Fair warning for those folks who might be driving through AZ during our windy season. The AZ Highway dept puts up signs warning of dust blowing areas - for a darn good reason.
Dust storms out here can reduce visibility to about zero. From the AZ DPS website.
Glenn in Tucson, AZ
DPS Freeway ServiceDust Storms
Summertime brings unexpected and at times unpredictable dust storms. Dust storms are caused when high winds sweep across unplanted agricultural fields or dry desert terrain, causing dust to engulf nearby highways. Dust storms are generally brief, but must be taken seriously because of blinding conditions on the highways. Dust storms have been attributed to many collisions resulting in loss of property, injury and death.
Dust storms are more common between the May and September on Interstate 10 between Phoenix and Tucson, Interstate 10 between Benson and the New Mexico State line, and on Interstate 8 between Casa Grande and Yuma. Persons traveling during the summer and other times of year are encouraged to listen to weather reports on radio and television, especially during windy conditions. Weathermen report when dust storms are possible.
If motorists see a dust storm crossing the road or are engulfed in one, they should pull off the highway a safe distance and wait for the dusty conditions to pass. When stopped, turn off lights; set the emergency brake, and make sure the brake light is off. This will reduce the possibility of a rear-end collision.
If conditions prevent pulling off the road, proceed at an appropriately reduced speed. In this situation, turn your lights on and use the center line as a guide. Again remember never to stop on the pavement.