Office of Highway Policy Information - Policy | Federal Highway Administration

October 2009
Table HM-66

STATE	STRUCTURES INCLUDED?	MEASUREMENT WHEELPATH	MEASUREMENT LANE(S) 2/	HALF-CAR/ QUARTER-CAR	MEASUREMENT DIRECTION 3/
Alabama	No	Both	Outside	Quarter-car	Ascending
Alaska
Arizona	No	Both	Outside		Ascending
Arkansas	No	Both	Outside	Quarter-car	Ascending
California	No	Both		Quarter-car
Colorado		Both	Outside		Both for 4-lane and divided; NB, EB off-system
Connecticut	Yes	Both	Outside	Quarter-car	Both; NB, EB Ascending
Delaware		Both	Outside (mostly)	Quarter-car	Ascending
Dist. of Columbia
Florida	No	Both	Outside (mostly)	Quarter-car	One direction for total system
Georgia	No	Both	Outside	Half-car
Hawaii	Yes	Both	Outside	Quarter-car	Ascending; Both for divided
Idaho	Yes	Right	Outside	Quarter-car	Varies; Both for divided
Illinois	No	Both	Outside (mostly)	Quarter-car	SB, EB; Both for divided
Indiana
Iowa	No	Both		Quarter-car	Both for divided; NB, EB other
Kansas	No	Right	Outside	Quarter-car	Varies
Kentucky	No	Both	Outside	Quarter-car	Both
Louisiana	No	Both	Outside		Ascending
Maine	Yes	Both	Outside	Half-car	Varies
Maryland	Yes	Both	Outside
Massachusetts	No	Both	Outside	Half-car	Both for divided
Michigan
Minnesota	Yes	Both	Outside	Quarter-car	Both
Mississippi	Yes	Both	Outside	Quarter-car	NB, EB; Both for divided
Missouri
Montana	Yes	Both	Outside	Quarter-car	Ascending
Nebraska	Yes	Right	Outside	Quarter-car	Both for 4-lane; varies for 2-lane
Nevada
New Hampshire
New Jersey	Yes	Both	Outside	Half-car	Both; varies
New Mexico	No	Both	Outside	Quarter-car	Both for divided; Ascending 2-lane/way
New York	No	Both	Outside (mostly)	Quarter-car	Both for Interstate; NB, EB other (mostly)
North Carolina
North Dakota	Yes	Both	Outside	Quarter-car	Both for 4-lane; varies for 2-lane
Ohio	No	Both	Outside	Quarter-car	Both for divided; varies for other
Oklahoma
Oregon	No	Both	Outside	Quarter-car	Ascending for Interstate; varies for other
Pennsylvania	No	Both	Outside	Quarter-car	Varies for other; Both for divided
Rhode Island	Yes			Quarter-car
South Carolina			Outside
South Dakota	Yes	Both	Outside	Quarter-car	All; outside lanes for divided
Tennessee	No	Both	Outside	Quarter-car	Both for Interstate; Ascending for other
Texas	Yes	Both	Varies	Quarter-car	Varies
Utah	No	Both	Outside	Quarter-car	Both for Interstate and divided; consistent for other
Vermont	No	Right	Outside	Quarter-car	Ascending
Virginia
Washington	No	Both	Outside	Quarter-car	Both for divided; varies for other
West Virginia	No	Both	Outside	Quarter-car	NB, EB
Wisconsin	Yes	Left	Outside	Quarter-car	NB, EB
Wyoming	Yes	Both	Outside	Half-car	Ascending
Puerto Rico		Both		Half-car

1/ Information in this table is intended to represent State data collection and HPMS reporting practices as submitted to FHWA and may not necessarily reflect practices used for other State purposes.

2/ The outside lane is typically the rightmost lane on multi-lane facilities in the direction of travel.

3/ NB=Northbound, SB=Southbound, EB=Eastbound, WB=Westbound. Ascending=direction of increasing or ascending milepoints.