What are crashes?

Some articles on crashes:

Safe Clear Program - History - Results of The Program
... year after the program's implementation, found that the number of freeway crashes decreased by 10.4%, decreasing by nearly 2,000 crashes ... A study by the city found that freeway crashes decreased by over 20%, over 1,000 crashes, during the first two years it was implemented ...
Lockheed XF-104 - Operational History - Crashes
... XF-104 53-7787 was lost on 14 April 1955 after accumulating over 1,000 flying hours when test pilot Herman Salmon was forced to eject during gun firing trials at 50,000 ft (15,000 m) ... The gun malfunctioned during a test firing, and severe vibrations began to build up which knocked loose the ejection hatch below the cockpit ...
Solomon Curve - Subsequent Research
... of 2,000 vehicles on interstate highways that addressed speed variation’s impact on crashes that involved two or more vehicles ... a study in 1970 where data was collected on 114 crashes involving 216 vehicles on a state highway in Indiana to address these concerns by (1) combining automated ... of Solomon and Cirillo, but found that crashes involving turning vehicles accounted for 44 percent of all crashes observed in the study and that excluding these crashes from the analysis greatly attenuated ...
List Of Accidents And Incidents Involving Military Aircraft (1975–1999) - 1977
... 17 January Avro Vulcan B.2, XM600, of 101 Squadron, crashes at Spilsby, Lincs ... HH-52A Seaguard, 1448, strikes three electrical transmission wires and crashes into the ice-filled Illinois River ... after a refuelling stop, makes right turn, crashes into steep terrain in the Manzano Mountains, two miles S of the Four Hills housing development, killing all 20 ...