TAMPA, Fla. (WFLA) — The Florida Department of Transportation said it deactivated emergency shoulder use (ESU) plans hours after it the plan was activated to help residents evacuate from Hurricane Ian.

FDOT said the plan would increase traffic flow and capacity on roadways.

According to FDOT, the ESU allows drivers to use the left shoulder as an extra lane in designated areas.

When the ESU is operational, all motorists expect large trucks, buses and trailers may use the shoulder as a travel lane.

FDOT said the plan keeps travel available in both directions, helping to get people out and get supplies and resources in.

The plan was in effect on Interstate 4 from Tampa to Orlando. It began near U.S. 41 in Tampa and ended near State Road 417 in Orlando, FDOT said.

The ESU was first implemented during Hurricane Irma in September 2017.

To learn more about the ESU, click here.