What does the Grade Crossing Advance Warning sign mean?
The Grade Crossing Advance Warning sign (MUTCD W10-1) is a railroad crossing sign under the federal Manual on Uniform Traffic Control Devices, the national standard the states build from. Tracks cross the pavement somewhere past this sign. Come down to a speed you could stop from, and check the rails both ways rather than waiting for something to tell you a train is coming.
Source: MUTCD 11th Edition, Part 8, Table 8B-1, checked 2026-09-09.
What shape and color is the Grade Crossing Advance Warning sign?
| MUTCD code | W10-1 |
|---|---|
| Group | Railroad crossing signs |
| Shape | Circle, 36 inches diameter |
| Color | Yellow background, black X and RR legend and border |
What a circle means. 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.
What yellow means. General warning of a permanent condition ahead.
Railroad crossing signs. Advance warning, crossbuck and the passive versus active distinction. Rare on the road, common on the test, and the questions turn on who has right of way.
What is the Grade Crossing Advance Warning sign often mistaken for?
The crossbuck (R15-1) at the crossing itself. W10-1 is the only round warning sign in the manual and is the one exception to the orange rule inside work zones, where it stays yellow.
|  |
|---|---|
| GroupRailroad crossing signs | GroupRailroad crossing signs |
| ShapeCircle, 36 inches diameter | ShapeTwo crossed blades forming an X |
| ColorYellow background, black X and RR legend and border | ColorRetroreflective white with the words RAILROAD CROSSING in black |
| What it meansTracks cross the pavement somewhere past this sign. | What it meansYou are at the tracks, not approaching them. |
Which signs get mistaken for the Grade Crossing Advance Warning sign?
Cross RoadW2-1The railroad advance warning sign (W10-1), which is a yellow circle with an X, not a cross-shaped symbol in a diamond. Also Side Road (W2-2), where the road joins from one side only.
Grade Crossing and Intersection Advance WarningW10-2, W10-3, W10-4The plain W10-1 round sign. These show the geometry of the tracks relative to the side road.
What does the permit test ask about the Grade Crossing Advance Warning sign?
These 2 questions are from the practice bank, with the answer marked.
A round yellow sign is used for exactly one thing. It warns of:
- A.A curve ahead
- B.A railroad crossing ahead(correct answer)
- C.A roundabout ahead
- D.A school zone ahead
Source: MUTCD W10-1
A round sign warns of:
- A.A roundabout
- B.A railroad crossing ahead(correct answer)
- C.A dead end
- D.A rest area
Why: The circular yellow sign carrying a large X and two Rs is the advance warning for a railroad crossing. Look, listen and be ready to stop.
Source: Federal MUTCD, 11th Edition (FHWA)
What are the other railroad crossing signs?
All 8 railroad crossing signs on one page, or every US road sign by shape and color.
Test yourself on this sign and the rest of the set with a road signs practice test for Florida, Texas or California.
The artwork is the federal design itself, which the manual dedicates to the public domain in MUTCD 11th Edition, Part 1, Section 1D.06, checked 2026-09-09. The Interstate Shield, the 511 pictograph and the National Scenic Byway graphic are named exceptions and are not reproduced anywhere on this site.
Source: Manual on Uniform Traffic Control Devices, 11th Edition. Not affiliated with or endorsed by the Federal Highway Administration or any state agency.