MO Road Signs Practice flashcards

32 cards. Read the term and the definition here. The deck at the top of this page is optional.

Stop sign shape

Red octagon with white letters. It requires a complete stop at the stop line, crosswalk, or before entering the intersection, followed by yielding to traffic and pedestrians.

Yield sign shape

Red-and-white inverted triangle. Slow down, be prepared to stop, and give the right-of-way to cross traffic; stop only if traffic requires it.

No passing zone pennant

Yellow-and-black triangular pennant on the left side of the road marking the start of a segment where passing is prohibited in your direction.

Lane-use arrow signs

White-on-black arrows above a lane show required movements: a straight arrow means the lane must go straight, a curved arrow means that lane must turn.

Advisory speed plaque

Yellow rectangular plaque below a warning sign giving the recommended maximum speed for the condition ahead, such as a curve, under ideal conditions.

Chevron alignment sign

Large black-on-yellow arrow-shaped sign placed on the outside of a sharp curve to show the direction of the turn and guide drivers through it.

Slippery when wet sign

Yellow diamond showing a car with wavy skid marks. It warns that the surface loses traction when wet; reduce speed and avoid sudden braking or steering.

Interstate route marker

Red, white, and blue shield with numerals. Even numbers run east-west and odd numbers run north-south; numbers increase from south to north and west to east.

Mile marker sign

Small green sign with white numerals placed at one-mile intervals along the shoulder; it identifies your location for emergencies and navigation.

Service sign colors

Blue signs with white symbols mark services such as gas, food, lodging, and hospitals; brown signs mark recreation and cultural sites; green signs mark destinations.

Flagger symbol sign

Orange diamond showing a person holding a flag. It warns that a flagger controls traffic ahead, and the flagger's signals override signs and signals.

Channelizing devices

Orange cones, drums, and vertical panels that define the temporary path through a work zone; do not cross them, and follow temporary markings.

Work zone speed limit

Posted speed limit sign in a work zone; the reduced limit is enforceable where the sign is placed, not automatically at the first orange warning sign.

School advance warning sign

Fluorescent yellow-green pentagon with a black pedestrian symbol warning of a school crossing ahead; slow down and watch for children.

Pedestrian signal meanings

A white walking person means proceed; a flashing orange hand means do not start; a solid orange hand means stop and do not enter the crosswalk.

School bus stop law

On an undivided road, traffic in both directions must stop when a school bus flashes red lights and extends its stop sign; a median separates the directions.

Crossbuck sign

White X-shaped sign with 'RAILROAD CROSSING' letters marking the crossing; yield to trains, and a crossbuck alone means no active warning devices.

Railroad advance warning

Yellow circular sign with 'RR' and a diagonal line warning of a crossing ahead; a plaque below gives the number of tracks.

Railroad pavement marking

White 'X' with 'RR' painted on the pavement warning of a crossing ahead; a stop line before the tracks marks where to stop.

Red sign meaning

Red indicates stop, yield, or prohibition; it appears on stop signs, yield signs, do-not-enter signs, and prohibition symbols with a diagonal slash.

Yellow diamond meaning

Yellow diamonds are warning signs; the black symbol or words inside show the condition ahead, such as a curve, intersection, or surface hazard.

Circle and slash

Red circle with a diagonal slash means 'do not'; the black symbol inside shows the prohibited action, such as no U-turn or no trucks.

Double solid yellow line

Two solid yellow lines separating opposite directions of traffic; passing is prohibited in both directions, and the lines should not be crossed.

Edge line markings

Solid white line marking the right edge of the roadway; a solid yellow line may mark the left edge on divided highways.

HOV lane marking

White diamond symbol painted in a lane marking a high-occupancy vehicle or special-use lane; check the accompanying sign for eligibility.

Object marker

Yellow-and-black striped marker at the end of a barrier or island warning of a hazard; a type 3 marker is a vertical rectangle with diagonal stripes.

Do not enter sign

Red square with a white horizontal bar and the words 'DO NOT ENTER'; it marks a one-way roadway against your direction of travel.

Wrong way sign

Red rectangle with white letters reading 'WRONG WAY'; seeing it means you are driving against traffic and should stop and turn around when safe.

Roundabout yield rule

At a roundabout, yield to traffic already in the circle; enter only when there is a gap, and do not stop inside the circle unless traffic requires it.

Steep grade warning

Yellow diamond showing a truck on a downgrade with a percent grade; downshift before descending to avoid brake fade on long grades.

Exit-only lane sign

Green sign with a white arrow pointing down and to the right marking a lane that becomes an exit-only lane; through traffic should move left.

U.S. route marker

White shield with black numerals identifying a U.S. highway; Interstate markers are red, white, and blue shields with numerals.