Motorists on U.S. Highway 26 between Madras and Mt. Hood should pay close attention to driving conditions as the Oregon Department of Transportation deploys robotic flaggers and rumble strips on a highway maintenance project northwest of Madras.  Traffic control for the project was set up Tuesday morning between mileposts 75 and 81, and will be in place for about three weeks.  Many motorists are encountering the automated flaggers for the first time and should be aware that the lowered arm across the travel lane is the signal to come to a complete stop until the arm is raised.  The rumble strips will be placed ahead of the automated flaggers to alert drivers to the upcoming work site.  The automated flaggers are operated by ODOT workers who are close by, but out of the traffic pattern, to keep them safe during such operations.