Maine Driving Laws 2026: Speed Limits, OUI BAC Limits and Maine BMV Road Rules for the Permit Test

What are the default speed limits in Maine when no sign is posted? Maine sets 25 mph in urban areas and 45 mph on rural highways. Maine calls drunk driving OUI, Operating Under the Influence. The OUI threshold is 0.08% for adults; drivers under 21 are subject to zero tolerance above 0.00. Headlights are required from sunset to sunrise and when persons or vehicles are not discernible for 1,000 feet. Maine also requires headlights when windshield wipers are in constant use. Handheld device use is prohibited while driving; hands-free use is permitted only for drivers age 18 or older who are not operating with a learner's permit or intermediate license.

1. Speed Limits: 45/25/15 mph Defaults

Maines unposted speed limits are simpler than most states, just three tiers. Speeding in a school zone automatically doubles the fine. Heres exactly what applies when no sign is visible:

Key test point: Maines default is 25 mph in built-up areas, lower than many other states 30-35 mph defaults. The 15 mph school-zone rule applies during recess and during school opening and closing periods defined by law as the half-hour before and after the beginning of the school day and the half-hour before and after the end of the school day, as well as other designated times. When in doubt, slow down, and speeding in a school zone in Maine automatically doubles the fine.

2. Right-of-Way: Who Goes First

Maines right-of-way scenarios consistently, especially yielding to school crossing guards, which Maine law treats as a legal directive. When a school crossing guard directs you to stop, you must stop. Right-of-way is always yielded, never demanded.knowledge test hits

4-way stop (all arrive at once)

Driver to the right

4-way stop (one arrives first)

Driver who arrived first

Roundabout / traffic circle

Vehicles already inside the circle

Emergency vehicles (lights/siren)

Emergency vehicle, pull to the right and stop

Pedestrians in crosswalk

Pedestrians always

T-intersection (no signs)

Through road traffic; drivers on the dead-end must yield

Yield sign

Cross traffic and pedestrians always

Merging onto a highway

Traffic already on the highway

3. Turns & Signal Laws

Maine requires signaling at least 100 feet before any change or turn. Cars coming out of a driveway or alley must stop before crossing the sidewalk, a Maine rule that trips many test-takers. Right turns on red are permitted after a full stop unless posted otherwise:

Right turn on red

Permitted after a full stop unless a sign prohibits it. Yield to pedestrians and cross traffic.

No right turn on red

When posted, you must wait for a green light before turning right.

Left turn on red

Not permitted on a steady red signal in Maine; wait for a signal that permits the turn.

Left turn from two-way street

Start from the left lane; end in the left lane of the cross street.

Right turn

Stay as close to the right curb as possible; end in the right lane.

U-turns

Legal where not prohibited by a sign; must not interfere with traffic. Illegal in Maine where signs prohibit it, where visibility is insufficient, or where it cannot be safely completed. Maine traffic law discourages U-turns in high-traffic areas.

4. Lane Rules & Line Markings

On Maines two-lane state highways through the mountains and along the coast, knowing when yellow lines permit or prohibit passing is a genuine safety matter, not just a test question. Heres the full breakdown tested on the Maine BMV exam:

Center turn lane (CTSL)

When a two-way center lane is marked for turning only, use it for left turns. Maine law also allows the two-way lane as part of a two-part left turn from a driveway or entrance until the travel lane can be entered safely.

Solid white line

Crossing is discouraged; a solid white line separates same-direction lanes where lane changes should be avoided or marks the right edge of the roadway.

Solid yellow line (your side)

No passing allowed.

Broken yellow line

Passing allowed when safe.

Solid + Broken yellow centerline

Passing allowed only on the broken-line side.

Maine left-lane law: On a limited-access way with a speed limit of 65 mph or more, ordinary driving is restricted to the right-hand lane. Adjacent lanes may be used to overtake and pass, but you must return to the right-hand lane at the earliest opportunity unless an authorized exception or traffic direction applies.

5. Passing: The 10-Second Gap Rule

Maines handbook is specific: at highway speeds of 50-55 mph, you need 10 to 12 seconds to complete a pass safely, which means a very large gap in oncoming traffic. On Maines mountain roads and coastal two-lanes, that gap rarely exists:

• Only pass on the left, using the oncoming lane, when it is safe and legal.
• Do not pass within 100 feet of an intersection, railroad crossing, bridge, or curve where your view is limited. Look for the No Passing Zone pennant sign.
• The vehicle being passed must not speed up while you are overtaking.
• Return to your lane before coming within 100 feet of an approaching vehicle. At 50-55 mph, the handbook says a safe pass typically requires 10-12 seconds of clear road.
• Never pass a stopped school bus with flashing red lights, this applies in both directions on undivided roads.
• When passing a bicycle or roller skier traveling in the same direction, leave at least 3 feet. Maine permits crossing a no-passing-zone line to pass a bicycle or roller skier only when it is safe.
• You may pass on the right when the vehicle ahead is making or about to make a left turn, on a sufficiently wide unobstructed multi-lane way, or on a sufficiently wide one-way road, but only when safe and without driving off the pavement or main traveled portion.

6. Following Distance

Maines handbook flags October and November as peak deer collision months, and moose are present year-round on rural highways in northern Maine. The Maine BMV handbook uses the 2-second rule as the basic following check and recommends a 3- to 4-second following distance in situations requiring an extra cushion.

7. School Buses & Emergency Vehicles

Maine tests school bus stop rules and school crossing guard authority on the knowledge exam. Maine law requires stopping when a crossing guard in uniform directs you, it is a legal obligation, not a courtesy. School bus stop rules apply on all undivided roads.

School Buses

• When a school bus stops with flashing red lights and an extended stop arm, all traffic in both directions must stop on undivided roads.
• On roads with a true median or physical barrier, only traffic behind the bus must stop, oncoming traffic may proceed.
• A center turn lane does not count as a divider. On 4+ lane roads without a raised median or barrier, all directions must stop.
• You must remain stopped until the school bus resumes motion or the school bus operator signals you to proceed.
• Illegally passing a stopped Maine school bus is a Class E crime punishable by a minimum $250 fine for a first offense; a second offense within 3 years carries a mandatory 30-day driver's license suspension.
• Railroad crossings: School buses must stop at ALL railroad crossings, with or without passengers, even if no lights are flashing and no train is visible. This is a frequently tested rule.

Emergency Vehicles

• When you see or hear an emergency vehicle (police, fire, ambulance) with lights or siren: pull to the right edge of the road and stop. Do not block intersections.
• Move Over Law (Maine): When passing a stationary authorized emergency vehicle using an emergency light or a stationary public service vehicle using its authorized lights, move to a nonadjacent lane if possible. If that is impossible or unsafe, pass at a careful and prudent speed reasonable for the conditions.

8. OUI Laws: Up to 6-Year Refusal Ban

Maine uses OUI, Operating Under the Influence, not DUI. Maines handbook puts it plainly: you will be promptly arrested and taken off to jail. The implied consent refusal suspension is among the most severe in the country, up to six years. And refusing a test does not help: it becomes an aggravating factor that adds more time to your suspension if convicted.

9. Seat Belts: Weight-Based Child Rules

Maine combines age, weight, height, and child-restraint manufacturer limits. Children under 2 generally must be rear-facing; children age 2 or older and under 55 pounds generally require an internal-harness restraint; children under 80 pounds, under 57 inches, and under age 8 require a belt-positioning seat or other child restraint. Children under 12 must ride in the rear seat if possible.

10. Where You Cannot Park

Maine law sets general parking requirements, while the BMV handbook also notes that some municipal ordinances impose specific parking distances. For example, those local rules may prohibit parking within 10 feet of a fire hydrant.

• Where a municipal ordinance applies, within 10 feet of a fire hydrant
• Where a municipal ordinance applies, within 15 feet of a fire-station driveway entrance or directly across from the entrance
• Where a municipal ordinance applies, within 15 feet of a crosswalk
• On a public way outside a business or residence district when it is practicable to park off the traveled portion; when parking on a public way, leave at least 10 feet of unobstructed width for passage and ensure an approaching vehicle has a clear view of the way for 300 feet beyond the parked vehicle before coming within 200 feet of it
• On a sidewalk, in front of a driveway, or on a bridge
• In a no-parking zone or alongside a curb painted yellow or red
• Double parking (alongside a vehicle already parked at the curb)
• Headed downhill: turn wheels toward the curb. Headed uphill with a curb: turn wheels away from curb. Uphill without a curb: turn wheels toward the shoulder.

11. Driving in Bad Weather

Maine winters are serious, black ice on the Maine Turnpike, coastal fog that reduces visibility to car lengths on US-1, and spring mud seasons that make rural roads unpredictable. The BMV manual covers every hazardous condition relevant to Maine roads:

• Headlights required in Maine from sunset to sunrise; also on rainy, snowy, or foggy days and whenever you have trouble seeing other vehicles or they may have trouble seeing you.
• In heavy fog, use low beams, high beams reflect off fog and reduce visibility.
• If you start to hydroplane, ease off the gas gently. Do not brake hard or turn sharply.
• In icy conditions, brake gently well in advance. Start slowing earlier than normal. Leave extra following distance.
• If your car goes into a skid, steer in the direction you want the front of the car to go. Do not overcorrect.
• Never use cruise control on wet, icy, or slippery roads.

12. Points & License Suspensions

Maines point system issues a warning at 6 points and suspends at 12 points or more. Maine allows drivers to earn up to 4 violation-free credit points, one for each calendar year free of convictions or suspensions. Points are erased from a drivers record when they become one year old. Heres how it works:

Note: Maine allows earning up to 4 credit points for a violation-free driving period, these credits reduce your total point accumulation. Maine also has administrative license suspension rules separate from the court-based OUI conviction system, both can act on your license simultaneously.

13. Headlights: Turn Off Fog Lights on Low Beam

Maines headlight law specifies exact dimming distances, 500 feet for oncoming vehicles and 300 feet when following, and adds a specific rule about fog auxiliary lights: you must turn them off when switching to low beams unless the fog lights were installed by the vehicle manufacturer at the time the vehicle was originally manufactured. On Maines dark rural roads, high beams can see twice as far as low beams:

Key test point: Maines rule: oncoming = dim at 500 feet, following = dim at 300 feet. Both numbers appear on the knowledge test. The additional Maine-specific rule: you must also turn off fog auxiliary lights when switching to low beams. And remember, headlights illuminate about 250 feet ahead; drive at a speed that allows stopping within that distance.

14. Night Driving: Moose Season

Maine has one of the highest moose-vehicle collision rates in the country. A moose is tall enough that a headlight strike hits the body, not the legs, bringing hundreds of pounds through your windshield. On I-95 north of Bangor, US-1 through Washington County, and Route 201 through the Kennebec Valley, moose crossings at night are a genuine fatality risk.

15. Cell Phones & Distracted Driving

Maines handbook opens its distracted driving section with a pointed observation: while instant communications can make businesses more efficient, the priority behind the wheel is driving. Maine prohibits handheld device use while driving for all drivers.

Key test point: Maine prohibits handheld device use for all drivers, including while temporarily stationary because of traffic, a traffic light, or a stop sign. Hands-free use is restricted to eligible drivers age 18 or older who are not using a learners permit or intermediate license.

16. Railroad Crossings: Exempt Track Warning

Maines handbook covers two railroad crossing rules specific to the states exam: first, do not shift a manual transmission while crossing tracks, staying in gear gives better control on the uneven surface. Second, tracks marked "Exempt" may still be in use, check both directions regardless of the sign.

Key test point: Never drive around or under a lowered crossing gate, it is illegal and extremely dangerous. Wait until gates are fully raised and all tracks are clear.

17. How to Drive a Roundabout

Maine DOT has been installing roundabouts at intersections across the state, particularly in the Greater Portland area, on US-1 corridor improvements, and at rural highway junctions. The BMV tests them. The rule that most test-takers miss: entering traffic must yield to vehicles already circulating inside, every time.

Key test point: The most common wrong answer on roundabout questions is thinking you have right-of-way when entering. You never do, yield to traffic already inside.