Iowa Road Signs Practice key terms

A red octagonal sign with white letters that requires a driver to come to a complete halt at the stop line, crosswalk, or edge of the intersecting roadway before proceeding.

A red-and-white downward-pointing triangle sign telling a driver to slow down and let cross traffic or merging traffic go first, stopping only if necessary to avoid conflict.

A solid white painted line across a lane marking where a vehicle must halt for a stop sign, traffic signal, or crosswalk; drivers stop before the line, not past it.

A marked or unmarked portion of the roadway set aside for pedestrians to cross; drivers must yield to pedestrians within it and must not block it while stopped.

An intersection where traffic from every approach faces a stop sign; vehicles proceed in the order they arrived, and ties are resolved by yielding to the vehicle on the right.

A specific type of all-way stop at a four-legged intersection; the first vehicle to stop goes first, and simultaneous arrivals yield to the right.

The legal priority to move through a given space or maneuver; signs, signals, and rules determine who must yield, and right-of-way is never taken, only given.

A sign that states a law or rule drivers must obey, such as speed limits, lane use, turning restrictions, or parking rules; most are white rectangles with black or red markings.

A yellow diamond-shaped sign that alerts drivers to a change or hazard ahead, such as a curve, intersection, or narrowing road; it does not itself impose a legal requirement.

A sign that gives directional, distance, or destination information, such as route markers, exit signs, and mileage signs; typically green, blue, or brown rather than red or yellow.

A white rectangular regulatory sign showing the maximum lawful speed in miles per hour under normal conditions; driving faster is illegal even if conditions seem safe.

A yellow rectangular sign placed below a warning sign that suggests a safe speed for a hazard such as a curve or ramp; it is a recommendation, not the posted legal limit.

A yellow rectangular sign with a black arrow pointing in the direction of a turn, placed on the outside of sharp curves to guide drivers through the bend.

A yellow warning sign showing two lanes joining into one, telling drivers that traffic from a ramp or side road will enter their lane and that they should adjust speed and space.

A yellow warning sign showing a lane ending, indicating that the right or left lane disappears ahead and drivers in that lane must merge into the continuing lane.

A yellow diamond warning sign with two opposing arrows, placed where a one-way road becomes two-way or where drivers may otherwise forget that oncoming traffic shares the road.

A black-and-white rectangular sign with a single arrow showing that traffic on that street or lane moves in only one direction; entering against the arrow is illegal.

A square red sign with a white horizontal bar and the words DO NOT ENTER, marking a road, ramp, or lane where traffic is prohibited from entering.

A red rectangular sign reading WRONG WAY, placed to alert a driver who is traveling against the legal direction of traffic on a one-way road or ramp.

A yellow pennant-shaped sign on the left side of the road marking the start of an area where passing other vehicles is prohibited; it is the only pennant-shaped sign.

A regulatory sign placed at the end of a no-passing zone indicating that passing is again permitted but should be done only when it is safe and legal.

A yellow circular sign with a black X and two R letters warning that tracks cross the road ahead; drivers should slow, look, and listen before crossing.

A white X-shaped sign with the words RAILROAD CROSSING at a track intersection; it functions like a yield sign, requiring drivers to give way to approaching trains.

A yellow-green diamond or pentagon sign marking an area where children may be present and where reduced speed limits often apply during posted school hours.

A yellow-green pentagon-shaped sign depicting walking children, warning drivers that a marked school crossing is ahead and that they must watch for students and guards.

A yellow diamond warning sign showing a walking figure, indicating that a pedestrian crossing lies ahead and that drivers should slow and prepare to yield.

A yellow diamond warning sign showing a bicycle, alerting drivers that cyclists cross or share the roadway ahead and that they should reduce speed and give space.

A white pavement symbol of a bicycle with two chevrons, painted in a travel lane to show that bicycles and motor vehicles share that lane and to guide cyclists away from parked cars.

A small sign identifying a numbered highway, such as a state or county route; its shape and color vary by road system and help drivers confirm they are on the correct road.

The red, white, and blue shield-shaped marker for numbered Interstate highways; even numbers generally run east-west and odd numbers generally run north-south.

A green guide sign showing the exit number and often the destination or distance, helping drivers identify and prepare for an upcoming interchange exit.

An orange diamond warning sign indicating road construction or maintenance ahead; drivers should slow down, increase following distance, and watch for workers and equipment.

An orange diamond sign showing a worker holding a flag, warning that a person controls traffic ahead; drivers must obey the flagger's signals and be ready to stop.

A small yellow or black-and-yellow striped sign placed on or beside a fixed object such as a bridge pier or island to make the hazard visible to drivers.

A thin reflective post along the roadside or on a curve that outlines the edge of the roadway at night or in poor visibility, supplementing painted edge lines.

The standardized system in which shape and color convey meaning before words are read, such as red for prohibitions, yellow for warnings, orange for work zones, and octagons for stops.

A circular sign, most often yellow with a black railroad symbol; round shape is reserved for railroad advance warnings so drivers recognize the hazard from the back or at a distance.

A horizontally elongated triangular sign, used only for no-passing zones and mounted on the left side of the road to mark where passing becomes illegal.