Because of the alleged cyber-attack.
A Department of Transportation agency posted a regional emergency declaration for 18 states and Washington, DC, "in response to the unanticipated shutdown of the Colonial pipeline system."
The declaration is designed to keep the fuel supply on the East Coast flowing.
North Carolina, South Carolina and Virginia also declared a state of emergency.
Katie Davis
HOW DID US MITIGATE GAS PRICE HIKE?
In an effort to combat disruptions to fuel supply across the US, the government relaxed rules on fuel being transported by road on Sunday.
This allowed drivers in 18 states to work extra or more flexible hours when transporting products.