2 LINKEDINCOMMENTMORE

WASHINGTON (WUSA9) -- More than 150 police officers in the U.S. have been killed since 1999 after being struck by cars along a highway.

The Move Over Law requires drivers to move over and change lanes or slow down to give safe clearance and protect emergency responders. Forty-nine states have passed move over laws.

For more information on Move over laws, go to http://www.moveoveramerica.com/

Read or Share this story: http://www.wusa9.com/story/traffic/2014/05/27/move-over-law-police-officers-struck/9619289/