UPDATED, Jan. 9, 2013, 9:45 a.m., EST -- Extraordinarily cold weather in parts of the U.S. has resulted in more states issuing emergency declarations, waiving mainly hours of service rules, when it comes to delivering various fuels.

The Ohio Public Utilities Commission on Monday issued a waiver of HOS regulations for truckers hauling, motor fuels, propane and home heating oil. It is in effect through Jan. 10.

The Missouri Department of Public Safety has issued a special waiver when it comes to hours of service regulations involving in emergency relief efforts. It is in effect through Jan. 13.

Oklahoma Gov. Mary Fallin has issued a waiver of federal hours of service rules for those huling propane that is in effect through Feb. 5.

In Arkansas, Gov. Mike Bebe has issued an order waiving hours of service rules for propane. It is in effect until Jan. 17 or until emergency conditions no long exist, whichever is sooner. 

In Maine, Gov. Paul LePage has issued similar orders when it comes to deliveries of propane as well as other fuels, including diesel. The order is an extension of one issued in mid-December and is in effect through Jan. 18. 

Massachusetts Gov. Deval Patrick on Jan. 2 issued a waiver of hours of service rules for those delivering most fuels. It is in effect through Jan. 7.

There are three orders in New Jersey. One was issued Jan. 2 by Gov. Chris Christie, that is a general emergency order, while one has been extended through Jan. 31, waiving hours of service for propane and other heating fuel deliveries. The third covers truckers delivering rock salt and is in effect through Feb. 8.

There is also one for Michigan that is in effect through Jan. 10 for propane shipments, along with one in Minnesota that is in effect through Jan. 8 and in New Hampshire that remains in effect through Jan 11. 

Finally, an order issued just before Christmas in Vermont remains in effect through Jan. 13, waiving hours of service rules for deliveries of propane. 

 Jan. 9, 2013, 9:45 a.m. update adds NJ rock salt waiver.

Jan. 8, 2013, 5:57 p.m update adds Ohio, Oklahoma and Missouri waivers along with New Jersey extending a current waiver.