling. A signal is a mechanical or electrical device erected beside a railway line to pass information relating to the state of the line ahead to train/engine drivers. The driver interprets the signal s… …
63Carrier air wing — This article is about the naval unit. For the video game, see Carrier Air Wing. Aircraft from Carrier Air Wing Two fly in formation above the USS Abraham Lincoln. A Carrier Air Wing (abbreviated CVW) is an operational naval aviation organization… …
64JF-17 Thunder — infobox Aircraft name = JF 17 Thunder FC 1 Fierce Dragon type = Multirole fighter manufacturer = Chengdu Aircraft Industry Corporation Pakistan Aeronautical Complex caption = JF 17 in the testing phase 2006 designer = first flight = 25 August… …
65Supernova — This article is about the astronomical event. For other uses, see Supernova (disambiguation). Multiwavelength X ray, infrared, and optical compilation image of Kepler s supernova remnant, SN 1604. A supernova is a stellar explosion that is more… …
66HAL Tejas — infobox Aircraft name =Tejas type =Multirole fighter manufacturer =Aeronautical Development Agency Hindustan Aeronautics Limited caption = Pair of Tejas flying in formation designer = first flight =4 January 2001 introduction =Planned by 2010/11… …
67CEN 1789 — infobox country common name = European Union capital = Brussels, Belgium area km2 = area sq mi = population estimate = population estimate year = population census = population census year = population density km2 = population density sq mi = CEN …
68Defence Research and Development Organisation — Sanskrit: बलस्य मूलं विज्ञानम् Strength s Origin is in Science [1] Agency overvi …
69Cab signalling — is a railroad safety system that communicates track status information to the train cab (driving position), where the engineer or driver can see the information. The simplest systems display the trackside signal aspect (typically, green, yellow… …
70air warfare — Military operations conducted by airplanes, helicopters, or other aircraft against aircraft or targets on the ground and in the water. Air warfare did not become important until World War I (1914–18). The British, French, German, Russian, and… …
