Delaware Driving Laws 2026: Speed Limits, DUI BAC Limits and Road Rules for the Permit Test

What are the default speed limits in Delaware when no sign is posted? Delaware law sets 25 mph in business and residential districts, 50 mph on 2-lane roadways, and 55 mph on 4-lane and divided roadways unless a different limit is posted. The permit test has 32 questions, and at least 26 must be answered correctly to pass. DUI limit: 0.08% for adults, 0.02% for under-21. Delaware requires headlights during rain and when visibility drops below 1000 feet. Texting while driving is prohibited for all drivers.

1. Speed Limits in Delaware

Delaware sets specific statutory speed limits for each zone and road classification. DelDOT may establish different limits where justified, which become effective when posted. Heres the full table of statutory limits that apply unless a different limit is posted:

Key test point: Delawares statutory limits may be changed by DelDOT based on engineering, traffic, weather, vehicle type, or other significant factors, and the different limit is effective when posted. Advisory speed signs (black on yellow) warn of conditions rather than setting the statutory maximum. Work-zone moving-violation fines are at least double the normal first-offense amount.

2. Right-of-Way: Who Goes First

Delawares right-of-way repeatedly, pedestrian crossings, 4-way stops, and entering from private roads all carry specific rules. The principle never changes: 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

Yield to pedestrians in the crosswalk as required by Delaware law

T-intersection (no signs)

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

Yield sign

Approaching traffic and pedestrians legally crossing

Merging onto a highway

Traffic already on the highway

3. Turns & 300-Foot Signal Rule

Delaware requires a turn or lane-movement signal continuously for not less than the last 300 feet and not more than 1/2 mile before the movement. Right turns on red are permitted after a full stop unless a sign prohibits it. Heres how every turn and intersection scenario plays out under Delaware law:

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

Only allowed from a one-way street onto another one-way street, after a full stop.

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

A U-turn must be made safely without interfering with traffic. It is illegal on a curve or near the crest of a grade when the vehicle cannot be seen by approaching drivers from either direction within 500 feet.

4. Lane Rules & Line Markings

Delawares road network spans everything from multi-lane I-95 through Wilmington to narrow two-lane rural roads in Kent and Sussex Counties. Lane discipline rules, what lines mean, when you can change, and how the center turn lane works, are directly tested on the Delaware DMV exam.

Center turn lane (CTSL)

Used in preparation for a left turn or where traffic-control devices allocate the lane to traffic moving in your direction; not for ordinary through travel.

Solid white line

Do not cross; marks the edge of the road or a lane that should not be changed.

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.

Delaware left-lane rule: On qualifying express-highway or controlled-access portions of State Route 1 and I-495, a vehicle generally may not remain in the left lane when another vehicle is traveling in that lane less than 100 feet behind, subject to statutory exceptions for passing, entering or leaving, obstructions, emergencies, congestion, and other lawful needs.

5. Passing Another Vehicle

On Delawares two-lane roads through farmland and state forests, passing is a regular maneuver, but the rules are firm. Heres when it is illegal and what the law requires:

• 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.
• When passing a bicycle within a lane wide enough for safe side-by-side travel, reduce speed and leave a reasonable and prudent distance of at least 3 feet. On a multi-lane road, move completely into the lane to the left before passing when that lane is available.
• Return to an authorized lane as soon as practicable; the left side must be clear of oncoming traffic for enough distance to complete the pass without interfering with approaching traffic.
• On a 2-lane highway where passing is unsafe, a slow-moving vehicle with 5 or more vehicles formed in line behind it must turn off wherever a sufficient safe turnout exists to let the following vehicles proceed.
• Never pass a stopped school bus with flashing red lights, this applies in both directions on undivided roads.
• Passing on the right is permitted when it can be done safely, including when the vehicle ahead is turning left, on roadways marked for more than one lane in the same direction, and on sufficiently wide one-way roadways. A vehicle passing a left-turning vehicle may use the shoulder if necessary.

6. Following Distance

Delawares DMV handbook is direct on this: at 30 mph it takes about 200 feet to stop, almost half a football field. The 3-second rule is your minimum under normal conditions. In rain, on wet pavement, or in heavy traffic, add more time.

Delaware statutory following rule: A driver may not follow more closely than is reasonable and prudent. Outside a business or residence district, a truck or vehicle drawing another vehicle must, when conditions permit, leave at least 300 feet behind the vehicle ahead so an overtaking vehicle can safely enter the space.

7. School Buses & Emergency Vehicles

Delawares school bus stop rules and the Move Over law are both directly tested on the knowledge exam. Passing a stopped school bus in Delaware carries 6 points, among the highest single-offense totals in the point system.

School Buses

• When a school bus is stopped and displays flashing red lamps, drivers approaching the bus from the front or rear must stop before passing and remain stopped as required by Delaware law.
• On a roadway or roadways with 4 or more lanes, a driver approaching the stopped school bus from the front does not stop.
• The 4-or-more-lane exception applies to traffic approaching from the front; traffic approaching from the rear of the bus must still stop.
• You must remain stopped until the bus begins to move or the red stop lamps are no longer activated.
• Delaware penalty for illegally passing a stopped school bus: 6 points on your record, the same as reckless driving, plus possible additional suspension action.
• Railroad crossings: A school bus generally must stop within 50 feet but not less than 15 feet from the nearest rail and look and listen before crossing, subject to the specific statutory exceptions for crossings controlled by a police officer or human flagger or marked so the stopping requirement does not apply.

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 (Delaware): When approaching a stationary vehicle giving a warning signal, including an emergency, DelDOT, tow, utility, or other vehicle displaying hazard lights or other warning signals, move into a nonadjacent lane when safely possible on a roadway with at least four lanes and at least two lanes in your direction. If changing lanes is impossible or unsafe and the posted limit is 50 mph or higher, slow to a safe speed at least 20 mph below the posted limit while passing.

8. Alcohol, DUI & BAC Laws

Delawares DUI law operates in tiers, the higher your BAC, the longer your revocation. At 0.15% you lose your license for 18 months on a first offense; at 0.20% it is 24 months. Refusing a chemical test? Thats an automatic 12-month revocation before any court conviction. And every DUI conviction from another state triggers a Delaware revocation.

9. Seat Belts & Child Seats

Delaware is a primary enforcement state, an officer can pull you over for an unbelted occupant without any other reason. The driver is responsible for properly restraining passengers age 16 or older and for children under 16 under Delaware child-restraint law. Over 90% of Delawareans buckle up; here is the full law:

10. Where You Cannot Park

Delaware includes a specific fire station rule, 20 feet from the driveway entrance, and on the opposite side of the street within 75 feet when signs are posted. Know all these distances for the DMV test. You cannot park:

• Within 15 feet of a fire hydrant
• Within 20 feet of a crosswalk at an intersection
• Within 30 feet upon the approach to a flashing beacon, stop sign, or traffic signal
• Within 50 feet of a railroad crossing
• Within 20 feet of a fire station driveway
• 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

Delaware sits between the Atlantic coast and the Chesapeake Bay, making it prone to dense fog, Noreaster ice storms, and sudden coastal squalls. The Delaware Bay crossings and low-lying areas near Rehoboth and Dewey Beach flood quickly. Heres how the DMV handbook says to handle it:

• Headlights required in Delaware when windshield wipers are in use because of weather conditions. They are also required during fog, smoke, rain, and when persons and vehicles are not clearly discernible at 1,000 feet ahead.
• 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

Delawares Problem Driver Program uses a two-year rolling point calculation, and the thresholds are graduated, from an advisory letter at 8 calculated points through mandatory suspensions beginning at 14 points, with a 12-month suspension at 22 points. Heres exactly how Delawares point system works:

Note: * May result in additional actions including suspension. Note: a speeding violation of 1–14 mph over the posted limit may avoid points if it is the first violation within a 3-year period and it is paid through an eligible voluntary-assessment process; this point exception applies to Class D license holders, not CDL holders.

13. Headlight Rules

Delaware has a specific headlight rule that surprises many drivers: headlights are required when windshield wipers are in use because of weather conditions, not just at night. The dimming distances are also tested: 500 feet oncoming, 200 feet following.

Key test point: Delawares rule is 500 feet for oncoming and 200 feet for following. Also: headlights are required when windshield wipers are in use because of weather conditions, a Delaware-specific rule.

14. Night Driving

Delawares coastal geography creates persistent fog conditions along Route 1, the beach communities, and the Delaware Bay. At night, your headlights reveal about 350 feet ahead, but stopping from 55 mph takes the same distance. Thats overdriving your headlights.

15. Cell Phones & Distracted Driving

Delawares DMV handbook identifies distracted driving as a top crash cause, noting that at 55 mph, just 34 seconds of distraction means your vehicle travels the length of an entire football field. Handheld device use is banned for all drivers.

Key test point: Delawares DMV handbook lists over a dozen specific distracted driving behaviors, from eating and grooming to taking selfies and responding to email. At 55 mph, 34 seconds of distraction = one football field of blind travel. The handheld ban applies to all drivers at all times while in motion.

16. Railroad Crossings

Delawares rail lines cross public roads throughout New Castle County and along the corridor between Wilmington and Newark. The Delaware DMV test covers stop distances and which vehicles must always stop at crossings regardless of signals.

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

Roundabouts appear throughout Delaware, particularly on Route 1 in Sussex County and near Middletown and Bear in New Castle County. The Delaware DMV tests them directly. The one rule everyone gets wrong: you yield when entering, every single time, to vehicles already in the circle.

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.