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 state highways, and 65 mph on limited access divided highways. The permit test requires 80% on 30 questions. 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. Route 1 and I-495 get their own higher tier. Heres the full table of limits, the driver must never exceed the posted limit, and these apply when no other sign is posted:

Key test point: Delawares speed limits are firm maximums, but any limit can be reduced under emergency or weather conditions. Advisory speed signs (black on yellow) are not legal limits but warn you of unsafe conditions. Work zone speed limits are actively enforced and fines are doubled. You must also obey posted minimum speed limits except when weather makes it unsafe.

2. Right-of-Way: Who Goes First

Delawares knowledge test hits 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.

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 & 300-Foot Signal Rule

Delaware requires signaling for at least 300 feet before any turn, and even longer at highway speeds. 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

Legal where not prohibited by a sign; must not interfere with traffic. Illegal in Delaware where a driver cannot see clearly in both directions, in business districts unless at a designated intersection, and wherever signs prohibit it.

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 only to begin or complete a left turn; not for through travel or merging. You may travel no more than 300 feet in the CTSL.

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.

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.
• Return to your lane before coming within 200 feet of oncoming traffic.
• Never pass a stopped school bus with flashing red lights, this applies in both directions on undivided roads.
• You may pass on the right only when the vehicle ahead is turning left and there is a usable lane to the right.

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.

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 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 red lights stop flashing and the stop arm is retracted.
• 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: 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 (Delaware): When approaching a stopped emergency vehicle, law enforcement, tow truck, or highway construction vehicle with flashing lights on a multi-lane road, move one lane away when safely possible. If lane change is not possible, reduce speed to a safe level for conditions.

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 receives the ticket for any unrestrained passenger. 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 of a stop sign, yield 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 any time you use your windshield wipers, for any reason. Also required when you cannot see beyond 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 points all the way to a mandatory 12-month suspension at 22 points. Heres exactly how Delawares point system works:

Note: * May result in additional suspension actions beyond standard point thresholds. Note: a speeding violation of 114 mph over the limit will not be assessed points if it is the first violation within any 3-year period AND paid through the Voluntary Assessment Center. CDL holders do not qualify for this exception.

13. Headlight Rules

Delaware has a specific headlight rule that surprises many drivers: headlights are required any time you use your windshield wipers, 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 any time windshield wipers are in use, that is a frequently tested 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.