Parking and Highway Improvement (C-32) · Lesson 7 of 7

Curb Colors and Fire Lane Clearances

"Curb Colors and Fire Lane Clearances" is lesson 7 of 7 in the Parking and Highway Improvement (C-32) Learning Hub. It opens with "The Five Curb Colors" and works through 5 short steps, then a worked example you can check yourself against.

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Steps in this lesson

  1. The Five Curb Colors
  2. How Curb Markings Are Used
  3. Fire Lane Width and Headroom
  4. Fire Lane Marking and Speed Humps
  5. Choosing Paint and Dead Ends

The worked example in the course applies this lesson to a realistic job in 5 steps, from "Vertical clearance" through "Speed hump".

What you'll be able to do

  • Explain the main idea of "Curb Colors and Fire Lane Clearances" in plain language you can use on the exam.
  • Apply this step with confidence: "Fire Lane Width and Headroom".
  • Apply this step with confidence: "Fire Lane Marking and Speed Humps".
  • Apply this step with confidence: "Choosing Paint and Dead Ends".
  • Test yourself on the worked example and the quick-check quiz inside the classroom.
Curb Colors and Fire Lane ClearancesCURB COLORS (CVC 21458)RedNo stopping, standing or parking(bus loading zone excepted)YellowStop only to load/unload passengersor freight; time per local ordinanceWhiteLoad/unload passengers, or depositmail; time per local ordinanceGreenTime limit parkingas set by local ordinanceBlueParking only for disabled personsand disabled veteransFIRE LANE CHECK (CFC 503.2.1)Clear widthneed 20 ft 0 in = 240 inhave 19 ft 6 in = 234 inFAIL, 6 in shortVertical clearanceneed 13 ft 6 in = 162 inhave 13 ft 0 in = 156 inFAIL, 6 in shortSpeed hump in the lane?Traffic calming devices are prohibitedunless the fire code official approvesMarking words: NO PARKING—FIRE LANE(approved signs or markings, 503.3)Lane fails width and headroom by 6 in each; hump needs approvalWiden the pinch point, raise the canopy, and get the fire code official to approve any humpKeep fire lane signs and markings clean, legible and replaced when worn (503.3)Compare headroom: van stall 98 in, passenger loading 114 in, fire lane 162 inCA MUTCD 2026 3B.18 (CVC 21458); 2025 CFC 503.2.1, 503.3, 503.4.1CC
The diagram for this lesson, exactly as it appears in the Learning Hub.

The first steps of this lesson

Step 1: The Five Curb Colors

The 2026 California MUTCD, Section 3B.18, quotes California Vehicle Code (CVC) Section 21458: red indicates no stopping, standing or parking whether the vehicle is attended or unattended, except that a bus may stop in a red zone marked as a bus loading zone. Yellow indicates stopping only to load or unload passengers or freight for the time specified by local ordinance. White indicates loading or unloading of passengers, or depositing mail in an adjacent mailbox. Green indicates time limit parking, and blue indicates parking limited exclusively to the vehicles of disabled persons and disabled veterans.

Step 2: How Curb Markings Are Used

Section 3B.18 states that in California curb markings are not used to delineate traffic; they are mainly used for parking regulation, and parking regulations must be covered by ordinance or order of the authority having jurisdiction. Where curb markings are used without signs, the Guidance paragraph says a legible word marking such as "No Parking" should be placed on the curb. That section is written for streets and highways, so on a private lot follow the plans and what the fire code official requires. Section 3A.03 adds that blue markings supplement white markings for accessible parking spaces.

The remaining 3 steps, the worked example and the quiz are in the course. This is a preview. The full lesson, with the step-by-step explanations, a worked example and a quick-check quiz, is inside the classroom.

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