Can You Get a Speeding Ticket While Driving Under the Limit?
What the law says: Vehicle Code 22350
The whole section is one sentence:
"No person shall drive a vehicle upon a highway at a speed greater than is reasonable or prudent having due regard for weather, visibility, the traffic on, and the surface and width of, the highway, and in no event at a speed which endangers the safety of persons or property."
Notice what it does not contain: a number. The standard is reasonable or prudent for the conditions, judged against five things the statute names. A speed that is lawful at noon on a dry, empty road can violate the same section at dusk in fog with traffic stacking up ahead.
The hard limits that sit above it
Separate sections set fixed ceilings, and the basic speed law operates underneath them:
- 65 mph is the general maximum on a highway under section 22349(a), except where section 22356 allows a higher posted limit.
- 55 mph applies on a two-lane, undivided highway under section 22349(b) unless that stretch has been posted higher on the basis of an engineering and traffic survey. Passing lanes do not count as extra through lanes.
- Over 100 mph is its own offense under section 22348(b), with escalating fines and possible suspension.
So there are two different questions on any ticket: did you exceed a fixed maximum, or was your speed unsafe for what was in front of you? The second can be true when the first is not.
What it means in practice
The basic speed law is the section that shows up after the crash nobody intended. Rain on an oily road, fog, low sun, a jammed freeway with a sudden stop: the driver was often under the posted limit, and the question afterward is whether that speed left room to stop.
| Condition named in 22350 | What it looks like on the road |
|---|---|
| Weather | Rain, wind, standing water, ice on mountain routes |
| Visibility | Fog, smoke, darkness, sun glare, a blind crest |
| Traffic | Slowing or stopped lanes ahead, pedestrians, school activity |
| Surface | Gravel, potholes, construction plates, wet paint lines |
| Width | Narrow lanes, no shoulder, lane shifts in a work zone |
On the record, a conviction under this section is a traffic conviction involving the safe operation of a vehicle, which section 12810(f) values at one point. For insurance, the conviction and any at-fault accident are separate entries. Under the Insurance Commissioner's regulation, a driver is principally at fault only when their actions were at least 51 percent of the legal cause and the accident caused injury, death, or more than $1,000 in property damage. Unsafe speed for conditions is often the fact that tips that balance.
What to do
- Treat the posted limit as the most you may drive, and set your actual speed by the five conditions above.
- In fog, rain or smoke, ask one question: could I stop within the distance I can clearly see? If not, slow down until you can.
- If you are cited, read the ticket to see which section is charged. A fixed-limit charge and a basic-speed charge are argued differently.
- If the charge is a one-point violation, the DMV handbook explains that a judge may offer traffic violator school, available once in any 18-month period, so the citation is not reported to your insurance company though it stays on the record.
- After a crash, report it as the law requires and let the facts about conditions be documented, including photos of the road and weather.
If a speed conviction has changed what you are paying, you can compare quotes here against your actual record.
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Is it legal to drive the speed limit in heavy fog?
Not necessarily. Section 22350 requires a speed reasonable for visibility and traffic, so the posted limit can still be too fast. Slow to a speed that lets you stop within the distance you can see.
How many points is a basic speed law ticket?
A conviction is a traffic conviction involving safe operation, which section 12810(f) values at one point. Over-100 mph convictions under section 22348(b) are valued at two.
What is the top speed limit in California?
Section 22349 sets 65 mph as the general maximum, with a higher posted limit only where section 22356 allows it, and 55 mph on two-lane undivided highways unless posted higher after a traffic survey.
Can I be at fault for a crash if I was under the limit?
Yes. Fault turns on whether your driving was a legal cause of the crash, and a speed that was unsafe for the conditions can make you principally at fault even when it was under the posted number.