Road signs · 45 signs · standard MUTCD artwork
Colorado road signs, explained one sign at a time
Every sign below uses the standard MUTCD design and is paired with three short sections: what it requires, how drivers most often misread it, and what to actually do when it appears. Signs are grouped the way the test groups them — regulatory, warning, and work zone.
Regulatory signs
15 signs
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Stop Regulatory signs -
Four-way stop Regulatory signs -
Yield Regulatory signs -
Do not enter Regulatory signs -
Wrong way Regulatory signs -
Speed limit 25 Regulatory signs -
School speed limit 20 Regulatory signs -
No left turn Regulatory signs -
No U-turn Regulatory signs -
No parking any time Regulatory signs -
One way Regulatory signs -
Keep right Regulatory signs -
Left lane must turn left Regulatory signs -
No passing zone Regulatory signs -
Railroad crossbuck Regulatory signs
Warning signs
25 signs
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Curve ahead Warning signs -
Winding road Warning signs -
Crossroad ahead Warning signs -
T intersection ahead Warning signs -
Roundabout ahead Warning signs -
Merge left ahead Warning signs -
Lane ends Warning signs -
Divided highway ends Warning signs -
Two-way traffic ahead Warning signs -
Signal ahead Warning signs -
Stop sign ahead Warning signs -
Yield sign ahead Warning signs -
Pedestrian crossing Warning signs -
School crossing Warning signs -
Deer crossing Warning signs -
Cattle crossing Warning signs -
Bicycle crossing Warning signs -
Slippery when wet Warning signs -
Steep grade Warning signs -
Narrow bridge Warning signs -
Falling rocks Warning signs -
Low clearance Warning signs -
Added lane Warning signs -
Advisory curve speed Warning signs -
Bridge ices before road Warning signs
Work zone signs
5 signs
How to study these
The written test leans hardest on the signs that look almost identical to each other: stop versus stop-ahead, merge versus added lane, the two school signs. Study one category at a time, then mix them up. Every sign page links to a practice question that uses the same rule, so you can check that you understood the sign rather than just recognised the picture.