The recorders provide data on such things as speed, braking and emergency applications.

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His client's decision to trigger the emergency brake lowered the train's speed to 45 miles per hour from 73 mph and likely saved lives, Mr. Cahill said.

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Race for Water, in the lead at that point in the race, was forced to reduce speed to inspect the damage and initiate emergency repairs.

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Tom Swozzi, mayor of the city of Glen Cove on Long Island, New York, ordered high-speed ferries put to use to transport paramedics, emergency medical technicians, nurses and doctors to relieve New York doctors.

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In an earlier emergency statement to the Commons, Mr Blunkett had conceded that the speed with which the intruders were able to scale the wall was "of concern".

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Since the primary waves travel more quickly than the comparatively sluggish secondary waves, the system picks up on the magnitude and speed at which the quake is approaching, and beams the data over fiber optic networks to emergency relay stations setup in corporate towers, governmental buildings, hospitals, and transportation venues such as railways.

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