Arizona Department of Transportation officials say they've got a new message for motorists regarding dust storms that dramatically reduce visibility on highways.
Instead of focusing on what to do if caught in a dust storm, the current messaging approach is to emphasize that the best thing to do is not to drive into a dust storm.
The Arizona Daily Star (http://bit.ly/VFgy09 ) reports that department officials also say they're being more aggressive in monitoring dust and shutting down highways when visibility is poor.
Assistant Communication Director Timothy Tait says workers are being assigned at critical times to report blowing dust so highways can be closed when visibility plummets.
Problem areas for dust include Interstate 10 between Phoenix and Tucson, Interstate 40 east of Flagstaff and I-10 near the New Mexico line.