What does the LOOK sign mean?
The LOOK sign (MUTCD R15-8) is a railroad crossing sign under the federal Manual on Uniform Traffic Control Devices, the national standard the states build from. A device for people on a pathway or sidewalk: check the rail line in each direction before stepping or riding onto the crossing.
Source: MUTCD 11th Edition, Part 8, Table 8B-1, checked 2026-09-09.
What shape and color is the LOOK sign?
| MUTCD code | R15-8 |
|---|---|
| Group | Railroad crossing signs |
| Shape | Small horizontal rectangle |
| Color | White background, black legend and border |
What a horizontal rectangle means. Usually guidance: direction, distance and destination. Also used for some regulatory plaques mounted under another sign. Rectangles are the loosely assigned outline in the system, though, so on this sign the shape alone does not tell you its family; the color and the legend do.
What white means. Regulatory. A black legend on a white background is a law, not advice.
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 LOOK sign often mistaken for?
Nothing much, but it is a pathway and sidewalk device under Section 8E.03, not a sign aimed at drivers.
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.