At the direction of Governor Corbett, the state Department of Transportation has extended a temporary waiver on certain restrictions so commercial drivers can deliver road salt supplies, according to a department news release.

"Though we are entering March, the forecasts call for more winter weather and extending the waiver for drivers of salt trucks will help us overcome the challenges a huge surge in salt demand has placed on the delivery systems," said Barry Schoch, PennDOT's Secretary, in a statement.

The waiver, now in place through March 31, extends the limits on hours of service for salt delivery drivers, PennDOT said Friday.

Drivers usually must take a mandatory rest period after 11 hours behind the wheel. Under the waiver, the limit for driving hours is extended to 14 hours.

The first waiver, put in place Feb. 3, was to expire Sunday.

Exemption also has been granted for 60/70-hour limits rule, which requires drivers to stop driving upon accumulating 60 or 70 on-duty hours over a period of seven or eight consecutive days, respectively. This includes all on-duty and driving time.

Any period of seven or eight consecutive days may end with the beginning of any off-duty period of 34 or more consecutive hours, according to PennDOT.

-Reach Eyana Adah McMillan at