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• r  moving backward and forward along a given course
• r  alternately upward and downward

News & Articles

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• Don't Join The Walking Dead,Delaware And Pedestrian Safety
  DEWEY BEACH, Del. - While cars whiz up and down route one in Dewey Beach, Delaware, pedestrians dart across the road in what appears to be a real life game of Frogger, but nothing could be more serious."People
  July 7, 2013 - WMDT Salisbury
• More than a dozen people rescued from powerful rip currents | Video
  Lifeguards rescued dozens of swimmers from potent rip currents up and down the South Florida coast late Sunday afternoon.        
  July 7, 2013 - Sun-Sentinel
• Dozens rescued from powerful rip currents during the weekend
  Lifeguards rescued scores of swimmers from potent rip currents up and down the South Florida coast throughout the weekend.        
  July 7, 2013 - Sun-Sentinel