Emergency Refuge Areas (ERA) at frequent intervals along the hard shoulder will be equipped with emergency phones and CCTV cameras.
The area of Driftless Area National Wildlife Refuge is 3,286,006.946424576 square meters.
The area of Chychkan Wildlife Refuge is 366 square kilometers.
The area of Chandalash Wildlife Refuge is 350 square kilometers.
The area of Patuxent Research Refuge is 51.8 square kilometers.
The area of National Elk Refuge is 101.171 square kilometers.
The area of Choctaw National Wildlife Refuge is 17.07 square kilometers.
The area of Aransas National Wildlife Refuge is 464 square kilometers.
The area of Desecheo National Wildlife Refuge is 1,456,868.312064 square meters.
The area of Waccamaw National Wildlife Refuge is 92.798 square kilometers.
The area of Bamforth National Wildlife Refuge is 4,516,291.7673984 square meters.
The area of Kootenai National Wildlife Refuge is 11.226 square kilometers.
The area of Mashpee National Wildlife Refuge is 1,382,608.49671296 square meters.