Skip to content

Title 10 — VEHICLES AND TRAFFIC

Chapter 10.62 — IDLING OF VEHICLES

Palo Alto Municipal Code · 2026-09 edition · updated 2026-09-29 · Palo Alto

10.62.010 Intent and purpose.

It is the intent and purpose of this chapter to discourage the idling of vehicle engines in the City of Palo Alto in order to protect public health, improve environmental conditions, conserve energy and resources, promote economic efficiency, and improve quality of life. This intent and purpose shall be effectuated through primarily educational means.

(Ord. 5448 § 2 (part), 2018)

10.62.020 Definitions.

For the purposes of this chapter, these words shall have the following definitions:

(a) “Idle” or “idling” means to operate a vehicle's internal combustion engine while the vehicle is stationary.

(b) “Vehicle” is defined as in California Vehicle Code section 670.

(Ord. 5448 § 2 (part), 2018)

10.62.030 Restriction of vehicle idling.

(a) A vehicle owner or a vehicle operator shall not cause or permit the vehicle to idle on public property, in public rights of way, or on private property that is open to the general public within city limits for more than 3 consecutive minutes.

(b) Subsection (a) of this section shall not apply in any of the following circumstances:

(1) A vehicle is forced to remain stationary because of an official traffic control device, direction of a law enforcement official, or any traffic conditions beyond the operator's control, including traffic congestion, railroad crossings, construction zones, security checkpoints, and vehicle queues for drive-through goods and services;

(2) Idling is necessary to operate defrosters, heaters, air conditioners, or other equipment to prevent a safety or health emergency for human or animal occupants, or to prevent the aggravation of a passenger's disability or health condition, but not

merely to maintain the comfort of vehicle occupants;

(3) Idling is necessary to provide heat to an occupied vehicle if the outside ambient temperature is below 40 degrees Fahrenheit, or idling is necessary to provide cooling to an occupied vehicle if the outside temperature is more than 85 degrees Fahrenheit;

(4) Idling is necessary to power heaters or air conditioners to maintain the comfort of vehicle occupants while waiting for assistance when a vehicle is immobilized due to mechanical problems;

(5) An emergency or law enforcement vehicle, including police, fire, ambulance, public safety, military, or any vehicle being used in an emergency capacity, idles in the course of or in preparation for emergency or law enforcement duties;

(6) An armored vehicle idles while in the course of business;

(7) Idling is necessary to power auxiliary work equipment that is actively in use, including, but not limited to, cargo refrigeration units, waste collectors/compactors, lifts, winches, pumps, compressors, drills, mixers, and other safety and construction equipment. Auxiliary work equipment does not include equipment primarily intended for vehicle cabin comfort or occupancy, such as air conditioning, heating, radio, television, digital displays, or kitchen appliances;

(8) Idling is necessary for any vehicle maintenance, service, repair, inspection, research and development, or diagnostics;

(9) An engine is operated in accordance with instructions from the vehicle manufacturer for proper operation;

(10) Idling is necessary for a licensed private security provider to perform security duties;

(11) A vehicle designed to carry 15 or more passengers idles to maintain comfortable cabin temperatures while paying passengers are on board for up to 10 minutes prior to a scheduled embarkation; or

(12) Applicable federal, state, or local law requires idling.

(Ord. 5448 § 2 (part), 2018)

10.62.040 Enforcement.

Until such time as the City Council designates, by resolution, an intent to administratively enforce this chapter and includes this chapter in a revision to the city's administrative penalty schedule, the city shall not be authorized to enforce this chapter under Chapter 1.08 (Violations), 1.12 (Administrative Penalties - Citations), 1.16 (Administrative Compliance Orders), or by any criminal or civil means. Upon passage of such a resolution or resolutions, enforcement of this chapter shall be available solely through the administrative mechanisms in Chapters 1.12 and 1.16 of this code, and/or written warnings.

(Ord. 5448 § 2 (part), 2018)

10.62.050 Penalties.

The maximum penalty for a first violation of this chapter occurring within a calendar year shall be a written warning with no fine. The maximum fine shall be $100.00 for a second violation and $150.00 for a third and any subsequent violation of this chapter occurring within a calendar year.

(Ord. 5448 § 2 (part), 2018)

Get a plain-English answer with a citation back to this text.

Ask AI about this code
▸Contents — Palo Alto Municipal Code
Palo Alto Municipal Code
  1. Article VIII — A. Board of Education
  2. Title 1 — GENERAL PROVISIONS
  3. Title 2 — ADMINISTRATIVE CODE
  4. Title 4 — BUSINESS LICENSES AND REGULATIONS
  5. Title 5 — HEALTH AND SANITATION
  6. Title 6 — ANIMALS
  7. Title 8 — TREES AND VEGETATION
  8. Title 9 — PUBLIC PEACE, MORALS AND SAFETY
  9. ▸Title 10 — VEHICLES AND TRAFFIC
    Overview
    1. 10.04 Definitions
    2. 10.08 Enforcement and Obedience to Traffic Regulations
    3. 10.10 Temporary Street Closures
    4. 10.12 Traffic-Control Devices
    5. 10.16 Turning Movements
    6. 10.20 One-Way Streets and Alleys
    7. 10.24 Special Stops Required
    8. 10.28 Miscellaneous Driving Rules
    9. 10.32 Pedestrians
    10. 10.34 Abandoned, Wrecked, Dismantled or Inoperative Vehicles
    11. 10.36 Stopping, Standing and Parking - Generally
    12. 10.40 Stopping, Standing and Parking - Loading and Unloading
    13. 10.44 Stopping, Standing and Parking - Prohibited or Restricted
    14. 10.45 Valet Parking
    15. 10.46 College Terrace Residential Parking Permit Program (RPPP)
    16. 10.47 Large Vehicle Parking
    17. 10.48 Trucks and Truck Routes
    18. 10.50 Residential Preferential Parking Districts
    19. 10.51 Crescent Park No Overnight Parking Program
    20. 10.52 Trains
    21. 10.56 Special Speed Zones
    22. 10.60 Parking Violations
    23. 10.62 Idling of Vehicles
    24. 10.64 Bicycles, Roller Skates and Coasters
    25. Chapter 10.04 — DEFINITIONS
    26. Chapter 10.08 — ENFORCEMENT AND OBEDIENCE TO TRAFFIC REGULATIONS
    27. Chapter 10.10 — TEMPORARY STREET CLOSURES
    28. Chapter 10.12 — TRAFFIC-CONTROL DEVICES
    29. Chapter 10.20 — ONE-WAY STREETS AND ALLEYS
    30. Chapter 10.24 — SPECIAL STOPS REQUIRED
    31. Chapter 10.28 — MISCELLANEOUS DRIVING RULES
    32. Chapter 10.32 — PEDESTRIANS
    33. Chapter 10.34 — ABANDONED, WRECKED, DISMANTLED OR INOPERATIVE
    34. Chapter 10.36 — STOPPING, STANDING AND PARKING - GENERALLY
    35. Chapter 10.40 — STOPPING, STANDING AND PARKING - LOADING AND U…
    36. Chapter 10.44 — STOPPING, STANDING AND PARKING - PROHIBITED OR
    37. Chapter 10.45 — VALET PARKING
    38. Chapter 10.46 — COLLEGE TERRACE RESIDENTIAL PARKINGPERMIT PROG…
    39. Chapter 10.47 — LARGE VEHICLE PARKING
    40. Chapter 10.48 — TRUCKS AND TRUCK ROUTES
    41. Chapter 10.50 — RESIDENTIAL PREFERENTIAL PARKING DISTRICTS
    42. Chapter 10.51 — CRESCENT PARK NO OVERNIGHT PARKING PROGRAM
    43. Chapter 10.52 — TRAINS
    44. Chapter 10.56 — SPECIAL SPEED ZONES
    45. Chapter 10.62 — IDLING OF VEHICLES
    46. Chapter 10.64 — BICYCLES, ROLLER SKATES AND COASTERS
    47. Chapter 10.70 — RESERVED
  10. Title 11 — ENVIRONMENTAL IMPACT PROCEDURE
  11. Title 12 — PUBLIC WORKS AND UTILITIES
  12. Title 13 — IMPROVEMENT PROCEDURE
  13. Title 15 — FIRE PREVENTION
  14. Title 16 — BUILDING REGULATIONS
  15. Title 17 — HAZARDOUS MATERIALS STORAGE
  16. Title 18 — ZONING
  17. Title 19 — MASTER PLAN
  18. Article 7 — AUTHORITY FOR AND SCOPE OF MASTER OR GENERAL PLANS.
  19. Article 8 — PROCEDURE FOR ADOPTION OF MASTER OR GENERAL PLAN.
  20. Chapter 19.06 — SPECIFIC PLANS
  21. Chapter 19.10 — COORDINATED AREA PLANS
  22. Title 20 — PRECISE PLANS
  23. Title 21 — SUBDIVISIONS AND OTHER DIVISIONS OF LAND
  24. Title 22 — PARKS

GoCodebook provides public access, search, citation, multilingual explanation, and practical interpretation of legally adopted building regulations. It is not a substitute for the official ICC or California code publications.