Oklahoma Road Signs Practice key terms

A sign that states a law, rule, or required action, such as STOP, YIELD, or a speed limit. Drivers must obey it; violating one is a traffic offense, not just a suggestion.

A white rectangular sign with black numerals showing the maximum lawful speed in miles per hour on that road under normal conditions. Slower speeds may still be required by weather, traffic, or visibility.

A red octagon with white letters requiring a complete halt at the stop line, crosswalk, or edge of the intersecting roadway. You must yield to all traffic and pedestrians before proceeding.

A red-and-white downward-pointing triangle meaning you must slow down and give the right-of-way to cross traffic and pedestrians. Stop only if necessary to avoid a collision.

The legal priority to move through an intersection or roadway space while others wait. Signs such as YIELD and STOP, plus traffic signals and pavement markings, assign it.

An intersection where all approaches have STOP signs. Vehicles proceed in the order they arrived; if two arrive at once, the one on the right goes first.

A regulatory sign showing what you must not do, commonly a red circle with a diagonal slash over a symbol, such as NO U-TURN or NO LEFT TURN. The restriction applies as posted.

A regulatory sign, often white-on-black or with an arrow, that requires a specific movement such as turn left only or straight ahead only. Choosing another path is a violation.

An overhead or roadside sign assigning lanes to movements or vehicles, such as left-turn-only or bus-only. Drivers must be in the correct lane before the movement begins.

A yellow diamond sign alerting drivers to a change or hazard ahead, such as a curve, intersection, or narrowing road. It does not itself set a legal requirement but calls for reduced speed and attention.

A small yellow rectangular sign below a warning sign giving a recommended safe speed for the hazard, such as 25 MPH through a curve. It is a suggestion, not the posted legal limit.

A yellow diamond showing a bending arrow, indicating a turn or curve ahead. A plaque may show a suggested speed; slow before entering because braking mid-curve reduces control.

A yellow diamond with a cross or side-road symbol showing an intersection ahead where you may need to yield or stop. Watch for vehicles entering from the side road.

A yellow sign showing lanes merging, ending, or shifting, such as a merge or added-lane symbol. It tells you to adjust speed and position before the change occurs.

A yellow diamond showing two arrows joining into one, warning that traffic from another lane or ramp will combine with yours. Entering traffic must usually yield.

A yellow diamond warning of surface hazards such as slippery when wet, loose gravel, or a bump. Reduce speed and increase following distance when you see one.

A large yellow rectangular sign with a black arrow pointing toward the curve, placed along sharp turns to guide steering. Chevrons supplement the curve warning sign.

A sign giving directions, destinations, distances, or route information, typically green, blue, or brown. It helps navigation rather than imposing a rule.

A sign identifying a numbered highway, such as an interstate shield or a state route outline. It confirms which road you are on and helps you follow directions.

The red, white, and blue shield marking an Interstate highway. Even numbers generally run east-west and odd numbers north-south; three-digit numbers usually loop or spur off a parent route.

A blue sign listing nearby amenities such as gas, food, lodging, or a hospital, often with distance. It helps drivers plan stops without leaving the highway.

An orange sign warning of construction, maintenance, or a temporary traffic pattern ahead. Orange signals that normal rules or lanes may be changed and penalties for speeding are often higher.

A worker using a paddle or sign to stop and release traffic through a work zone. Obey the paddle and the worker's signals; a flagger's direction overrides normal right-of-way rules.

The cones, barrels, barricades, signs, and markings that redirect traffic through a work zone. These devices replace normal lane lines and must be followed as if they were permanent.

A sign marking an area near a school where speed limits are reduced during posted hours or when children are present. Watch for children and crossing guards and obey the lower limit.

A yellow-green diamond showing pedestrians walking, marking a place where students cross. It may be paired with a reduced-speed plaque active during school hours.

A yellow diamond with a walking-person symbol warning of a crosswalk ahead. Slow down and be ready to stop for people on foot.

A sign indicating a bike lane, shared lane, or bicycle crossing, often yellow for warnings or white for rules. It alerts drivers to expect cyclists and to share the road.

A yellow circular sign with a black X and two R's marking a railroad crossing ahead. Slow down, look both ways, and listen; trains cannot stop quickly.

A white X-shaped sign with black letters reading RAILROAD CROSSING at the tracks. It means yield to trains; a smaller sign below may give the number of tracks.

Flashing red lights and a lowering gate at a crossing. Stop when lights flash or the gate starts down, remain stopped until the gate rises and lights stop, and never drive around a gate.

A passenger train operating on tracks that may share or cross streets. Treat its signals and crossings like railroad crossings, and never stop on tracks.

The meaning carried by a sign's outline: octagon means stop, triangle means yield, diamond means warning, rectangle means regulation or guide, and pentagon marks a school zone or crossing.

The meaning carried by a sign's background: red for stop or prohibition, yellow for warning, orange for work zones, green for guidance, blue for services, and brown for recreation or points of interest.

Painted lines, arrows, and words on the road that guide and regulate traffic. A solid line generally means no crossing, a broken line means passing or changing lanes is allowed when safe.

Arrows painted in a lane showing the required or permitted movement, such as left turn only. Get into the correct lane before the arrow's start.

A solid white line across a lane marking where vehicles must stop for a sign, signal, or crosswalk. Stop behind it so pedestrians and cross traffic have room.

A marked path for pedestrians across a road, shown by parallel lines or a ladder pattern. Drivers must yield to pedestrians in it, and stopping on it is generally prohibited.

Electric red, yellow, and green lights controlling traffic at intersections or lanes. A steady red means stop, green means proceed when clear, and a flashing red is treated as a stop sign.

A pavement symbol, often called a sharrow, showing that bicyclists and motor vehicles share the lane. Drivers should not crowd or pass a cyclist within that lane.