Oklahoma DMV Permit Test cheat sheet

Sign shapes carry meaning: octagon = stop, inverted triangle = yield, diamond = warning, pennant = no-passing zone, round = railroad advance warning, pentagon = school zone/crossing.

Sign colors carry meaning: red = stop/prohibit, yellow = warning, fluorescent yellow-green = school/pedestrian warning, orange = construction/work zone, white = regulatory, green = guidance/distance, blue = services, brown = recreation/cultural.

A steady red light means stop before the stop line or crosswalk and remain stopped; right turn on red is allowed only after a full stop and only where not prohibited by posted sign.

A flashing red signal is treated as a stop sign: stop, yield to cross traffic and pedestrians, then proceed when clear.

A flashing yellow signal means slow down and proceed with caution; it does not require a stop.

A green arrow means you may proceed in the direction of the arrow; a red arrow means you may not proceed in that direction.

A yellow light warns that the signal is about to turn red; a vehicle already within the intersection when the light turns red may clear the intersection.

Pavement markings: solid yellow lines separate opposing traffic (no passing), broken yellow permits passing when safe, solid white marks the right edge or separates same-direction lanes, and a shared center turn lane has solid yellow lines on both sides.

Railroad crossbucks (X-shaped sign) mark the crossing; flashing red lights and lowered gates require a stop, and a driver must never drive around a lowered gate.

At an uncontrolled intersection, the vehicle that arrives first has the right-of-way; if two vehicles arrive at the same time, the vehicle on the left yields to the vehicle on the right.

At a four-way stop, first to arrive proceeds first; simultaneous arrivals are resolved by yielding to the vehicle on the right.

A vehicle turning left must yield to oncoming traffic going straight or turning right, and must also yield to pedestrians in the crosswalk.

A vehicle entering a roadway from a driveway, alley, private road, or parking lot must yield to all traffic already on the roadway.

A vehicle entering a roundabout yields to traffic already circulating inside the roundabout.

Drivers must yield to pedestrians in a marked or unmarked crosswalk and to blind pedestrians using a white cane or guide dog.

Emergency vehicles using lights and siren have the right-of-way; drivers must pull to the right edge and stop until the vehicle passes.

A vehicle approaching a yield sign must slow or stop and give way to cross traffic and to traffic on the intersecting roadway.

When two vehicles meet on a narrow hill or roadway where passing is unsafe, the vehicle going downhill yields to the vehicle going uphill.

Oklahoma's basic speed law requires driving at a speed reasonable and prudent for conditions; posted limits are maximums, not targets, and the limit may be lower in poor weather.

Unless otherwise posted, the maximum speed limit is 70 mph on rural interstate highways, 65 mph on turnpikes and other divided highways, and 55 mph on two-lane rural highways; limits are lower in urban areas and school zones.

Oklahoma law requires seat belts for the driver and front-seat passengers, and children under 8 years old must be restrained in a child passenger safety seat.

A driver must stop for a school bus with flashing red lights and its stop arm extended; on a divided highway, traffic in the opposite direction is not required to stop.

Drivers must signal a turn or lane change continuously for at least the last 100 feet before the maneuver.

Passing is prohibited on a solid yellow line, on hills and curves where visibility is limited, at railroad crossings, and within marked no-passing zones.

Oklahoma requires liability insurance (minimum limits 25/50/25, i.e., $25,000 per person, $50,000 per accident bodily injury, $25,000 property damage) to register and operate a vehicle.

A vehicle must be moved off the roadway after a crash; a driver must stop, exchange information, and report a crash involving injury, death, or property damage above the statutory threshold.

Use the three-second following rule in good conditions; increase the gap to four or more seconds at night, in rain, or when following large vehicles.

The total stopping distance equals perception distance plus reaction distance plus braking distance; it increases with speed and decreases with better traction.

Hydroplaning occurs when tires ride on a film of water; ease off the accelerator, avoid hard braking, and steer straight until traction returns.

In a skid, look and steer where you want to go and ease off the accelerator; do not slam the brakes on a rear-wheel skid.

Use low-beam headlights in fog, rain, or snow; high beams reflect off precipitation and reduce visibility.

Oklahoma requires headlights from sunset to sunrise and whenever visibility is limited (such as rain, fog, or when wipers are in use).

Check mirrors and turn your head to check blind spots before changing lanes; signal, then move only when the space is clear.

At night, drive at a speed that lets you stop within the distance illuminated by your headlights; overdriving headlights is a leading cause of night crashes.

When a vehicle approaches with high beams on, look toward the right edge of your lane to avoid glare while keeping the vehicle in its lane.

Motorcycles are entitled to a full lane; a driver must not share a lane with a motorcycle and should allow extra following distance because motorcycles stop shorter than cars.

Bicycles are vehicles with the same rights and duties as cars; Oklahoma requires drivers to pass cyclists at a safe distance and not less than three feet.

When passing a pedestrian or cyclist, leave at least three feet of clearance; if that is not possible, wait until it is safe to pass.

Large trucks have large blind spots (no-zones) at the front, rear, and both sides; if you cannot see the truck driver's mirrors, the driver cannot see you.

A truck making a right turn may swing wide to the left first; do not pass a turning truck on the right, because the trailer will swing into that space.

When a school bus stops with red lights flashing, drivers in both directions must stop on an undivided road; only traffic on the opposite side of a divided highway may proceed.

Pedestrians using a white cane or guide dog always have the right-of-way at crosswalks; drivers must stop and remain stopped until the pedestrian clears the lane.

Share the road with farm equipment and horse-drawn vehicles by slowing down and passing only when you have clear sight distance and room.

Oklahoma's per se limit is a blood alcohol concentration (BAC) of 0.08% for drivers 21 and older; a BAC at or above that level is itself a violation.

For drivers under 21, Oklahoma enforces a zero-tolerance standard: a BAC of 0.02% or higher is a violation.

A commercial driver's license holder is subject to a 0.04% BAC limit while operating a commercial motor vehicle.

Implied consent: by driving on Oklahoma roads, a driver agrees to submit to a chemical test; refusing a test results in license revocation even without a conviction.

Alcohol impairs judgment, reaction time, and coordination before the driver feels intoxicated; a driver cannot reliably judge their own impairment.

Time is the only thing that lowers BAC; coffee, cold showers, and food do not speed the elimination of alcohol.

Prescription and over-the-counter drugs, including antihistamines and sleep aids, can impair driving and are treated the same as alcohol under DUI law.

Marijuana and other drugs impair reaction time and lane control; driving under the influence of any intoxicating substance is illegal in Oklahoma.

Designate a sober driver before drinking, or use a rideshare or taxi; never ride with an impaired driver.

Oklahoma issues a learner permit to applicants at least 15½ years old who pass the written knowledge test and vision screening; a licensed driver 21 or older must accompany the permit holder.

A graduated driver license (intermediate) is available at 16 after holding a learner permit for at least six months and completing driver education or supervised driving hours.

A restricted license may be issued to a driver 16 to 17 years old; driving is limited to between 5 a.m. and 10 p.m. unless driving to or from school, work, or a religious activity.

Oklahoma requires liability insurance to register a vehicle; proof of insurance must be carried in the vehicle and shown on request.

Vehicles must pass a safety inspection in certain counties and display a valid license plate with current registration decal; registration must be renewed annually.

A driver must report a change of address to the Department of Public Safety within 10 days of moving.

Oklahoma requires a valid driver license to operate a motor vehicle; driving without a valid license or with a suspended license is a criminal offense.

A vehicle must have functioning headlights, taillights, brake lights, turn signals, horn, and windshield wipers; equipment defects can result in a citation.