The cold weather is to blame for the increase in demand for propane.
Governor Bill Haslam signed the executive order yesterday..
It exempts propane truck drivers in Tennessee from federal mandates.
Normally drivers moving propane aren't allowed to drive more than 11 hours a day.
For now, they're allowed to work overtime.
Chuck Bradshaw sells propane at Access Door Company on Hixson Pike, and he reccommends everyone fill up now.
"Call before that tank gets too far down. When it gets half full, it's got a gage on top, half down, call. And then you'll still have enough to run you if a trucks a week late," said Bradshaw.
Most people we spoke to say they haven't felt the shortage here yet, but there have been reports from north east Tennessee.