Alabama

Yes

Yes

Yes

Yes

Yes

Yes

Alaska

Arizona

Yes

Yes

Yes

Yes

Arkansas

Yes

Yes

Yes

Yes

Yes

California

Yes

Yes

Yes

Yes

Yes

Yes

4 sec-message display, 1 sec-message change

Colorado

NOTE: prohibits signs which have a moveable advertising face permitting any change in sign content or message

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Delaware

Yes

Yes

Yes

Yes

Yes

Yes

Florida

Yes

Yes

1500 ft on interstate

1000 ft on federal aid primary highway

Georgia

NOTE: Prohibits signs with moving or animated parts unless certain conditions are met

Yes

Yes

Yes

Yes

Yes

Yes

Conditions: Message fixed for at least 10 sec, message changed in 3 sec or less, 5,000 ft spacing, default freezing sign if malfunction occurs

Hawaii

Idaho

NOTE: adds in blue lights

Yes

Yes

Yes

Yes between displays on interstate or primary highway or public/scenic areas

1000 ft from an interchange or rest area

Yes

Exposure time is long enough at maximum speed limit for sign message to be readable and comprehensible

Illinois

Yes

Yes

Yes

Yes

Yes

Yes

Iowa

NOTE: Prohibits animated or moving parts in a sign

Yes

Yes

Yes

Yes

Yes

Tri-vision signs - 4 sec minimum display, two sec for transition

Indiana

NOTE: Prohibits animated or moving parts

Yes

Yes

Yes

Yes

Yes

Yes

Kansas

Yes

Yes

Yes

Yes

Yes

Kentucky

Prohibits animation and movement except for movement on and off of the sign

Yes

Yes

Yes

Yes

Yes

Total message displayed within 10 sec, with each segment having a display time of 2 sec including change time

Louisiana

NOTE: Statute obtained does not have information on restrictions

Signs must be readily viewed for a time of 5 sec from the roadway at posted speed limit

Maine

Michigan

Yes

Yes

Yes

Yes

Yes

Yes

Massachusetts

NOTE: Prohibitions appear to be adopted by reference incorporating federal regulations

Not more than 3 rotating or alternate messages may be displayed on a sign

Minnesota

Yes

Yes

Yes

Yes

Mississippi

Yes

Yes

Yes

Yes

Yes

Yes350 ft

Missouri

Yes

Yes

Yes

Yes

Yes

Yes

Montana

Yes

Yes

Yes

Yes

New Hampshire

NOTE: Statute has no language on any prohibitions or restrictions.

Nebraska

Yes

Yes

Yes

Nevada

Yes

Yes

Yes

Yes

Yes

Minimum display time of 6 sec, maximum change interval of 3 sec

New Mexico

NOTE: Prohibits animation or moving parts

Yes

Yes

Yes

Yes

Yes

Yes

New Jersey

NOTE: Prohibits animation and moving parts

Yes

Yes

Yes

Yes

Yes

Yes

Minimum message time, 4 sec Maximum change time, 2 sec

New York

NOTE:

Prohibits animation or moving parts except for public service announcement.

Yes

Yes

Yes

Yes

Yes

Yes

North Carolina

Yes

Yes

Yes

Yes

Yes

North Dakota

Yes

Yes

Yes

Yes

Yes

Ohio

NOTE:

No statutory information obtained

Oklahoma

Yes

Yes

Yes

Oregon

Yes

Yes

Yes

Yes

Pennsylvania

Yes

Yes

Yes

Yes

Yes

Yes

Rhode Island

Note: Prohibits animation and moving parts

Yes

Yes

Yes, 750 ft

Yes 250 ft

South Carolina

Yes

Yes

Yes

Yes

Yes

Viewing time 5 sec from roadside when traveling at speed limit

Tennessee

Yes

Yes

Yes

Yes 1000 ft

Yes 500 ft

Yes

Texas

NOTE: No statutory literature included in file

Vermont

Virginia

Yes

Yes

Yes

Yes

Yes

Washington

NOTE:

Prohibits moving parts and animation

Yes

Yes

Yes

If sign change exceed 4 sec, turn sign off during change

Washington, DC

West Virginia

Yes

Yes

Yes

Yes

Change time of 5 sec max without written approval

Wisconsin

Yes

Yes

Yes

Yes

Yes

Wyoming

Yes

Yes

Yes

Yes

Yes

Yes

Total of 42 states

36

36

15

29

28

21

22