Drivers: Health, Vision and Hearing, Impaired Driving by Alcohol, Cannabis, Medications, Polydrug Use and Fatigue, Mental Health, Aggressive Driving, Racing and Road Rage, Informed Decisions and the OODA Loop, the Distracted Driving Law, Paying Attention and Scanning, Litter, the Environment and Self-Evaluation
Written for aiforu2 as the source for a practice-test bank and the on-device tutor for the Washington Driving Knowledge Exam. The facts follow the official guide; the wording is ours.
Source: Washington State Driver Guide (text-only edition, 2025), Washington State Department of Licensing, chapter 3 "Drivers" (sections 3.0–3.6).
Fit to drive
A good driver is mindful of others, responsible for the rules, familiar with the vehicle, and patient. Habits built while learning, like the over-the-shoulder blind-zone check, become automatic and free your attention for the road. Driving takes physical and mental fitness: a cold, a headache or stress all degrade decisions, so check in with yourself before starting the engine and let someone else drive if you are unwell.
Vision. The law requires a vision test before licensing. If you need corrective lenses, always wear them and avoid dark or tinted lenses at night. Peripheral vision and judging distance and speed matter most. At night, keep the headlights on and properly aimed, watch the right edge of the road to escape oncoming glare, and slow down so you can stop inside the area your headlights light.
Hearing. Horns, sirens and screeching tires warn you of danger. It is against the law to drive wearing earbuds, earphones, headphones or headsets that broadcast sound or cancel noise; a hands-free device in one ear is allowed if it complies with WAC 204-10-045. Instruction-permit and intermediate-license holders may not use a phone or mobile device at all, even hands-free.
Impaired driving
Impairment is anything that makes it hard to think straight, respond quickly or control the car: alcohol, drugs or tiredness. Penalties for alcohol or drug impairment include heavy fines, higher insurance, license suspension or withdrawal and jail.
Alcohol is the most common impairing substance in impaired-driving crashes. It brings relaxation and drowsiness, blurred or limited eyesight, slower reactions and scanning, trouble understanding what is happening or doing two things at once (such as holding a lane while avoiding traffic), inability to obey the rules, and overconfidence. Never drive after consuming impairing substances, never ride with someone who has, and plan for a sober driver.
Cannabis is legal recreationally at 21, but driving after consuming any cannabis product (edibles, patches, vapes, tinctures, topicals) is illegal at every age; there is no safe amount for driving. It reduces attention, reaction time, coordination and car handling, hurts distance judgment and increases drowsiness.
Medications. Many legal over-the-counter and prescription drugs impair driving; legal does not mean safe, and impaired driving is a crime whatever the drug's source. Cold, allergy and headache remedies cause drowsiness; prescriptions affect reflexes, judgment, vision and alertness. Do not drive after starting a new prescription or a higher dose until you know its effect. A warning against "operating heavy machinery" includes driving. Some drugs are harmless alone but severely impairing with a second drug or alcohol.
Polydrug use, mixing more than one drug (alcohol, cannabis, illegal drugs, prescriptions, over-the-counter medicines, inhalants), produces effects greater than any one alone and is the most common impairment in fatal crashes.
Fatigue impairs vision and judgment like alcohol. Pull over and rest if you cannot remember the last few miles, blink often or have heavy eyelids, drift, swerve, tailgate or hit rumble strips, cannot keep your head up, miss exits or signs, or feel restless or irritable. Alone and tired, pull off and take a 20-minute nap. Before a trip, sleep 7 to 9 hours, plan a stop about every 100 miles or 2 hours, and share the driving.
Mental health, aggression and road rage
Emotions change behavior: anxiety, for instance, makes the foot heavy on the accelerator. Calm down in a parked car by breathing in through the nose and exhaling as if cooling soup, or counting slowly to 20 or backward from 100 by threes, and allow plenty of time for the trip.
Aggressive driving is a traffic offense: purposely doing something that endangers people or property, or forces another person to protect themselves. Its markers are speeding, following too close, unsafe lane changes, improper signaling, ignoring traffic control devices and driving too close to people walking or cycling. Street racing and unauthorized street demonstrations carry severe penalties for drivers and anyone who instigates or assists, including fines, jail and vehicle impoundment.
Road rage is a criminal offense: an angry response that leads to violence with a vehicle or another weapon. Warning signs in yourself include violent thoughts toward others, disobeying laws you disagree with, tailgating, speeding, weaving, racing a light, cutting between vehicles, excessive horn or high-beam flashing, brake-checking a tailgater, or passing and then slowing to teach a lesson. If you are the victim, distance yourself, breathe, move out of the way, avoid honking or gestures, drive to where there are people and open businesses if followed, and call the police. Report in-progress road rage by calling 911 with the location, plate, direction of travel, road, vehicle colors, any weapons, a summary and your role.
Deciding and problem solving
Every action behind the wheel is a decision; informed decisions raise awareness, promote responsible driving and reduce crashes, and depend on your knowledge of the law, your experience and your capabilities. A teen's judgment centers are still developing, so teens are more prone to risk and miscalculation; older drivers face changing abilities and greater injury risk. Good decisions follow a routine: inform yourself with mirror checks, inform others of your intentions, prepare the vehicle's position and speed, and do a final check before maneuvering. Aim to be aware, predictable and smooth. For unexpected situations use the OODA loop: Observe what changed, Orient with your knowledge to understand what it means, Decide the safest action, and Act smoothly and decisively.
Distracted driving
Distractions are inside the vehicle (phones, eating, radio, passengers), outside it (billboards, crashes, other people), physical (fatigue, discomfort) and mental (daydreaming, worry, strong emotions). Distracted drivers swerve, drive too fast or too slow, miss signals, signs, motorcyclists, bicyclists and pedestrians, and follow too closely. The strategies: plan ahead, put the phone away, be observant. Under Washington's law you may not hold any electronic device while driving (phone, tablet, gaming device), whatever your age or experience; hands-free use is permitted but still dangerous. Officers ticket violations with heavy fines, and the fine can be doubled after the first violation.
Smart drivers
Smart drivers are aware inside and outside the vehicle, in control of gas, brake, steering and position, predictable through signals and smooth movement, thoughtful and intentional. Attention comes in four kinds: switching, divided, focused and sustained. Help yourself by removing distractions, resting, silencing electronics, limiting passengers and pets, and refusing to multitask. Visual searching uses the eyes; scanning moves head, neck and body to see as much as possible. Scan ahead for situations to steer around, blockages hiding people, feet, wheels, shadows and movement around parked vehicles, and what is beyond the vehicle in front. Scan to the sides at intersections and where foliage hides the view, and check side mirrors and over the shoulder before turning. Scan behind when changing lanes, turning across a bike lane, slowing, backing or descending a long or steep hill, more often in heavy traffic, so you can respond to a tailgater by changing lanes, tapping the brakes or adjusting speed.
Respect and responsibility
Commit to restraints for everyone, fitness to drive, empathy, respect for others' space, avoiding conflict regardless of fault, and caring for the road environment. Traffic advisories from officials, management centers and apps (electronic signs, radio, social media, websites) help you avoid delays and hazards. Litter causes crashes and can spark wildfires, so Washington sets minimum fines for littering and illegal dumping, with local ordinances that may differ; you and your passengers must secure what you carry. Idling releases carbon monoxide, lethal in a garage, and adds pollution: turn the engine off when parked a while, drive smoothly, keep tires inflated, and carpool or use transit. The Clean Car Law requires vehicles from model year 2009 and later to meet strict clean-air standards before registration, licensing or sale; dispose of vehicles and parts through a recycling center. After each drive, self-evaluate: did anything surprise me, did I surprise anyone, was my driving legal, proficient and smooth, and what should change next time? Skills fade, so keep reviewing them and track changes in laws and vehicle technology.
Practise this with Washington Driver License questions
More of this guide
Your WDL number and License Express, the 30-day rule for new residents, standard versus enhanced cards and REAL ID, the instruction permit at 15 or 15½, the 6-month, 50-hour and 6-clean-month rules at 16 and 17, the intermediate license passenger and 1 a.m. to 5 a.m. limits, agricultural permits, the two exams and their 2-year validity, renewals and the 8-year rule, offenses that cost the license, implied consent, the .08 and .02 BAC and 5 ng THC limits, test refusal, the open container law and the 10-day address rule.
Title and registration, the 5-day report of sale and 15-day title transfer, plates front and rear, the $25,000/$50,000/$10,000 insurance minimums, driver assistance systems and their limits, 2/32-inch tread, the half-hour headlight rule, high beams at 500 and 300 feet, brake lights at 100 feet, hand signals, the 10-inch air-bag distance, belt fit, rear-facing to 2, harness to 4, boosters to 4 feet 9 inches and no front seat under 13, hand-to-hand and hand-over-hand steering, braking levels, ABS, pitch, roll and yaw, reference points and blind zones.
Yielding to pedestrians until they clear your lane and one more, service animals, school buses on two-lane and multilane roads and doubled fines, transit buses pulling out, large vehicles and the 450-foot stop, seeing both headlights before merging, snowplows, motorcycles and the full lane, bicyclists and the 3-foot rule, bike lanes, trains and the 15 to 50-foot stop, the Emergency Notification System sign, light rail, agricultural vehicles and emergency vehicles.
Keep right except to pass, no backing on a freeway, treating a dead signal as a four-way stop, every light color and arrow including right and left turns on red, ramp meters, sign colors, stop, yield, speed limit, keep right, safety cameras, variable speed signs, one way, do not enter, wrong way, no passing, center turn lane and work zone signs with doubled fines, white and yellow lines, medians, the 300-foot center-lane limit, HOV, reversible, reserved and toll lanes, crosswalks, bike lanes and buffers, stop lines, fire lanes, sharrows and bicycle boxes, with pictures of the signs.
Every intersection is a crosswalk, four-way and two-way stops, uncontrolled intersections, turning into the closest lane and signaling 100 feet ahead, U-turns, T and Y intersections, mid-block crossings, calming circles, roundabouts at 15 to 25 mph, diverging diamonds, the 20 mph school zone, work zones, the emergency zone move-over or 10-under rule and 50 mph cap, the full no-parking list with its 30, 5, 75, 20, 50, 12 and 15-foot distances, curb colors, the Dutch Reach, children and animals left in cars, parallel and hill parking, disabled and EV spaces, towing, loads, animals, ferries and beach driving.
Fatal crash factors, risk awareness and the plan-communicate-check-execute-evaluate routine, what speeding does, safe speed for conditions, the two-vehicle-length space, merging and zipper merging, eye-lead time and the 15-second count, fields of vision, night driving within 400 feet, curves and the laws of motion, slippery roads, black ice, skids and hydroplaning, blowouts, engine, headlight and accelerator failures, flares at 200 to 300 feet, what to do after a crash, the 4-day collision report, injuries and 911, power lines and the 35-foot rule, the emergency kit, police stops and the 15-day ticket rule.