Driving in Washington 2026 — Strictest Phone Law & Mountain Chain Rules

Driving in Washington

Washington (WA), capital Olympia, is a Pacific Northwest state where rainy Pacific coast and dry eastern plateau defines what you need to know before getting behind the wheel. Handheld phone use behind the wheel is banned.

Speed Limits in Washington

Rural interstates posted at 70 mph. Urban interstates around Seattle posted at 60 mph.

Speeding fines in Washington escalate quickly. School zones and construction zones carry extra penalties, and some areas use automated speed enforcement.

Traffic Laws in Washington

Cell Phone Law: Hands-free required for all drivers. Handheld use of any electronic device is prohibited while driving, even while stopped in traffic. Fines for violations in Washington can be substantial, and points may be added to your licence.

Seatbelt Law: Primary enforcement for all occupants. Buckle up every trip in Washington — no exceptions.

Right Turn on Red: Permitted in Washington after a complete stop, unless a sign says otherwise. Yield to pedestrians and cross traffic.

Move-Over Law: Washington requires drivers to change lanes or reduce speed when passing stopped emergency vehicles, tow trucks, or maintenance vehicles.

Headlights: Required from 30 minutes after sunset to 30 minutes before sunrise, during inclement weather, and when windshield wipers are in use.

Child Restraints: Children under 2 must be in a rear-facing child seat. Children under 4 must be in a child restraint with harness. Children 4-8 (under 4 feet 9 inches) must be in a booster seat. Children 8-15 must use a seatbelt. Children under 13 must ride in the back seat when practical.

DUI Laws in Washington

The legal BAC limit in Washington is 0.08% for drivers 21 and over. For drivers under 21, the limit is 0.02%. Commercial vehicle drivers face a nationwide 0.04% limit.

Penalties in Washington for a first DUI include fines, possible jail time, licence suspension, and alcohol education. Washington participates in the Interstate Driver’s License Compact, so a conviction here follows you to your home state.

Tyre Requirements in Washington

There is no winter tyre mandate in Washington, though having season-appropriate tyres is strongly recommended. Chains or approved traction devices may be required on mountain passes including Snoqualmie Pass, Stevens Pass, and White Pass during winter conditions. WSDOT posts chain requirements.

Studded Tyres: Allowed November 1 through March 31.

Tread Depth: Washington enforces the federal minimum of 0.0625 inches (2/32"). At this depth, wet braking performance is severely compromised. Replace tyres at 4/32" — do not wait for the legal limit.

Given Washington’s rainy Pacific coast and dry eastern plateau, consider switching to winter tyres if you regularly drive in cold or snowy conditions. Summer tyre compounds harden below 45°F (7°C) and lose grip.

Insurance and Equipment in Washington

Liability insurance is mandatory in Washington. Carry proof of insurance at all times — driving without it in Washington can result in fines, licence suspension, and vehicle impoundment.

Your vehicle in Washington must have working headlights, brake lights, indicators, mirrors, horn, and wipers. Registration and plates must be current. Window tint regulations vary — verify WA limits before tinting.

Licence Requirements for Visitors to Washington

Visitors from other US states can drive in Washington with their valid home state licence. International visitors should carry both their home licence and an International Driving Permit (IDP) obtained before travelling. The IDP is a translation, not a replacement — carry both documents.

New residents of Washington must get a state licence after establishing residency. Requirements usually include a vision screening, a written test on Washington’s traffic laws, and possibly a behind-the-wheel exam.

Toll Roads in Washington

Washington has toll roads and/or bridges. Most toll facilities now use electronic tolling. If you are renting a car, ask the rental company about toll transponder options — third-party transponder fees from rental agencies can be expensive.

Seasonal Driving in Washington

Driving conditions in Washington are shaped by rainy Pacific coast and dry eastern plateau.

Seasonal preparation for Washington:

• Winter: carry an ice scraper, snow brush, jumper cables, and a bag of sand or cat litter for traction. Keep an emergency blanket and extra warm layers in the vehicle
• Summer: check tyre pressure and coolant levels before long drives
• Year-round: keep an emergency kit with water, torch, phone charger, first aid, and snacks
• Check Washington’s DOT website for real-time road conditions and travel advisories

Renting a Car in Washington

The minimum rental age in Washington is typically 21, though drivers under 25 pay a surcharge. Some agencies rent to 18-20 year olds with an additional fee. International visitors should confirm that their licence and IDP are accepted by the agency.

Inspect the rental car thoroughly before driving away. Document scratches and dents with photos. Familiarise yourself with the controls — headlights, wipers, hazard lights — before you leave the lot. Confirm the fuel type (most US rental cars use regular unleaded gasoline).

Your existing insurance or credit card may cover rental vehicles in Washington — verify before declining the agency’s coverage. International visitors should strongly consider full coverage.

Emergency Contacts in Washington

Dial 911 for any emergency in Washington — police, fire, or medical. For non-emergency roadside assistance, contact the Washington State Patrol at (360) 596-4000.

If you are in an accident in Washington: stop immediately, check for injuries, call 911 if anyone is hurt, move vehicles to the shoulder if safe, exchange insurance and contact details, and photograph the scene. Do not admit fault.

For breakdowns in Washington: move to the shoulder, turn on hazards, and call roadside assistance or 911. On high-speed roads, staying inside the vehicle is safer than standing outside it.

Driving Tips for Washington

Practical advice for driving in Washington:

• Obey posted signs. Speed limits, stop signs, and no-passing zones are enforced across Washington. Some areas use automated enforcement.
• Watch for pedestrians and cyclists. Yield at crosswalks and leave at least three feet when passing cyclists in Washington.
• Signal your intentions. Use turn signals well before turning or changing lanes in Washington.
• Stay alert. Long drives across Washington can be tiring. Stop every two hours or 100 miles to rest.
• Wildlife hazard: deer and elk in the Cascades and Olympic Peninsula.
• School zones. Slow down in Washington school zones during school hours. Passing a stopped school bus with flashing lights is a serious offence in every US state.