Speed Limit Laws: Nevada
Rural Interstates: Cars (MPH)
80
Speeding and Aggressive Driving
Speed Limits
Setting speed limits has traditionally been the responsibility of states, except for the period of 1973-1994. During that time, the federal government enacted mandatory speed limit ceilings on interstate highways and similar limited access roads through a National Maximum Speed Limit.
Congress repealed the National Maximum Speed Limit in 1995. Since then, 41 states have raised speed limits to 70 mph or higher on some portion of their roadway systems.
In many states, maximum speeds vary depending on vehicle type (car or truck), roadway location (urban or rural), or time of day. GHSA tracks state maximum speed limits for both urban and rural interstates, as well as other limited access roads.
In a few states, speed limits are not set by law.
Aggressive Driving
The term aggressive driving covers a range of unsafe driver behaviors. State laws define what constitutes aggressive driving and stipulate the related fines and penalties. Often, a driver must demonstrate more than one action to be considered aggressive.
To date, 15 states have addressed aggressive driving in their legislatures.
11 states have passed laws specifically defining aggressive driving actions.
- California and Utah have amended existing reckless driving laws to include actions similar to those defined as "aggressive" by other states.
- Pennsylvania has passed a resolution against aggressive driving.
- New Jersey enforces agressive driving under existing laws.
NOTE: GHSA does not compile any additional data on speed limit or aggressive driving laws other than what is presented here. For more information, consult the appropriate State Highway Safety Office (SHSO).
Sources: National Conference of State Legislatures (NCSL), Insurance Institute for Highway Safety (IIHS) and SHSOs.
Laws last reviewed by SHSOs in March 2024.
Short Term Description
GHSA tracks speed limits for both urban and rural interstates, as well as other limited access roads. In addition, GHSA tracks state aggressive driving laws, which cover a range of unsafe driver behaviors.
Wyoming
Rural Interstates: Cars (MPH)
75 (80 on specified segments)
Wyoming
Rural Interstates: Trucks (MPH)
75 (80 on specified segments)
Wyoming
Urban Interstates: Cars (MPH)
75 (80 on specified segments)
Wyoming
Urban Interstates: Trucks (MPH)
75 (80 on specified segments)
Wyoming
Other Limited Access Roads: Cars (MPH)
65 (70 on specified segments)
Wyoming
Other Limited Access Roads: Trucks (MPH)
65 (70 on specified segments)
Wisconsin
Urban Interstates: Cars (MPH)
70
Wisconsin
Urban Interstates: Trucks (MPH)
70
Wisconsin
Other Limited Access Roads: Cars (MPH)
70
Wisconsin
Other Limited Access Roads: Trucks (MPH)
70
Wisconsin
Rural Interstates: Cars (MPH)
70
Wisconsin
Rural Interstates: Trucks (MPH)
70
West Virginia
Rural Interstates: Cars (MPH)
70 (West Virginia speed limits, in general, are not set by law, but by the Commissioner of the Division of Highways.)
West Virginia
Rural Interstates: Trucks (MPH)
70 (West Virginia speed limits, in general, are not set by law, but by the Commissioner of the Division of Highways.)
West Virginia
Urban Interstates: Cars (MPH)
60 or 65 (West Virginia speed limits, in general, are not set by law, but by the Commissioner of the Division of Highways)
West Virginia
Urban Interstates: Trucks (MPH)
60 or 65 (West Virginia speed limits, in general, are not set by law, but by the Commissioner of the Division of Highways)
West Virginia
Other Limited Access Roads: Cars (MPH)
65 (West Virginia speed limits, in general, are not set by law, but by the Commissioner of the Division of Highways)
West Virginia
Other Limited Access Roads: Trucks (MPH)
65 (West Virginia speed limits, in general, are not set by law, but by the Commissioner of the Division of Highways)
Washington
Rural Interstates: Cars (MPH)
70
Washington
Rural Interstates: Trucks (MPH)
60
Washington
Urban Interstates: Cars (MPH)
60
Washington
Urban Interstates: Trucks (MPH)
60
Washington
Other Limited Access Roads: Cars (MPH)
60
Washington
Other Limited Access Roads: Trucks (MPH)
60
Virginia
Other Limited Access Roads: Cars (MPH)
65
Virginia
Other Limited Access Roads: Trucks (MPH)
65
Virginia
Rural Interstates: Cars (MPH)
70
Virginia
Rural Interstates: Trucks (MPH)
70
Virginia
Urban Interstates: Cars (MPH)
70
Virginia
Urban Interstates: Trucks (MPH)
70
Virgin Islands
Rural Interstates: Cars (MPH)
40
Virgin Islands
Rural Interstates: Trucks (MPH)
40
Virgin Islands
Urban Interstates: Cars (MPH)
55
Virgin Islands
Urban Interstates: Trucks (MPH)
55
Virgin Islands
Other Limited Access Roads: Cars (MPH)
20
Virgin Islands
Other Limited Access Roads: Trucks (MPH)
20
Vermont
Rural Interstates: Cars (MPH)
65
Vermont
Rural Interstates: Trucks (MPH)
65
Vermont
Urban Interstates: Cars (MPH)
55
Vermont
Urban Interstates: Trucks (MPH)
55
Vermont
Other Limited Access Roads: Cars (MPH)
50
Vermont
Other Limited Access Roads: Trucks (MPH)
50
Utah
Rural Interstates: Cars (MPH)
75; 80 on specified segments
Utah
Rural Interstates: Trucks (MPH)
75; 80 on specified segments
Utah
Urban Interstates: Cars (MPH)
65; 70 on specified segments
Utah
Urban Interstates: Trucks (MPH)
65; 70 on specified segments
Utah
Other Limited Access Roads: Cars (MPH)
75
Utah
Other Limited Access Roads: Trucks (MPH)
75
Texas
Rural Interstates: Cars (MPH)
75; 80 or 85 on specified segments
Texas
Rural Interstates: Trucks (MPH)
75; 80 or 85 on specified segments
Texas
Urban Interstates: Cars (MPH)
75
Texas
Urban Interstates: Trucks (MPH)
75
Texas
Other Limited Access Roads: Cars (MPH)
75
Texas
Other Limited Access Roads: Trucks (MPH)
75
Tennessee
Urban Interstates: Cars (MPH)
70
Tennessee
Urban Interstates: Trucks (MPH)
70
Tennessee
Other Limited Access Roads: Cars (MPH)
65
Tennessee
Other Limited Access Roads: Trucks (MPH)
65
Tennessee
Rural Interstates: Cars (MPH)
70
Tennessee
Rural Interstates: Trucks (MPH)
70
South Dakota
Rural Interstates: Cars (MPH)
80
South Dakota
Rural Interstates: Trucks (MPH)
80
South Dakota
Urban Interstates: Cars (MPH)
80
South Dakota
Urban Interstates: Trucks (MPH)
80
South Dakota
Other Limited Access Roads: Cars (MPH)
70
South Dakota
Other Limited Access Roads: Trucks (MPH)
70
South Carolina
Rural Interstates: Cars (MPH)
70
South Carolina
Rural Interstates: Trucks (MPH)
70
South Carolina
Urban Interstates: Cars (MPH)
70 (60 on specified segments)
South Carolina
Urban Interstates: Trucks (MPH)
70 (60 on specified segments)
South Carolina
Other Limited Access Roads: Cars (MPH)
60
South Carolina
Other Limited Access Roads: Trucks (MPH)
60
Rhode Island
Other Limited Access Roads: Cars (MPH)
55 (Rhode Island speed limits are not set by law, but by state traffic commission)
Rhode Island
Other Limited Access Roads: Trucks (MPH)
55 (Rhode Island speed limits are not set by law, but by state traffic commission)
Rhode Island
Rural Interstates: Cars (MPH)
65 (Rhode Island speed limits are not set by law, but by state traffic commission)
Rhode Island
Rural Interstates: Trucks (MPH)
65 (Rhode Island speed limits are not set by law, but by state traffic commission)
Rhode Island
Urban Interstates: Cars (MPH)
55 (Rhode Island speed limits are not set by law, but by state traffic commission)
Rhode Island
Urban Interstates: Trucks (MPH)
55 (Rhode Island speed limits are not set by law, but by state traffic commission)
Pennsylvania
Rural Interstates: Cars (MPH)
70
Pennsylvania
Rural Interstates: Trucks (MPH)
70
Pennsylvania
Urban Interstates: Cars (MPH)
70
Pennsylvania
Urban Interstates: Trucks (MPH)
70
Pennsylvania
Other Limited Access Roads: Cars (MPH)
70
Pennsylvania
Other Limited Access Roads: Trucks (MPH)
70
Oregon
Rural Interstates: Cars (MPH)
65 (70 on specified segments)
Oregon
Rural Interstates: Trucks (MPH)
65
Oregon
Urban Interstates: Cars (MPH)
55
Oregon
Urban Interstates: Trucks (MPH)
55
Oregon
Other Limited Access Roads: Cars (MPH)
65
Oregon
Other Limited Access Roads: Trucks (MPH)
65
Oklahoma
Rural Interstates: Cars (MPH)
75
Oklahoma
Rural Interstates: Trucks (MPH)
75
Oklahoma
Urban Interstates: Cars (MPH)
70
Oklahoma
Urban Interstates: Trucks (MPH)
70
Oklahoma
Other Limited Access Roads: Cars (MPH)
70
Oklahoma
Other Limited Access Roads: Trucks (MPH)
70
Ohio
Rural Interstates: Cars (MPH)
70
Ohio
Rural Interstates: Trucks (MPH)
70
Ohio
Urban Interstates: Cars (MPH)
65
Ohio
Urban Interstates: Trucks (MPH)
65
Ohio
Other Limited Access Roads: Cars (MPH)
70
Ohio
Other Limited Access Roads: Trucks (MPH)
70
Northern Mariana Islands
Urban Interstates: Cars (MPH)
45
Northern Mariana Islands
Urban Interstates: Trucks (MPH)
25
Northern Mariana Islands
Other Limited Access Roads: Cars (MPH)
n/a
Northern Mariana Islands
Other Limited Access Roads: Trucks (MPH)
n/a
Northern Mariana Islands
Rural Interstates: Cars (MPH)
n/a
Northern Mariana Islands
Rural Interstates: Trucks (MPH)
n/a
North Dakota
Rural Interstates: Cars (MPH)
75
North Dakota
Rural Interstates: Trucks (MPH)
75
North Dakota
Urban Interstates: Cars (MPH)
75
North Dakota
Urban Interstates: Trucks (MPH)
75
North Dakota
Other Limited Access Roads: Cars (MPH)
4-lane: 70 Other: 65
North Dakota
Other Limited Access Roads: Trucks (MPH)
4-lane: 70 Other: 65
North Carolina
Rural Interstates: Cars (MPH)
70
North Carolina
Rural Interstates: Trucks (MPH)
70
North Carolina
Urban Interstates: Cars (MPH)
70
North Carolina
Urban Interstates: Trucks (MPH)
70
North Carolina
Other Limited Access Roads: Cars (MPH)
70
North Carolina
Other Limited Access Roads: Trucks (MPH)
70
New York
Other Limited Access Roads: Cars (MPH)
55
New York
Other Limited Access Roads: Trucks (MPH)
55
New York
Rural Interstates: Cars (MPH)
65
New York
Rural Interstates: Trucks (MPH)
65
New York
Urban Interstates: Cars (MPH)
55
New York
Urban Interstates: Trucks (MPH)
55
New Mexico
Rural Interstates: Cars (MPH)
75
New Mexico
Rural Interstates: Trucks (MPH)
75
New Mexico
Urban Interstates: Cars (MPH)
75
New Mexico
Urban Interstates: Trucks (MPH)
75
New Mexico
Other Limited Access Roads: Cars (MPH)
65
New Mexico
Other Limited Access Roads: Trucks (MPH)
65
New Jersey
Rural Interstates: Cars (MPH)
65
New Jersey
Rural Interstates: Trucks (MPH)
65
New Jersey
Urban Interstates: Cars (MPH)
55
New Jersey
Urban Interstates: Trucks (MPH)
55
New Jersey
Other Limited Access Roads: Cars (MPH)
65
New Jersey
Other Limited Access Roads: Trucks (MPH)
65
New Hampshire
Rural Interstates: Cars (MPH)
65 (70 on specified segments)
New Hampshire
Rural Interstates: Trucks (MPH)
65 (70 on specified segments)
New Hampshire
Urban Interstates: Cars (MPH)
65 (70 on specified segments)
New Hampshire
Urban Interstates: Trucks (MPH)
65 (70 on specified segments)
New Hampshire
Other Limited Access Roads: Cars (MPH)
55 (70 on specified segments)
New Hampshire
Other Limited Access Roads: Trucks (MPH)
55 (70 on specified segments)
Nevada
Rural Interstates: Cars (MPH)
80
Nevada
Rural Interstates: Trucks (MPH)
80
Nevada
Urban Interstates: Cars (MPH)
65
Nevada
Urban Interstates: Trucks (MPH)
65
Nevada
Other Limited Access Roads: Cars (MPH)
70
Nevada
Other Limited Access Roads: Trucks (MPH)
70
Nebraska
Urban Interstates: Cars (MPH)
70
Nebraska
Urban Interstates: Trucks (MPH)
70
Nebraska
Other Limited Access Roads: Cars (MPH)
70
Nebraska
Other Limited Access Roads: Trucks (MPH)
70
Nebraska
Rural Interstates: Cars (MPH)
75
Nebraska
Rural Interstates: Trucks (MPH)
75
Montana
Rural Interstates: Cars (MPH)
80
Montana
Rural Interstates: Trucks (MPH)
70
Montana
Urban Interstates: Cars (MPH)
65
Montana
Urban Interstates: Trucks (MPH)
65
Montana
Other Limited Access Roads: Cars (MPH)
Day: 70 Night: 65
Montana
Other Limited Access Roads: Trucks (MPH)
Day: 70 (Light Trucks), 60 (Heavy Trucks) Night: 65 (Light Trucks), 55 (Heavy Trucks)
Missouri
Rural Interstates: Cars (MPH)
70
Missouri
Rural Interstates: Trucks (MPH)
70
Missouri
Urban Interstates: Cars (MPH)
60
Missouri
Urban Interstates: Trucks (MPH)
60
Missouri
Other Limited Access Roads: Cars (MPH)
70
Missouri
Other Limited Access Roads: Trucks (MPH)
70
Mississippi
Other Limited Access Roads: Cars (MPH)
70
Mississippi
Other Limited Access Roads: Trucks (MPH)
70
Mississippi
Rural Interstates: Cars (MPH)
70
Mississippi
Rural Interstates: Trucks (MPH)
70
Mississippi
Urban Interstates: Cars (MPH)
70
Mississippi
Urban Interstates: Trucks (MPH)
70
Minnesota
Rural Interstates: Cars (MPH)
70
Minnesota
Rural Interstates: Trucks (MPH)
70
Minnesota
Urban Interstates: Cars (MPH)
65
Minnesota
Urban Interstates: Trucks (MPH)
65
Minnesota
Other Limited Access Roads: Cars (MPH)
65
Minnesota
Other Limited Access Roads: Trucks (MPH)
65
Michigan
Rural Interstates: Cars (MPH)
70 (75 on select segments)
Michigan
Rural Interstates: Trucks (MPH)
65
Michigan
Urban Interstates: Cars (MPH)
70
Michigan
Urban Interstates: Trucks (MPH)
60; 55 if speed limit for cars is less than 70 MPH
Michigan
Other Limited Access Roads: Cars (MPH)
70
Michigan
Other Limited Access Roads: Trucks (MPH)
60; 55 if speed limit for cars is less than 70 MPH
Massachusetts
Rural Interstates: Cars (MPH)
65
Massachusetts
Rural Interstates: Trucks (MPH)
65
Massachusetts
Urban Interstates: Cars (MPH)
65
Massachusetts
Urban Interstates: Trucks (MPH)
65
Massachusetts
Other Limited Access Roads: Cars (MPH)
65
Massachusetts
Other Limited Access Roads: Trucks (MPH)
65
Maryland
Rural Interstates: Cars (MPH)
70
Maryland
Rural Interstates: Trucks (MPH)
70
Maryland
Urban Interstates: Cars (MPH)
70
Maryland
Urban Interstates: Trucks (MPH)
70
Maryland
Other Limited Access Roads: Cars (MPH)
55
Maryland
Other Limited Access Roads: Trucks (MPH)
55
Maine
Urban Interstates: Cars (MPH)
75
Maine
Urban Interstates: Trucks (MPH)
75
Maine
Other Limited Access Roads: Cars (MPH)
75
Maine
Other Limited Access Roads: Trucks (MPH)
75
Maine
Rural Interstates: Cars (MPH)
75
Maine
Rural Interstates: Trucks (MPH)
75
Louisiana
Rural Interstates: Cars (MPH)
75
Louisiana
Rural Interstates: Trucks (MPH)
75
Louisiana
Urban Interstates: Cars (MPH)
70
Louisiana
Urban Interstates: Trucks (MPH)
70
Louisiana
Other Limited Access Roads: Cars (MPH)
70
Louisiana
Other Limited Access Roads: Trucks (MPH)
70
Kentucky
Rural Interstates: Cars (MPH)
65 (70 on specific segments based on an engineering and traffic investigation)
Kentucky
Rural Interstates: Trucks (MPH)
65 (70 on specific segments based on an engineering and traffic investigation)
Kentucky
Urban Interstates: Cars (MPH)
65
Kentucky
Urban Interstates: Trucks (MPH)
65
Kentucky
Other Limited Access Roads: Cars (MPH)
65
Kentucky
Other Limited Access Roads: Trucks (MPH)
65
Kansas
Other Limited Access Roads: Cars (MPH)
70
Kansas
Other Limited Access Roads: Trucks (MPH)
70
Kansas
Rural Interstates: Cars (MPH)
75
Kansas
Rural Interstates: Trucks (MPH)
75
Kansas
Urban Interstates: Cars (MPH)
70
Kansas
Urban Interstates: Trucks (MPH)
70
Iowa
Rural Interstates: Cars (MPH)
70
Iowa
Rural Interstates: Trucks (MPH)
70
Iowa
Urban Interstates: Cars (MPH)
70
Iowa
Urban Interstates: Trucks (MPH)
70
Iowa
Other Limited Access Roads: Cars (MPH)
55
Iowa
Other Limited Access Roads: Trucks (MPH)
55
Indiana
Rural Interstates: Cars (MPH)
70
Indiana
Rural Interstates: Trucks (MPH)
65
Indiana
Urban Interstates: Cars (MPH)
55
Indiana
Urban Interstates: Trucks (MPH)
55
Indiana
Other Limited Access Roads: Cars (MPH)
60
Indiana
Other Limited Access Roads: Trucks (MPH)
60
Illinois
Rural Interstates: Cars (MPH)
70
Illinois
Rural Interstates: Trucks (MPH)
70
Illinois
Urban Interstates: Cars (MPH)
55
Illinois
Urban Interstates: Trucks (MPH)
55
Illinois
Other Limited Access Roads: Cars (MPH)
65
Illinois
Other Limited Access Roads: Trucks (MPH)
55
Idaho
Rural Interstates: Cars (MPH)
75, 80 on specified segments
Idaho
Rural Interstates: Trucks (MPH)
70
Idaho
Urban Interstates: Cars (MPH)
75, 80 on specified segments
Idaho
Urban Interstates: Trucks (MPH)
65
Idaho
Other Limited Access Roads: Cars (MPH)
70
Idaho
Other Limited Access Roads: Trucks (MPH)
70
Hawaii
Urban Interstates: Cars (MPH)
60
Hawaii
Urban Interstates: Trucks (MPH)
60
Hawaii
Other Limited Access Roads: Cars (MPH)
55
Hawaii
Other Limited Access Roads: Trucks (MPH)
55
Hawaii
Rural Interstates: Cars (MPH)
60
Hawaii
Rural Interstates: Trucks (MPH)
60
Guam
Rural Interstates: Cars (MPH)
Guam does not have any interstates. The maximum speed limits for cars and trucks are: 35 in rural areas; 15 in residential areas; and 15 or 25 in school zones.
Georgia
Rural Interstates: Cars (MPH)
70 (Georgia's "Super Speeder Law" adds on $200 in state fees for any driver convicted of speeding at 75 MPH or higher on any two-lane roads or 85 MPH or higher on multiple lane roads anywhere in the state.)
Georgia
Rural Interstates: Trucks (MPH)
70 (Georgia's "Super Speeder Law" adds on $200 in state fees for any driver convicted of speeding at 75 MPH or higher on any two-lane roads or 85 MPH or higher on multiple lane roads anywhere in the state.)
Georgia
Urban Interstates: Cars (MPH)
70 (Georgia's "Super Speeder Law" adds on $200 in state fees for any driver convicted of speeding at 75 MPH or higher on any two-lane roads or 85 MPH or higher on multiple lane roads anywhere in the state.)
Georgia
Urban Interstates: Trucks (MPH)
70 (Georgia's "Super Speeder Law" adds on $200 in state fees for any driver convicted of speeding at 75 MPH or higher on any two-lane roads or 85 MPH or higher on multiple lane roads anywhere in the state.)
Georgia
Other Limited Access Roads: Cars (MPH)
65 (Georgia's "Super Speeder Law" adds on $200 in state fees for any driver convicted of speeding at 75 MPH or higher on any two-lane roads or 85 MPH or higher on multiple lane roads anywhere in the state.)
Georgia
Other Limited Access Roads: Trucks (MPH)
65 (Georgia's "Super Speeder Law" adds on $200 in state fees for any driver convicted of speeding at 75 MPH or higher on any two-lane roads or 85 MPH or higher on multiple lane roads anywhere in the state.)
Florida
Rural Interstates: Cars (MPH)
70
Florida
Rural Interstates: Trucks (MPH)
70
Florida
Urban Interstates: Cars (MPH)
65
Florida
Urban Interstates: Trucks (MPH)
65
Florida
Other Limited Access Roads: Cars (MPH)
70
Florida
Other Limited Access Roads: Trucks (MPH)
70
District of Columbia
Other Limited Access Roads: Trucks (MPH)
n/a
District of Columbia
Rural Interstates: Cars (MPH)
55
District of Columbia
Rural Interstates: Trucks (MPH)
55
District of Columbia
Urban Interstates: Cars (MPH)
n/a
District of Columbia
Urban Interstates: Trucks (MPH)
n/a
District of Columbia
Other Limited Access Roads: Cars (MPH)
n/a
Delaware
Rural Interstates: Cars (MPH)
65
Delaware
Rural Interstates: Trucks (MPH)
65
Delaware
Urban Interstates: Cars (MPH)
55
Delaware
Urban Interstates: Trucks (MPH)
55
Delaware
Other Limited Access Roads: Cars (MPH)
65
Delaware
Other Limited Access Roads: Trucks (MPH)
65
Connecticut
Rural Interstates: Trucks (MPH)
65
Connecticut
Urban Interstates: Cars (MPH)
55
Connecticut
Urban Interstates: Trucks (MPH)
55
Connecticut
Other Limited Access Roads: Cars (MPH)
65
Connecticut
Other Limited Access Roads: Trucks (MPH)
65
Connecticut
Rural Interstates: Cars (MPH)
65
Colorado
Rural Interstates: Cars (MPH)
75
Colorado
Rural Interstates: Trucks (MPH)
75
Colorado
Urban Interstates: Cars (MPH)
65
Colorado
Urban Interstates: Trucks (MPH)
65
Colorado
Other Limited Access Roads: Cars (MPH)
65
Colorado
Other Limited Access Roads: Trucks (MPH)
65
California
Rural Interstates: Cars (MPH)
70
California
Rural Interstates: Trucks (MPH)
55
California
Urban Interstates: Cars (MPH)
65
California
Urban Interstates: Trucks (MPH)
55
California
Other Limited Access Roads: Cars (MPH)
70
California
Other Limited Access Roads: Trucks (MPH)
55
Arkansas
Urban Interstates: Trucks (MPH)
65 (60 on specified roads)
Arkansas
Other Limited Access Roads: Cars (MPH)
75
Arkansas
Other Limited Access Roads: Trucks (MPH)
75
Arkansas
Rural Interstates: Cars (MPH)
75
Arkansas
Rural Interstates: Trucks (MPH)
70
Arkansas
Urban Interstates: Cars (MPH)
65 (60 on specified roads)
Arizona
Rural Interstates: Cars (MPH)
75
Arizona
Rural Interstates: Trucks (MPH)
75
Arizona
Urban Interstates: Cars (MPH)
65
Arizona
Urban Interstates: Trucks (MPH)
65
Arizona
Other Limited Access Roads: Cars (MPH)
65
Arizona
Other Limited Access Roads: Trucks (MPH)
65
Alaska
Rural Interstates: Cars (MPH)
55 (65 on select interstate routes by engineering investigation and case by case, not automatic or default)
Alaska
Rural Interstates: Trucks (MPH)
55 (65 on select interstate routes by engineering investigation and case by case, not automatic or default)
Alaska
Urban Interstates: Cars (MPH)
55 (65 on select interstate routes by engineering investigation and case by case, not automatic or default)
Alaska
Urban Interstates: Trucks (MPH)
55 (65 on select interstate routes by engineering investigation and case by case, not automatic or default)
Alaska
Other Limited Access Roads: Cars (MPH)
55
Alaska
Other Limited Access Roads: Trucks (MPH)
55
Alabama
Other Limited Access Roads: Trucks (MPH)
65
Alabama
Rural Interstates: Cars (MPH)
70
Alabama
Rural Interstates: Trucks (MPH)
70
Alabama
Urban Interstates: Cars (MPH)
65
Alabama
Urban Interstates: Trucks (MPH)
65
Alabama
Other Limited Access Roads: Cars (MPH)
65
Speed Limit Laws: Nebraska
Rural Interstates: Cars (MPH)
75
Speed Limit Laws: Montana
Rural Interstates: Cars (MPH)
80
Speed Limit Laws: Missouri
Rural Interstates: Cars (MPH)
70
Speed Limit Laws: Mississippi
Rural Interstates: Cars (MPH)
70
Speed Limit Laws: Minnesota
Rural Interstates: Cars (MPH)
70
Speed Limit Laws: Michigan
Rural Interstates: Cars (MPH)
70 (75 on select segments)
Speed Limit Laws: Massachusetts
Rural Interstates: Cars (MPH)
65
Speed Limit Laws: Maryland
Rural Interstates: Cars (MPH)
70
Speed Limit Laws: Maine
Rural Interstates: Cars (MPH)
75