Work Zone Laws by State
The reduced work-zone speed limit and whether it bites only when workers are present or always, doubled and enhanced fines, work-zone phone rules, and the flagger's authority. Not the same as Move Over. Covers all 50 states and DC. Reference only, not legal advice.
48Enhanced-fine states
Flagger= a traffic signal
PostedReduced speed
51Jurisdictions
01
The rules
Reduced speed, heavier fines, obey the flagger
A work zone changes three things at once. The speed limit drops to whatever the orange signs post, and it holds through the whole zone. The fine climbs, most often doubled, though states split on whether that needs workers present or applies any time the zone is up. And a flagger gains the authority of a traffic signal, so their paddle is the law. Watch the "workers present" wording. It decides whether the enhanced penalty is on right now.
02
By state
Work zone rules for all 50 states and DC
Tap a state for the speed rule, the fine multiplier, the workers-present catch, the phone rule, and the flagger law.
| State | In-zone fines | Speed rule |
|---|---|---|
| Alabama AL | Doubled | Obey the posted reduced limit whenever the orange signs stand |
| Alaska AK | Doubled | The posted work-zone limit is the law once the double-fine signs are up, and the statute keys on the zone being designated, not on a crew being out |
| Arizona AZ | Doubled | The posted work-zone limit is the same whether or not workers are present, and it applies whenever the zone is signed |
| Arkansas AR | Doubled | Hold the posted work-zone limit; the reduced limit must be signed |
| California CA | Doubled | The temporary orange limit is enforceable when workers are actually present and the signs are up, posted within 400 feet of each end of the zone |
| Colorado CO | Doubled | The posted work-zone limit applies the whole time the designated zone is signed, no workers needed |
| Connecticut CT | Doubled | Obey the posted work-zone limit whenever the 'FINES DOUBLED' signs stand |
| Delaware DE | Doubled | The posted work-zone limit holds from the first cone to the last |
| District of Columbia DC | Doubled | The posted work-zone limit stands whenever the signs are up, and signs at the entrance warn of doubled fines |
| Florida FL | Doubled | Hold the posted reduced limit through the zone |
| Georgia GA | Standard | Obey the posted reduced limit through the marked zone |
| Hawaii HI | Doubled | Obey the posted construction-area limit set by the state or county |
| Idaho ID | Doubled | The posted reduced work-zone limit is a legal limit whenever the signs are standing, workers present or not |
| Illinois IL | Standard | Obey the posted reduced limit the whole time the signs stand |
| Indiana IN | Doubled | Obey the posted worksite limit, set at least 10 mph below the normal limit |
| Iowa IA | Doubled | Obey the posted work-zone limit whenever the signs are up, workers present or not |
| Kansas KS | Doubled | Obey the posted construction-zone limit while the signs stand |
| Kentucky KY | Doubled | Obey the posted reduced limit through the marked zone |
| Louisiana LA | Enhanced | Hold the posted work-zone limit |
| Maine ME | Doubled | Obey the posted work-zone limit whenever standard speed-limit signs mark the reduced speed |
| Maryland MD | Doubled | The posted work-zone limit is camera-enforced whenever the signs are up, no worker required, and cameras trigger at 12 mph over |
| Massachusetts MA | Doubled | Obey the posted limit through any marked construction zone |
| Michigan MI | Doubled | Obey the posted reduced work-zone limit |
| Minnesota MN | Doubled | Obey the posted work-zone limit |
| Mississippi MS | Doubled | Hold the posted work-zone limit whenever workers are present and the reduced limit is signed |
| Missouri MO | Doubled | Obey the posted reduced work-zone limit whenever the orange signs stand, workers or not |
| Montana MT | Doubled | The posted work-zone limit applies whenever the zone is signed |
| Nebraska NE | Doubled | Maximum work-zone speed is 35 mph rural, 25 mph urban, or lower if posted |
| Nevada NV | Doubled | Watch the 'DOUBLE PENALTIES IN WORK ZONES' signs |
| New Hampshire NH | Doubled | Slow to the posted work-zone limit, set at least 10 mph below the usual limit where crews are at work on or near the roadway |
| New Jersey NJ | Doubled | Obey the posted limit through the whole construction or repair zone |
| New Mexico NM | Doubled | The DOT sets and posts the work-zone limit |
| New York NY | Doubled | Obey the posted work-zone limit the whole time the orange signs stand, workers or not |
| North Carolina NC | Doubled | Obey the posted work-zone limit the whole time the orange signs stand, workers or not |
| North Dakota ND | Doubled | Obey the posted orange construction-zone limit the whole time the signs stand, workers or not |
| Ohio OH | Doubled | Obey the posted reduced construction-zone limit |
| Oklahoma OK | Doubled | Hold the posted work-zone limit while the signs are up |
| Oregon OR | Doubled | The posted orange limit is the law from the first warning sign, and Oregon counts the zone whether or not workers are on site |
| Pennsylvania PA | Doubled | The posted reduced limit stands whenever the signs are up |
| Rhode Island RI | Doubled | Obey the temporary work-zone limit as long as the signs stand |
| South Carolina SC | Standard | Obey the posted reduced limit through the marked zone |
| South Dakota SD | Doubled | Slow to the posted work-area limit while the signs are up |
| Tennessee TN | Doubled | Hold the posted reduced limit through the whole marked zone |
| Texas TX | Doubled | Obey the posted orange work-zone limit the whole time the signs stand |
| Utah UT | Doubled | The posted work-zone limit applies whenever the signs are up |
| Vermont VT | Doubled | Obey the posted work-zone limit while the signs stand |
| Virginia VA | Doubled | The special work-zone limit bites only when workers are present |
| Washington WA | Doubled | Slow to the posted orange limit the moment you pass the sign and hold it to 'End Road Work |
| West Virginia WV | Doubled | The posted construction-zone limit is a criminal limit when the 'Construction Work' signs are up |
| Wisconsin WI | Doubled | Obey the posted reduced work-zone limit |
| Wyoming WY | Doubled | The posted construction-zone limit applies whenever the zone is signed, workers or not |
Sources: state DOT work-zone safety programs; IIHS; AAA Digest of Motor Laws; FHWA/MUTCD. Last reviewed July 2026. Work-zone speed and penalty rules change; confirm the current statute and obey the posted signs.
Work Zone FAQ
Do fines really double in a work zone?
In most states, yes. A speeding or moving violation inside a marked work zone carries a heavier penalty, and doubling the fine is the common form. The catch is when it applies. Some states double the fine only when workers are actually present, others double it any time the zone is signed and active. Read the signs. "Fines double when workers present" means something different from a zone that is always enhanced.
What is the work zone speed limit?
It is whatever the orange signs post, and it is usually well below the normal limit. The reduced limit stays in force through the whole marked zone, not just the stretch where you see workers. Slow to the posted work-zone speed as soon as you pass the sign and hold it until the "End Road Work" sign. Speed cameras run in work zones in a growing number of states.
Do I have to obey a flagger?
Yes. A flagger directing traffic in a work zone has the authority of a traffic control signal. When the paddle turns to STOP you stop, when it turns to SLOW you crawl through. Disobeying a flagger is a citable offense on its own, and in a work zone it stacks with the enhanced penalties. Treat the flagger as the law inside that zone, because that is exactly what they are.
Can I use my phone in a work zone?
Assume no. Many states either ban handheld phone use for all drivers, which covers work zones, or single out work zones for a stricter rule. A CDL driver is already under the federal handheld ban on any commercial run. In a work zone the ticket costs more and the risk is higher. Put the phone down from the first orange sign to the last.
03
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