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				 Mark 
				Rosekind, head of the National Highway Traffic Safety 
				Administration, told reporters that Transportation Secretary 
				Anthony Foxx will be in Detroit to talk about administration 
				efforts to speed the introduction of self-driving vehicles. 
				 
				There is not yet a clear legal framework governing the presence 
				of driverless cars on U.S. roads. 
				 
				Automakers and technology companies such as Alphabet Inc's 
				Google have called on regulators to clarify guidelines for 
				introduction of autonomous driving technology, in part out of 
				concern that a mishap involving a self-driving car could result 
				in costly litigation. 
				 
				A Google spokesman said the company will take part in Thursday's 
				announcement by Foxx. Detroit automakers are also likely to 
				participate. 
				 
				In December, Rosekind said he opposed a "patchwork" of state 
				regulations on driverless cars and promised a "nimble, flexible" 
				approach to writing new rules for self-driving vehicles. 
				 
				Officials had said President Barack Obama might discuss advanced 
				transportation efforts in his final State of the Union Address 
				on Tuesday, but he did not. 
				 
				(Reporting by David Shepardson; Editing by Bill Rigby and 
				Clarence Fernandez) 
				
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