Signs, Signals, and Pavement Markings
Key Takeaways
- California test questions often use sign shape before sign wording: octagon means stop, downward triangle means yield, diamond means warning, pentagon means school, round yellow means railroad warning, and pennant means no passing.
- A flashing red light works like a stop sign, while a flashing yellow light means slow down and continue only with caution.
- Double solid yellow lines prohibit passing in both directions, but they may be crossed for a permitted left turn when it is safe.
- White lane lines separate traffic moving in the same direction; yellow lane lines separate opposing traffic.
- A dark traffic signal should be handled as an all-way stop unless an officer or other traffic control directs otherwise.
Signs, Signals, and Pavement Markings
California DMV questions often describe what you see before asking what you should do. The safest approach is to translate each control into an action: stop, yield, caution, no passing, lane change allowed, or lane change prohibited. Do not wait for a perfect picture of the sign; the test may give only the shape, color, or signal behavior.
Sign Shapes and Colors
| Control | Meaning to remember | Driver action |
|---|---|---|
| Red octagon | Stop | Full stop before the limit line, crosswalk, or intersection |
| Red-and-white downward triangle | Yield | Slow, be ready to stop, and let others go first when required |
| Yellow diamond | Warning | Expect a hazard, curve, merge, intersection, or road condition ahead |
| Yellow or fluorescent pentagon | School zone or school crossing | Slow and watch for children near the roadway |
| Round yellow RR sign | Railroad crossing ahead | Slow, look both ways, and be ready to stop |
| Yellow pennant on the left | No-passing zone | Stay behind traffic until passing is legal again |
| White rectangle with black or red text | Regulatory rule | Obey the posted instruction, such as speed or lane direction |
| Orange diamond or temporary sign | Work zone | Reduce speed, expect workers, equipment, cones, or lane shifts |
Signal Rules
| Signal | What it means on test day |
|---|---|
| Steady red | Stop. A right turn on red may be allowed only after a complete stop, no posted ban, and a full yield to pedestrians and traffic. |
| Red arrow | Stop and do not turn in that direction until a green signal or green arrow allows it. |
| Steady yellow | The signal is changing. Stop if you can do so safely. |
| Flashing red | Treat it like a stop sign: stop, yield, then proceed only when safe. |
| Flashing yellow | Slow down and proceed carefully; do not treat it as a required stop. |
| Green arrow | Protected movement in the arrow direction, but still check the intersection before moving. |
| Dark signal | Treat the intersection as an all-way stop unless directed by an officer or other control. |
Pavement Markings
Yellow lines separate traffic moving in opposite directions. White lines separate lanes moving in the same direction. A broken line usually permits crossing when safe; a solid line warns you not to cross except where the law allows.
| Marking | Rule |
|---|---|
| Double solid yellow | Do not pass in either direction; cross only for a legal left turn or where signs direct. |
| Solid plus broken yellow | Passing may be legal only for traffic next to the broken line. |
| Double solid white | Do not cross; common near HOV or special-use lanes. |
| Center left-turn lane | Use for left turns or U-turns only, not passing or regular travel. |
| Limit line | Stop before the wide white line, not in the crosswalk. |
Test-Day Pattern
When a question combines controls, follow the most restrictive safe rule. A green light does not let you enter a blocked intersection. A right-turn signal does not remove the duty to watch for pedestrians and bicycles near the curb. A broken line does not make a pass safe if visibility, traffic, or signs say otherwise.
The exam favors drivers who read the road early. Identify the control, pick the legal action, and then ask whether pedestrians, bicyclists, railroad tracks, or work-zone workers require extra caution before you move.
You approach an intersection where the signal is completely dark. Another vehicle reaches the cross street at the same time on your right. What should you do?
A road has two solid yellow center lines. Which action best matches California pavement-marking rules?