Texas Driving Laws 2026: Speed Limits, DWI BAC and Texas DPS Road Rules for the Permit Test

What is the default speed limit in Texas on a US-numbered highway outside an urban area? Texas sets 70 mph on most TX and US-numbered roads outside cities and up to 85 mph on some limited access highways. Texas uses both DWI for adults at 0.08% and DUI for minors at any detectable amount, two separate terms, two different thresholds. Texas DWI fines can reach 10000 dollars. All passengers in Texas must wear seat belts regardless of age. Texting while driving is banned for all drivers; drivers under 18 face a complete handheld ban including hands-free.

1. Texas Speed Limits: 30 Urban, 70 on TX/US Highways, Up to 85 MPH on Some Toll Roads

What is the speed limit in a residential area in Texas, and what happens if no sign is posted? Speed limits are set by state law; when no sign is visible, these default limits apply:

Key test point: Texas uses both DWI (adults, 0.08%+) and DUI (minors, any detectable amount), two terms, two thresholds. The written test expects you to know the difference. Urban district default is 30 mph; numbered highways outside urban areas default to 70 mph. And Texas fines can reach $10,000 for a DWI conviction.

2. Texas Right-of-Way: 4-Way Stops, Yielding at Highway Entrances & Pedestrian Priority

Who has the right-of-way at a 4-way stop in Texas, and do pedestrians always go first? Right-of-way questions are among the most frequently tested; remember: right-of-way is something you give, never something you take.

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. Texas Turn Signal Law: 100 Feet Continuously Before Every Turn or Stop

Can you turn right on red in Texas, and how far in advance must you signal a turn? Intersection and turn rules are heavily tested, including when left turns on red are legal and exactly how far in advance you must signal.

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 business districts in Texas unless at a designated intersection.

4. Texas Lane Rules: Keep Right Unless Passing, Center Turn Lanes & Highway Lane Discipline

When can you use the center turn lane in Texas, and what do solid versus broken yellow lines mean for passing? Lane rules determine where you drive and when you can cross a line, all commonly tested on the knowledge 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 in Texas: Signal Before and After, Never Pass at Crossings or Within 100 Feet

When is it illegal to pass another vehicle in Texas, and how close to an intersection can you pass? Passing is one of the most dangerous maneuvers on the road, Texas law sets strict distance and visibility rules:

• 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. Texas Following Distance: 3-Second Rule & Never Within 500 Feet of an Emergency Vehicle

What is the safe following distance in Texas, and how does weather change it? Texas uses the 3-second rule as the minimum under normal conditions: pick a fixed object ahead, and when the car in front passes it, you should reach it no sooner than 3 seconds later.

7. Texas School Bus Law: Stop Distance, Move Over 20 MPH Under Limit & School Zone Rules

Do you have to stop for a school bus on a divided highway in Texas, and what is the fine for passing one illegally? These are two of the most frequently tested topics on the Texas permit exam.

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.
• Penalty for illegally passing a school bus in Texas: fine up to $1,000 and possible 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 (Texas): When passing a stopped emergency vehicle, tow truck, or highway maintenance vehicle on a multi-lane road, you must move one lane away if possible. If you cannot move over, slow to a safe speed below the posted limit.

8. Texas DWI/DUI: $10,000 Max Fine, Zero Tolerance for Minors & ALR Suspensions

What is the legal BAC limit in Texas for drivers under 21, and can you refuse a breathalyzer? Texas DWI laws cover every driver category with different limits and strict implied consent penalties.

9. Texas Seat Belt Law: All Passengers All Ages, Under-8 AND Under 49" in Child Car Seat

Who gets the ticket if a passenger is not wearing a seat belt in Texas, the driver or the passenger? Texas is a primary enforcement state, meaning officers can stop you solely for a seat belt violation.

10. Texas Parking Rules: 15-Foot Hydrant, 500-Foot Fire Truck Clearance & No-Park Zones

How far from a fire hydrant must you park in Texas, and is it legal to park on a bridge? These distance rules are frequently tested and easy to miss if you have not studied the specific numbers. Know where 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
• 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 Texas Weather: Flash Floods, Dust Storms on I-10 & Coastal Hurricane Prep

Are headlights required when it is raining in Texas, and what should you do if your car starts to hydroplane? Texas weather can change fast, especially in the Ozarks and River Valley; these rules tell you exactly how to adjust.

• Headlights required in Texas from 30 min after sunset to 30 min before sunrise and when individuals or vehicles cannot be seen clearly at 1,000 feet. Low beams required in fog, heavy rain, sleet, snow, or dust.
• 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. Texas Driver Record: DWI Surcharges, Driver Responsibility Program & Points

How many points does a speeding ticket add to your Texas license, and at what point do you lose it? Texas uses a point system where violations accumulate over 3 years; too many points leads to suspension.

Note: Completing a state-approved defensive driving course can reduce your point total by 3 points (once every 3 years).

13. Texas Headlight Law: 1,000-Foot Visibility Trigger, 30-Min Rule & 500/300-Foot Dimming

When must you dim your high beams in Texas, and how far away does an oncoming car need to be? Texas law specifies exact distances for dimming, and the 500/300-foot rule is one of the most tested questions on the exam.

Key test point: The 500-foot / 300-foot rule is a classic exam question. Oncoming = 500 feet. Following = 300 feet. Dim accordingly.

14. Night Driving in Texas: 85-MPH at Night, Stop Within Headlight Range & Wildlife

What does "overdriving your headlights" mean in Texas, and why is it dangerous? Driving at night significantly increases crash risk; these rules cover visibility, speed, and wildlife hazards specific to Texas roads.

15. Texas Cell Phone Law: Texting Banned All Drivers, Under-18 Complete Ban Including Hands-Free

Is it legal to use your phone while driving in Texas, and can a cop pull you over just for texting? Texas has specific primary-enforcement laws targeting handheld device use, with stricter rules for permit and intermediate license holders.

Key test point: Texting while driving is a primary offense in Texas, police do not need another reason to pull you over. This distinction frequently appears on the knowledge exam.

16. Texas Railroad Crossings: Stop 1550 Feet From Rail & Hazmat Required Stops

How far from the tracks must you stop at a railroad crossing in Texas, and what vehicles must always stop even when no train is coming? Railroad crossing rules are tested on the Texas knowledge exam; know exactly when to stop and how far back.

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. Texas Roundabouts: Yield on Entry, Lane Selection & How to Signal Your Exit

Texas has been building roundabouts across the state, particularly in Austin, San Antonio, Houston suburbs, and along TxDOT highway upgrades in rural areas. The DPS written test covers them. Entering traffic always yields to vehicles already circulating inside.

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.