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Topic 3 · Section 40

Other Important Laws and Precautions

New drivers should be aware of the following California laws and safe driving practices:


Cell Phones and Texting

  • Illegal to use a handheld cell phone while driving.
  • Texting, emailing, or browsing the internet is prohibited and dangerous.
  • Over 18: Hands-free only (earpiece or speakerphone).
  • Under 18: Cannot use a phone at all while driving (except in emergencies).
  • Suggested: Use Do Not Disturb while driving.
  • Fines start around $150+ and increase for repeat offenses.

Headphones/Earbuds

  • You cannot wear headphones or earbuds in both ears while driving or cycling.
  • One ear must be free to hear surroundings.

Smoking with Minors

  • Illegal to smoke or vape in a vehicle with anyone under 18 present.

Open Container Laws

  • No open containers of alcohol in the passenger area.
  • Cannabis: Must be sealed and stored out of reach, like in the trunk.
  • Driving under the influence of alcohol or drugs is illegal.

Littering

  • Throwing items from your vehicle is illegal.
  • Fines up to $1,000.
  • Lit cigarettes can cause wildfires – extremely dangerous.

High Beams Etiquette

  • Use high beams in rural/dark areas with no traffic.
  • Dim your high beams:
    • Within 500 ft of oncoming traffic
    • Within 300 ft of a vehicle you’re following
    • In fog, use low beams instead

Driving in Fog

  • Use low-beam headlights, not parking lights.
  • If visibility is poor:
    • Slow down
    • Use hazards
    • Pull over if necessary
  • Headlights required when visibility < 1000 ft.

Towing & Trailers

  • Speed limit: 55 mph
  • Stay in rightmost lanes
  • Use turnouts on mountain roads if traffic is behind you

Use of Horn

  • Only use to prevent collisions
  • Not for frustration
  • Avoid around animals (like horses)

Road Rage & Courtesy

  • Aggressive driving includes tailgating, speeding, gestures
  • Don’t engage with aggressive drivers:
    • Avoid eye contact
    • Let them pass
    • Report extreme behavior to 911

Drowsy Driving

  • Illegal and dangerous to drive when extremely tired.
  • Warning signs:
    • Nodding off
    • Difficulty focusing
  • Solutions: Rest – not caffeine or music.
  • Teen provisional license holders have night driving restrictions.

Headlight Use

  • Required:
    • 30 minutes after sunset to 30 minutes before sunrise
    • When it is too dark to see from 1,000 feet away
    • “Wipers on, lights on” — if you need the wipers for fog, rain or snow, the low beams are mandatory
    • When clouds, dust or smoke stop you seeing other vehicles
    • On mountain roads and in tunnels — even on sunny days
    • When a road sign says headlights must be on
    • To help others see you when the sun is low on the horizon
  • It is illegal to drive using only your parking lights.

Rainy Weather

  • First rain after dry spell = very slick
  • In hydroplaning:
    • Ease off gas
    • No sudden braking
    • Steer straight

Flooded Roads

  • Don’t guess water depth.
  • Turn around, don’t drown – water can disable or sweep away your vehicle.

Tire Blowout or Engine Failure

  • Blowout:
    • Grip wheel
    • Let car slow naturally
    • Pull over safely
  • Engine dies:
    • Coast off road
    • Use hazard lights

Stuck Accelerator

  • Shift to neutral
  • Apply brakes
  • Steer off road
  • Do not turn off engine until stopped

Automated Enforcement Cameras

  • 📌 New since January 1, 2026 (SB 720). Local governments may run automated camera systems that detect red-light violations.
  • These tickets are issued to the vehicle, not to an identified driver, and carry civil penalties only.
  • Speed safety cameras also operate in a handful of California cities under a separate pilot programme.

Reporting Crashes or Hazards

  • Dial 911 for emergencies.
  • Use CHP non-emergency line for non-critical issues (e.g., debris reports).

Final Notes for New Drivers

  • These rules are for your safety and the safety of others.
  • Stay updated – laws evolve (e.g., cell phone laws, insurance minimums).
  • When unsure, err on the side of caution.
  • Safe driving = attentiveness + responsibility.

Check you have it

179 practice questions cover rules of the road: traffic laws in california, each explaining the reasoning behind its answer.

Practise this topic

Source: California Driver's Handbook (DL 600, rev. 6/2025). Edited by Fernando Aguilera. Aprobify is not affiliated with the California DMV.

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