Portal:Highway Classifications

Highway Classifications Primer

Freeway/Expressway Classifications

• Limited and fully-controlled access
• high speed
• full grade separations
• No tolling allowed
• Standard 12 ft lane width

Class	Distance Between Interchanges	Minimum Paved Shoulder Widths	Minimum Median Width (total)	Minimum Paved Median Lane Widths	Minimum Number of Through Lanes	Illuminated On/Off Ramps
F1 Rural	2 Mi	10 ft	36 ft	3 ft (6 feet with jersey barrier)	2 lanes each way	optional
F1 Urban	1 Mi	12 ft	36 ft (or 0 with jersey barrier)	6 ft (10 feet with jersey barrier)	2 lanes each way	required
F2 Rural	2 mi	12 ft	36 ft (or 0 with jersey barrier)	6 ft (10 feet with jersey barrier)	3 lanes each way	optional
F2 Urban	1 mi	12 ft	36 ft (or 0 with jersey barrier)	6 ft (10 feet with jersey barrier)	3 lanes each way	required

Tollway/Expressway Classifications

• same as Freeway Classifications but with the allowance of tolling or e-tolling

Highway/Expressway Classifications

• Limited and partially controlled access
• high speed
• at-grade intersections