What does the School Advance Crossing assembly mean?
The School Advance Crossing assembly (MUTCD S1-1 with W16-9P or W16-2P) is a school zone sign under the federal Manual on Uniform Traffic Control Devices, the national standard the states build from. It warns that a schoolchildren's crossing is coming up at the stated distance.
Source: MUTCD 11th Edition, Part 7, Table 7B-1, checked 2026-09-09.
What shape and color is the School Advance Crossing assembly?
| MUTCD code | S1-1 with W16-9P or W16-2P |
|---|---|
| Group | School zone signs |
| Shape | Pentagon with a word or distance plaque below |
| Color | Fluorescent yellow-green background, black legend and border |
What a pentagon, point up means. School zone or school crossing. Shape and color are both unique to this group.
What fluorescent yellow-green means. Pedestrian, bicycle and school warnings. Reserved so those warnings cannot be mistaken for an ordinary hazard.
School zone signs. A pentagon means school and nothing else, so the outline alone answers the question. Fluorescent yellow-green is weaker evidence, because pedestrian and bicycle signs are allowed the same color, and that asymmetry is where the marks go.
What is the School Advance Crossing assembly often mistaken for?
The School Crossing assembly with the diagonal arrow, which marks the crossing itself.
| |
|---|---|
| GroupSchool zone signs | GroupSchool zone signs |
| ShapePentagon with a word or distance plaque below | ShapePentagon with a downward diagonal arrow plaque below |
| ColorFluorescent yellow-green background, black legend and border | ColorFluorescent yellow-green background, black legend and border |
| What it meansWarns that a schoolchildren's crossing is coming up at the stated distance. | What it meansMarks the precise location of a crossing used by schoolchildren. |
What are the other school zone signs?
All 7 school zone 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.