US road signs, and what each one actually means

Every sign on the permit test, 136 of them, grouped the way the federal manual groups them. Shape and color carry the meaning before the legend does, which is why the same octagon means stop in every state.

Regulatory signs

39

Every sign in this group has a statute behind it, so disobeying one is a citable offense on its own.

Stop

R1-1

The duty is a complete stop, wheels no longer turning, at whichever of these you reach first: a painted stop line.

All Way plaque

R1-3P

Every approach to this intersection is stop-controlled, so all drivers must stop.

Yield

R1-2

Priority belongs to whatever is already using the road you want, vehicles and pedestrians alike.

Yield Here To Pedestrians

R1-5

Yield to pedestrians at the marked yield line ahead of the crosswalk, not at the crosswalk itself.

In-Street Pedestrian Crossing

R1-6

State law requires drivers to yield (or stop) for pedestrians within the crosswalk at this location.

Speed Limit

R2-1

A ceiling fixed by law, and it assumes the best case: dry pavement, clear sight lines, light traffic.

No Right Turn

R3-1

A right turn out of this approach is prohibited.

No Left Turn

R3-2

A left turn out of this approach is prohibited, so the movement has to be made at another intersection.

No Turns

R3-3

Neither left nor right turns are permitted; go straight through.

No U-Turn

R3-4

Turning back on yourself is prohibited at this opening, so carry on and find a legal place to reverse direction.

Mandatory Movement Lane Control

R3-5

Traffic in this lane must travel in the direction the arrow shows.

Optional Movement Lane Control

R3-6

From this lane you may go straight through or make the turn shown.

Right (Left) Lane Must Turn Right (Left)

R3-7

If you are in the named lane you are required to make that turn.

Advance Intersection Lane Control

R3-8

Diagram of which movements are available from each lane at the intersection ahead, so you can pick your lane early.

Two-Way Left Turn Only

R3-9b

The center lane is reserved for left turns by traffic traveling in either direction and must not be used for through travel or passing.

Do Not Pass

R4-1

Passing is prohibited from this point until a sign or marking permits it again.

Pass With Care

R4-2

Passing becomes lawful again from here, and that is the whole of it.

Slower Traffic Keep Right

R4-3

Vehicles moving slower than the general flow must use the right-hand lane.

Keep Right

R4-7

The divider immediately ahead has to finish up on your left.

Keep Left

R4-8

The mirrored version of R4-7: the obstruction ahead is taken on its left-hand side instead.

Stay In Lane

R4-9

Lane changes are prohibited through this section.

Do Not Enter

R5-1

Entry in this direction is banned outright, because the lanes past the sign run at you rather than with you.

Wrong Way

R5-1a

Every lane around you faces the other way.

No Trucks

R5-2

Trucks are prohibited on this road or at this movement.

No Bicycles

R5-6

Riding a bicycle past this point is prohibited, typically because the road carries speeds or a shoulder profile that leaves no room for one.

No Pedestrians

R5-10c

Pedestrians may not use this road or facility.

One Way (arrow)

R6-1

One direction of travel is permitted, the one the arrow points.

One Way (vertical)

R6-2

Same rule as R6-1, mounted to be read from the cross street: the roadway it faces takes traffic one way.

Divided Highway Crossing (Keep Right of Median)

R6-3

Crossing or turning here, keep the median on your left and use the right-hand roadway.

Roundabout Directional

R6-4, R6-4a, R6-4b

Circulate around the central island in the direction the chevrons point.

No Parking Any Time

R7-1

A parking ban runs for the whole length the sign governs, at every hour of every day.

No Parking (symbol)

R8-3

Parking is prohibited in the direction the arrow indicates.

No Pedestrian Crossing

R9-3

Crossing on foot is prohibited here, so anyone walking has to carry on to the next legal crossing point.

Stop Here On Red

R10-6

On red the stop happens right here, at a post deliberately set well back from the crossing.

No Turn On Red

R10-11

Stopping does not buy the turn here.

Left Turn Yield On Green

R10-12

The round green permits the left turn without protecting it.

Turning Vehicles Yield To Pedestrians

R10-15

Drivers turning at this signal must yield to pedestrians crossing with the walk indication.

Road Closed

R11-2

The road ahead is closed to all traffic.

Weight Limit

R12-1

The structure or the surface beneath it cannot carry more than the posted gross figure.

Warning signs

55

A diamond reports a condition and orders nothing.

Turn

W1-1

The alignment breaks sharply, close to a right angle.

Curve

W1-2

A gradual bend rather than a corner.

Reverse Turn

W1-3

Two sharp turns in opposite directions, the first in the direction the arrow shows.

Reverse Curve

W1-4

Two curves in opposite directions ahead.

Winding Road

W1-5

Bends keep coming, at least three of them, swapping direction with no usable straight in between.

One-Direction Large Arrow

W1-6

Mounted at the point where the alignment breaks, and the arrow gives the only way through: the road does not continue straight.

Two-Direction Large Arrow

W1-7

The road you are approaching runs both left and right from here.

Chevron Alignment

W1-8

Marks the direction of the curve; several are placed through the bend so one is always in view.

Combination Horizontal Alignment / Intersection

W1-10

There is a side road joining inside the curve ahead.

Hairpin Curve

W1-11

The road doubles back on itself at very low speed.

Cross Road

W2-1

Another road cuts straight across yours just ahead, so traffic can arrive from the left and the right at once.

Side Road

W2-2

A single arm meets your road from one side only, and drivers waiting on it often have a poor view of you.

T Intersection

W2-3

The road you are on ends ahead at a T intersection; you must turn left or right.

Circular Intersection (Roundabout Ahead)

W2-6

A circulating intersection is coming up.

Stop Ahead

W3-1

There is an octagon beyond this point that a driver at speed will not pick out in time.

Yield Ahead

W3-2

A yield sign is coming; be ready to slow and yield.

Signal Ahead

W3-3

There is a signal head past the crest or the bend, sited where drivers reach it with little time to react.

Be Prepared To Stop

W3-4

Traffic ahead may be stopped or stopping; slow now.

Reduced Speed Limit Ahead

W3-5

A lower speed limit begins shortly; start slowing so you are legal when you reach it.

Merge

W4-1

Two traffic streams join ahead and drivers on both must adjust speed and position.

Lane Ends

W4-2

One of the through lanes ends ahead and its traffic must move over.

Added Lane

W4-3

A whole extra lane opens on the entry side, so joining traffic has somewhere to go and nobody has to change lanes or yield.

Cross Traffic Does Not Stop plaque

W4-4P

You are stopping but the road you are crossing is not controlled, so wait for a full gap.

Road Narrows

W5-1

The running width shrinks, on one edge or on both, while the lane count holds.

Narrow Bridge

W5-2

Two lanes still cross the structure, but the shoulders disappear and the barriers pinch in.

One Lane Bridge

W5-3

Only one vehicle can cross at a time; yield to any vehicle already on the bridge.

Divided Highway (begins)

W6-1

From here the two directions run on their own pavement with a median between them.

Divided Highway Ends

W6-2

The median ends ahead and you will be facing two-way traffic on a single roadway.

Two-Way Traffic

W6-3

Oncoming vehicles use the next lane over from here, with nothing but paint between the two streams.

Hill

W7-1

The grade falls away steeply enough to build speed on its own.

Bump

W8-1

An abrupt rise in the surface, steep enough to unsettle the suspension at speed.

Dip

W8-2

A short, sharp depression in the road ahead.

Pavement Ends

W8-3

Blacktop runs out at this point.

Slippery When Wet

W8-5

Grip falls away sharply on this stretch once it is wet, so brake.

Loose Gravel

W8-7

Gravel sits loose on top of an otherwise sound road, which stretches braking distances and lets a tire fling a stone at whatever is behind you.

Low Shoulder

W8-9

The shoulder is lower than the traveled lane; leaving the pavement could pull the vehicle off.

Bridge Ices Before Road

W8-13

The bridge deck freezes earlier than the surrounding roadway because cold air passes underneath.

Shoulder Drop-Off

W8-17

There is a significant vertical drop from the pavement edge to the shoulder.

Right (Left) Lane Ends

W9-1

The named lane ends ahead; its traffic must merge into the remaining lane.

Bicycle

W11-1

Watch for bicycles entering or crossing the roadway ahead.

Pedestrian

W11-2

Expect pedestrians in the roadway at or close to this point, with no signal anywhere to hold you for them.

Deer Crossing

W11-3

A known route for deer and other large game across the pavement, busiest at first light and again at dusk.

Emergency Vehicle

W11-8

Fire, ambulance or other emergency vehicles enter the roadway at this point.

Truck

W11-10

Trucks enter or cross the roadway here, often slowly.

Double Arrow

W12-1

Traffic may pass on either side of the obstruction ahead.

Low Clearance

W12-2

The structure ahead has less headroom than the posted figure.

Advisory Speed plaque

W13-1P

The recommended safe speed for the curve or ramp the sign above it warns about, in good conditions.

Dead End

W14-1

This road stops at a barrier or a wall and nothing continues past it.

No Outlet

W14-2

Roads carry on past this point and may branch more than once, but every one of them comes back to this entrance.

No Passing Zone

W14-3

From this pennant until the solid yellow line beside your lane ends.

Playground

W15-1

A playground sits right on the roadside, so a child can reach the curb at a run and without looking.

Downward Diagonal Arrow plaque

W16-7P

The hazard the sign above warns about is at this exact spot, not ahead.

Speed Hump

W17-1

An engineered hump built into the surface to hold speeds down.

Type 3 Object Marker

OM3-L, OM3-R

Marks an obstruction close to or in the roadway; the stripes slope down toward the side you should pass on.

Type 4 Object Marker (End of Roadway)

OM4-1, OM4-2, OM4-3

The roadway ends here; there is no through route beyond this point.

Guide and service signs

11

Direction, services, recreation: three colors doing three jobs, and not one of them carrying a duty.

US Route Marker

M1-4

Identifies a US numbered highway and its route number.

Destination sign

D1-1, D1-2, D1-3

Names the places reached by the route and the direction to take.

Distance sign

D2-1, D2-2, D2-3

Lists upcoming places and how many miles away they are.

Street Name sign

D3-1

Names the cross street at an intersection.

Exit Gore sign

E5-1, E5-1a

Marks the exact point where the exit ramp leaves the mainline, with the exit number if one is assigned.

Exit Number plaque

E1-5P, E1-5bP

Carries the exit number, mounted on top of the advance guide or exit direction sign.

EXIT ONLY panel

E11-1d, E11-1e, E11-1f

The lane beneath this panel leaves the highway; staying in it forces you off.

Rest Area

D5-1, D5-1a, D5-2

Directs road users to a rest area and how far it is.

Hospital

D9-2

The blue H marks a hospital reachable from this route that handles emergency cases.

General Service signs (Gas, Food, Lodging, Telephone)

D9-7, D9-8, D9-9, D9-1

Names which of the road-user services, fuel, a meal, a bed for the night, a phone.

Reference Location sign (mile marker)

D10-1, D10-2, D10-3

A distance post rather than a route number: it says how far along the highway you have come.

Work zone signs

9

Orange is temporary by definition, used only while traffic is being routed around a job.

Road Work Ahead

W20-1

Crews and equipment are at work somewhere on the road past this sign.

Detour

W20-2

Your way through is shut and a signed alternative has been laid out for you.

Road (Street) Closed Ahead

W20-3

The road ahead is closed at the stated distance.

One Lane Road Ahead

W20-4

Two-way traffic will share a single lane ahead, usually under flagger or signal control.

Flagger

W20-7

Someone with a STOP/SLOW paddle is working the traffic past this point.

Workers

W21-1, W21-1a

There are workers on foot inside the work space, close enough to the running lanes to be caught by a mirror.

Shoulder Work

W21-5, W21-5a, W21-5b

The activity is off to the side of the running lanes.

Road Work Next XX Miles

G20-1

Marks the start of an extended work zone and how long it runs.

End Road Work

G20-2

The work zone finishes here and normal conditions, including normal speed limits, resume.

School zone signs

7

A pentagon means school and nothing else, so the outline alone answers the question.

School

S1-1

Warns that a school, school zone or school crossing is at or near this point.

School Crossing assembly

S1-1 with W16-7P

Marks the precise location of a crossing used by schoolchildren.

School Advance Crossing assembly

S1-1 with W16-9P or W16-2P

Warns that a schoolchildren's crossing is coming up at the stated distance.

School Speed Limit When Flashing

S5-1

The lower figure binds only while the beacon is lit, or inside the hours printed on the plaque.

Reduced School Speed Limit Ahead

S4-5, S4-5a

A lower school speed limit begins shortly; start slowing now.

End School Zone

S5-2

The designated school zone finishes here.

End School Speed Limit

S5-3

From this point the regular limit is back in force, even where the marked school zone itself carries on.

Railroad crossing signs

8

Advance warning, crossbuck and the passive versus active distinction.

Grade Crossing (Crossbuck)

R15-1

You are at the tracks, not approaching them.

Number of Tracks plaque

R15-2P

Counts the sets of rails at this crossing.

EXEMPT plaque

R15-3P

Aimed only at the vehicle classes carrying a standing duty to halt at every set of rails.

Grade Crossing Advance Warning

W10-1

Tracks cross the pavement somewhere past this sign.

Grade Crossing and Intersection Advance Warning

W10-2, W10-3, W10-4

There is a crossing very close to a road intersection, so a turn could put you straight onto the tracks.

Low Ground Clearance Grade Crossing

W10-5

The crossing hump is steep enough to strand a long or low vehicle on the tracks.

Do Not Stop On Tracks

R8-8

The rails have to stay clear even when the traffic beyond them has stopped moving.

LOOK

R15-8

A device for people on a pathway or sidewalk: check the rail line in each direction before stepping or riding onto the crossing.

What the shape tells you

Three shapes are reserved for one meaning each, which is the point of reserving them: you can identify a stop sign from behind, in fog, or when snow has covered the legend. Everything else follows a looser pattern.

Octagon

1

Stop, and nothing else. It is the only eight-sided sign, so the shape alone identifies it in fog, in the dark, or from behind when the legend is not readable.

Triangle, point down

1

Yield. The only downward-pointing triangle in the system, and like the octagon it is reserved so that shape alone carries the instruction.

Pennant

1

No passing zone, posted on the LEFT side of the road facing the driver whose passing is restricted. The only sign of this shape.

Diamond

58

A warning. It tells you what the road does next and obliges you to do nothing in particular, which is the distinction test writers probe most often.

Pentagon, point up

4

School zone or school crossing. Shape and color are both unique to this group.

Crossbuck

3

A railroad grade crossing, at the crossing itself. It carries the same legal weight as a yield sign.

Circle

2

A railroad crossing ahead. Round signs are used for one purpose in the federal system, which makes this an easy question and an easy mark to lose.

Vertical rectangle

29

Usually regulatory: a law you must obey. Speed limits, turn restrictions and parking rules take this shape.

Horizontal rectangle

23

Usually guidance: direction, distance and destination. Also used for some regulatory plaques mounted under another sign.

What the color tells you

Color is the fastest question on any permit test and the one people answer from habit rather than from the rule. Orange in particular: drivers read it as a warning like any other, when it specifically means the layout in front of them is temporary and does not match the road as it normally is.

Ready to be tested on these? Florida, Texas, California or New York, each drawn from that state’s own handbook sections.

About the artwork and the source

The signs above are the federal artwork itself. The Manual on Uniform Traffic Control Devices dedicates its own device designs to the public domain in Section 1D.06, so the drawings are reproduced rather than approximated. A handful of signs are excluded by that same section, which names the Interstate Shield, the 511 pictograph and the National Scenic Byway graphic as exceptions, and route markers drawn by individual states sit outside the federal dedication entirely. Anything we do not hold artwork for is shown as its correct shape and color instead, because a plain accurate shape is more use than a confident wrong picture.

Traffic control device designs in the manual are dedicated to the public domain by the manual itself, at Section 1D.06, with named exceptions including the Interstate Shield, the 511 Travel Information pictograph and the National Scenic Byway graphic. Those three are not drawn here and should not be added. Sign designs produced by individual states sit outside the federal dedication entirely.

Source: Manual on Uniform Traffic Control Devices, 11th Edition. Not affiliated with or endorsed by the Federal Highway Administration or any state agency.