No person driving or in charge of a motor vehicle may permit it to stand upon a public street unattended without first stopping the engine, locking the ignition, removing the key from the ignition, and, when standing upon any grade, turning the front wheels to the curb or side of the highway. If a vehicle is left running in a public or private parking lot, the hand brake shall be left on and any automatic transmission shall be placed in the "park" mode.
(CAC 9.36.010; AO No. 78-72; AO No. 2003-135, § 1, 10-21-2003)
A. 
The provisions of section 9.36.010 pertaining to a person driving or in charge of a motor vehicle standing upon a public street unattended without first stopping the engine, locking the ignition, and removing the key from the ignition do not apply to a vehicle equipped with a remote ignition start device, which is capable of starting a vehicle's ignition without the vehicle's ignition key, if
The vehicle is locked and equipped with an anti-theft feature which prevents the vehicle from being driven without the ignition key being properly inserted;
B. 
The provisions of section 9.36.010 regulating unattended vehicles shall not apply to vehicles operated by the police or fire department, any public or private ambulance, any public utility vehicle, or any municipal vehicle providing scheduled public transportation.
C. 
The provisions of section 9.36.010 regulating unattended vehicles shall not apply to any vehicle of a city department or public utility while necessarily in use for construction or repair work, or any authorized police vehicle when on official police business other than an emergency nature.
(AO No. 2003-135, § 1, 10-21-2003)
A. 
No person exempted under the provisions of 9.36.015A shall allow an unattended vehicle motor vehicle to idle for more than 20 minutes.
(CAC 9.36.010; AO No. 78-72; AO No. 2003-135, § 1, 10-21-2003)
[1]
Editor's note — This section was originally designated as AMC Section 9.36.020 but was renumbered due to a preexisting section with that number.
A. 
The driver of a vehicle may not back the vehicle unless such movement can be made with safety and without interfering with other traffic or any fixed or moveable objects.
B. 
The driver of a vehicle may not back the vehicle upon any shoulder or roadway of any controlled access street.
(CAC 9.36.020; AO No. 78-72; AO No. 80-4; AO No. 94-68(S), § 26, 8-11-1994)
A. 
No person shall operate a motor vehicle upon any sidewalk, recreational trail or pathway, except to cross upon a permanent or properly authorized or temporary driveway.
B. 
Electric personal motor vehicles, as defined in AS 28.90.990, are permitted to operate on sidewalks, recreational trails and pathways.
C. 
Except as otherwise provided in section 9.38.070, the sidewalk may be used by vulnerable road users, even when a bicycle lane is present, so long as they do so in a manner that does not create hazard to pedestrians and other vulnerable road users.
(CAC 9.36.030; AO No. 78-72; AO No. 86-195; AO No. 89-52; AO No. 2011-113(S), § 93, 11-22-2011, eff. 12-22-2011; AO No. 2016-67, § 2, 6-21-2016; AO No. 2023-65(S-1), § 9, 10-9-2023)
A. 
No person may drive a vehicle when there are more than three people in the front seat, which number shall include the driver.
B. 
No passenger in a vehicle may ride in such position as to interfere with the driver's view ahead or to the sides, or to interfere with the driver's control over the vehicle.
C. 
No driver may allow a vehicle to be loaded in such a manner as to interfere with the driver's view ahead or to the sides, or to interfere with the driver's control over the vehicle.
D. 
No person may drive any motor vehicle with any sign, poster, nontransparent material or an accumulation of snow, ice or frost upon the front windshield, side wings, or side or rear windows of such vehicle which materially obstructs, obscures or impairs the driver's clear view of the street or any intersecting street.
(CAC 9.36.040, 9.44.350; AO No. 78-72; AO No. 80-4; AO No. 89-52; AO No. 90-24; AO No. 2011-113(S), § 94, 11-22-2011, eff. 12-22-2011)
A. 
No person may drive a motor vehicle upon a highway or a vehicular way or area with mirrored tinting material on any window of the vehicle.
B. 
Except as provided in this section, no person may drive a motor vehicle upon a highway or a vehicular way or area with aftermarket tinting material or aftermarket striping material on any window of the vehicle.
C. 
Aftermarket tinting of vehicle windows is permissible as follows:
1. 
The glass immediately in front of the driver may have a strip of tinting material applied to the top edge, known in the industry as an "eyebrow"; the eyebrow shall not extend downward more than five inches from the top of the glass.
2. 
The windows immediately to the driver's right and left may have tinting material that permits at least 70 percent light transmittance. If a medical exception under subsection D is applicable, the windows immediately to the driver's right and left may have tinting material permitting at least 40 percent light transmittance and no less.
3. 
The rear door windows, quarter glasses, and back glasses may have tinting material that permits at least 40 percent light transmittance.
4. 
Limousines and passenger buses used to transport persons for hire, motor homes and vehicles identified by the vehicle manufacturer as multipurpose may have tinting material that complies with Standard No. 205, Glazing Materials, in 49 CFR 571.205 (2006).
D. 
The windows of a vehicle for medical reasons may have tinting material that permits less than 70 percent light transmittance but no less than 40 percent light transmittance as specified in subsection C subject to the following conditions:
1. 
A driver or a passenger who frequently travels in the vehicle is required for medical reasons to be shielded from the direct rays of the sun and each of these certification requirements is met:
a. 
The medical reasons shall be included with specificity in a certified statement on professional letterhead no more than one year old by the patient's treatment physician licensed to practice medicine in this state.
b. 
The statement of medical reasons for window tinting certified by the patient's treatment physician is made available for inspection upon request by a law enforcement official.
c. 
The vehicle, the patient requiring sun protection and, if the patient is not the vehicle owner, the estimated frequency of travel to warrant medical window tinting must be identified in the treatment physician's certified statement.
d. 
The treatment physician's professional contact information shall be current and included on the certification.
2. 
The physician's certified statement does not require a notary.
3. 
If the treatment physician's statement meets the requirements of subsection D.1 and is included in a valid medical prescription no more than one year old, the prescription is allowed to serve as the treatment physician's certified statement.
4. 
A citation for violating this subsection shall be voided or dismissed if proof of a treatment physician's certification or prescription stating the medical reasons and meeting the requirements of this subsection D, previously issued to the person and valid at the time of the citation, is produced to the designated official at the Anchorage Police Department. Proof may be produced on appeal, or at any time before the specified date for appeal.
E. 
Tinting materials shall be green, gray or neutral smoke in color.
F. 
Light transmittance shall be measured by using a light transmittance measuring device with an allowance for manufacturing variances of plus or minus three percent. The accuracy of the device shall be certified by the manufacturer of the device.
G. 
In this section, the term "light transmittance" means the ratio, expressed as a percentage, of the amount of total light that is allowed to pass through a window, including glassing, to the amount of total light falling on the window.
(AO No. 94-68(S), § 27, 8-11-1994; AO No. 2011-113(S), § 95, 11-22-2011, eff. 12-22-2011; AO No. 2013-41(S-1), § 1, 4-23-2013)
No person may open the door of a motor vehicle on the side available to moving traffic unless and until it is reasonably safe to do so and can be done without interfering with the movement of other traffic, nor may any person leave a door open on the side of a vehicle available to moving traffic for a period of time longer than necessary to load or unload passengers.
(CAC 9.36.050; AO No. 78-72)
A. 
The driver of any motor vehicle when traveling upon a downgrade may not coast with the gears or transmission of such vehicle in neutral.
B. 
The driver of a truck or bus when traveling upon a downgrade may not coast with the clutch disengaged.
(CAC 9.36.070; AO No. 78-72)
A. 
No motor vehicle, except an authorized emergency vehicle as defined in section 9.04.010, shall follow within 500 feet of any authorized emergency vehicle being operated under the provisions of section 9.08.080.
B. 
No motor vehicle, except an authorized emergency vehicle, shall drive into or park such vehicle within 500 feet where fire apparatus has stopped to answer to a fire alarm.
C. 
No person may stop or park a vehicle in the vicinity of a crash or other emergency so as to interfere with the movement of emergency vehicles or injured persons, or create additional hazards to the safety of persons by blocking the visibility of flares or other emergency signaling devices.
(CAC 9.36.080; AO No. 78-72; AO No. 89-52; AO No. 2011-113(S), § 96, 11-22-2011, eff. 12-22-2011)
No vehicle may be driven over any unprotected hose of a fire department when laid down on any street, private road or driveway to be used at any fire or alarm of fire, without the consent of the fire department official in command.
(CAC 9.36.090; AO No. 78-72)
A. 
No person may throw or deposit upon any street any glass bottle, glass, nails, tacks, wire, cans or any other substance likely to injure any person, animal or vehicle upon such street.
B. 
Any person who drops, or permits to be dropped or thrown, upon any street any destructive or injurious material shall immediately remove the such material or cause it to be removed.
C. 
Any person removing a wrecked or damaged vehicle from a street shall remove any glass or other injurious substance dropped upon the highway from such vehicle.
(CAC 9.36.100; AO No. 78-72; AO No. 80-4)
No driver of a vehicle may drive between the vehicles composing a funeral or other authorized procession while they are in motion and when such vehicles are conspicuously designated as required in this chapter. This provision shall not apply at intersections where traffic is controlled by traffic control signals or police officers.
(CAC 9.36.110; AO No. 78-72)
A funeral composed of a procession of vehicles shall be identified as such by the display upon the outside of each vehicle of a pennant or other identifying insignia, or by such other method as may be determined and designated by the traffic unit.
(CAC 9.36.130; AO No. 78-72; AO No. 2011-113(S), § 97, 11-22-2011, eff. 12-22-2011)
A. 
No person shall participate in, join or conduct a parade unless that parade has been authorized by the traffic engineer. No person shall participate in, join or conduct a parade except in accordance with a permit issued by the traffic engineer for that parade.
B. 
The traffic engineer shall issue parade permits in accordance with municipal regulations promulgated pursuant to chapter 3.40.
C. 
No person shall knowingly interfere, interrupt, frustrate, obstruct or otherwise hinder a parade authorized by this section.
(CAC 9.36.140; AO No. 78-72; AO No. 79-209)
No person driving a motor vehicle shall transport any animal in the back of the vehicle in a space intended for any load on the vehicle on a street unless the space is enclosed or has side and tail walls to a height of at least 46 inches extending vertically from the floor, or the animal is cross tethered to the vehicle, or is protected by a secured container or cage, in a manner which will prevent the animal from being thrown, falling or jumping from the vehicle.
(CAC 9.36.150; AO No. 78-72; AO No. 82-191; AO No. 89-52)
A. 
No person driving a motor vehicle shall knowingly permit any person to ride on any vehicle or upon any portion thereof not designed or intended for the use of passengers.
B. 
No person shall ride on any vehicle or upon any portion thereof not designed or intended for the use of passengers.
C. 
Subsections A and B of this section shall not apply to any employee engaged in the necessary discharge of the employee's duty.
D. 
Subsections A and B of this section shall not apply to a person riding completely within or upon vehicle bodies in space intended for any load on the vehicle if the person is seated on the bed or floor of the vehicle or upon a seat built below the level of sideboards of the vehicle, or within truck bodies in space intended for merchandise.
E. 
No person shall knowingly drive a motor vehicle which is towing any person riding upon a motorcycle, motorized bicycle, bicycle, coaster, roller skates, sled, skis, toy vehicle, ice skates or similar device.
F. 
No person shall drive a motor vehicle which is towing a trailer or other object if the trailer or object contains any passengers, unless the trailer or object is specifically designed for transporting passengers.
(CAC 9.36.170; AO No. 78-72; AO No. 89-52; AO No. 94-68(S), § 28, 8-11-1994; AO No. 2011-113(S), § 98, 11-22-2011, eff. 12-22-2011; AO No. 2014-42, § 23, 6-21-2014)
It is unlawful for the directing officer or the operator of any railroad train to direct the operation of or to operate the train in such a manner as to prevent the use of any street for purposes of travel for a period of time longer than five minutes, except that this provision shall not apply to trains or cars in motion other than those engaged in switching.
(CAC 9.36.180; AO No. 78-72)
A person driving a commercial motor vehicle, or a company whose business involves the operation of a commercial motor vehicle, upon a highway or vehicular way or area, shall comply with the transportation of hazardous materials, hazardous substances, or hazardous waste regulations set forth in 17 AAC 25.200, adopted herein and incorporated by reference.
(CAC 9.36.190; AO No. 78-72; AO No. 2011-113(S), § 99, 11-22-2011, eff. 12-22-2011)
A. 
No person may consume marijuana or drink alcoholic beverages while driving a vehicle on a roadway or street.
B. 
No person may drive a vehicle at such times as there is marijuana or an open container of alcoholic beverage in the passenger compartment of the vehicle, unless:
1. 
The vehicle is:
a. 
A limousine licensed pursuant to title 11;
b. 
With the exception of the area occupied by the driver, equipped with darkened windows which obscure the view into the vehicle and such windows are fully closed; and
c. 
Equipped with a partition between the driver and the area where the marijuana or open container of alcoholic beverage is located and that partition is fully closed.
2. 
The marijuana or open container of alcoholic beverage is:
a. 
In the trunk of a motor vehicle; or
b. 
On a motor driven cycle, or behind the last upright seat in a motor home, station wagon, hatchback, or similar trunkless vehicle, if the marijuana or open bottle, can, or other receptacle of alcoholic beverage is enclosed within another container; or
c. 
Behind a solid partition that separates the vehicle driver from the area normally occupied by passengers; or
d. 
In the possession of a passenger in a motor vehicle for which the owner receives direct monetary compensation and that has a capacity of 12 or more persons.
C. 
For the purposes of this section, the term "open" means, when referring to a bottle, that the seal around the lid, cap or cork has been broken, or that the lid, cap or cork has been removed.
(AO No. 78-72; AO No. 80-4; AO No. 87-8; AO No. 2015-85, § 1, 9-24-2015)
No person may drive a vehicle while wearing any device or instrument which substantially impairs the person's hearing. This prohibition includes but is not limited to the use of any headset or earphones containing or connected to a source of sound such as a radio, tape player or record player. This section does not apply to police officers, emergency vehicle operators, safety helmets, or to any object or device the wearing of which is prescribed by a medical doctor.
(AO No. 78-72; AO No. 2011-113(S), § 100, 11-22-2011, eff. 12-22-2011)
No automobile, truck, camper, motorcycle or other motorized vehicle designed primarily for road use may operate on, travel across, park on or otherwise utilize the surface of the body of frozen water located at or near mile 16½ on the Glenn Highway, within the southeast quarter of Section 25 and the northeast quarter of Section 36 of Township 15 North, Range 2 West, Seward Meridian, Alaska, and commonly known as Lower Fire Lake.
(AO No. 214-76; AO No. 78-72)
It is unlawful for any driver, passenger, pedestrian or other person to enter or remain within a public or private parking lot in violation of a clearly visible sign posted by the owner or operator of such lot, which sign sets forth rules of occupation of the lot during specified times.
(AO No. 83-51)
A. 
Except as provided below in subsection C, a person:
1. 
Sixteen years of age or older shall not occupy a motor vehicle while it is being driven on a highway unless restrained by a safety belt; and
2. 
Shall not drive a motor vehicle on a highway unless restrained by a safety belt.
B. 
Except as provided below in subsection C, a driver shall not transport a child under the age of 16 in a motor vehicle unless the driver provides the required safety device and properly secures each child as follows:
1. 
A child less than one year of age or a child one year of age, or older who weighs less than 20 pounds, shall be properly secured in a rear-facing child safety seat that meets or exceeds standards of the U.S. Department of Transportation and is used in accordance with the manufacturer's instructions;
2. 
A child one or more years of age, but less than five years of age, who weights 20 pounds or more, shall be properly secured in a child restraint device that meets or exceeds the standards of the U.S. Department of Transportation and is used in accordance with the manufacturer's instructions;
3. 
A child over four years of age, but less than eight years of age, who is less than 57 inches in height and weighs 20 or more pounds, but less than 65 pounds, shall be properly secured in a booster seat secured by a seat belt system or by another child passenger restraint system that meets or exceeds the standards of the U.S. Department of Transportation and is used in accordance with the manufacturer's instructions;
4. 
A child over four years of age, who exceeds the height or weight requirements in subsection B.3 above, shall be properly secured in a seat belt; and
5. 
A child over eight years of age, but less than 16 years of age, who does not exceed the height and weight requirements in subsection B.3 above, shall be properly secured in a child safety device approved for a child of that size by the U.S. Department of Transportation, or in a safety belt, whichever is appropriate for the particular child in the sole discretion of the driver.
C. 
Subsections A and B do not apply to:
1. 
Passengers in a school bus, unless the school bus is required to be equipped with seat belts by the U.S. Department of Transportation, or passengers in an emergency vehicle.
2. 
A vehicle operator operating in the course of employment delivering mail or newspapers from inside the vehicle to roadside mail or newspaper boxes.
3. 
A person or class of persons exempt by regulation under AS 28.05.096.
4. 
A person required to be restrained by safety belts under subsection A or B, if the motor vehicle is not equipped with safety belts.
5. 
Operators or passengers of motorcycles, motor-driven cycles, off-highway vehicles, electric personal mobility vehicles, snowmobiles, and similar vehicles not designed to be operated on a highway.
D. 
A person shall not remove a safety belt from a vehicle solely to be exempted under subsection C.4.
E. 
Notwithstanding any other provision of law, a peace officer shall not stop or detain a motor vehicle to determine compliance with subsection A, or issue a citation for a violation of subsection A, unless the peace officer has probable cause to stop or detain the motor vehicle.
F. 
In a prosecution under subsection A, the prosecution shall prove the peace officer stopping or detaining the vehicle personally observed the violation of subsection A before stopping or detaining the vehicle, or otherwise had probable cause to stop or detain the vehicle.
G. 
All safety devices referred to in this section shall be worn in accordance with the manufacturer's specifications.
(AO No. 89-52; AO No. 94-68(S), § 29, 8-11-1994; AO No. 2011-113(S), § 101, 11-22-2011, eff. 12-22-2011)
A. 
No person shall, unless authorized by permit, move or operate upon any roadway surface on any weekday, other than a holiday, any slow-moving equipment, construction equipment, farm equipment, oversize vehicles or other vehicle unless such vehicle is capable of:
1. 
Maintaining a speed at least within ten miles per hour of the posted speed limit; and
2. 
Traveling entirely within one lane.
3. 
Such travel shall not occur during the hours of 7:00 a.m. to 9:00 a.m. and 4:00 p.m. to 6:00 p.m.
B. 
This section shall not apply to government-owned or government contracted equipment engaged in the authorized maintenance or construction of a roadway or using the roadway surface to respond to an emergency.
(AO No. 89-52; AO No. 2011-113(S), § 102, 11-22-2011, eff. 12-22-2011)
A. 
No person shall, at any time unless authorized by permit, drive or operate upon any freeway or expressway, as defined in the Official Streets and Highways Plan, or upon any controlled access highway any slow-moving equipment, construction equipment, farm equipment, or other vehicle not capable of:
1. 
Maintaining a speed at least within ten miles per hour of the posted speed limit; and
2. 
Traveling entirely within one lane.
B. 
This section shall not apply to government-owned or government contracted equipment responding to an emergency, engaged in the authorized maintenance or construction of the controlled access highway, expressway or freeway it is traveling upon, or traveling to or from an authorized maintenance or construction site located on that freeway or expressway.
(AO No. 2011-113(S), § 103, 11-22-2011, eff. 12-22-2011)
A. 
Every vehicle upon a street within the municipality shall display lighted lamps and illuminating devices, as required in this title for different classes of vehicles:
1. 
At any time from one-half hour after sunset to one-half hour before sunrise; and
2. 
At any other time when, due to insufficient light or unfavorable atmospheric conditions, persons and vehicles on the street are not clearly discernible at a distance of 1,000 feet ahead;
3. 
Subject to exceptions with respect to parked vehicles.
B. 
Stop lights, turn signals and other signaling devices shall be lighted as prescribed for the use of such devices.
C. 
Every vehicle traveling upon a highway, vehicular way, or area posted with signs requiring the use of headlights, shall display lighted lamps or illuminating devices.
(CAC 9.44.030; AO No. 78-72; AO No. 80-4; AO No. 94-68(S), § 41, 8-11-1994; AO No. 2011-113(S), § 104, 11-22-2011, eff. 12-22-2011)
Any motor vehicle may be equipped with no more than two spotlamps, and every lighted spotlamp shall be so aimed and used that no part of the high-intensity portion of the beam will strike the windshield, or any windows, mirrors or occupant of another vehicle in use, except when the light is used by a police officer during the performance of official duties.
(CAC 9.44.180; AO No. 78-72; AO No. 89-52; AO No. 94-68(S), § 41, 8-11-1994)
Whenever a motor vehicle is being operated on a roadway or shoulder adjacent thereto during the times specified in section 9.36.290, the driver shall use a distribution of light, or composite beam, directed high enough and of sufficient intensity to reveal persons and vehicles at a safe distance in advance of the vehicle, subject to the following requirements and limitations:
A. 
Whenever the driver of a vehicle approaches an oncoming vehicle within 500 feet, such driver shall use a distribution of light, or composite beam, so aimed that the glaring rays are not projected into the eyes of the oncoming driver. The lowermost distribution of light, or composite beam, specified in section 9.44.230A.2 or section 9.40.120B.2 shall be deemed to avoid glare at all times, regardless of road contour and loading.
B. 
Whenever the driver of a vehicle approaches another vehicle from the rear, within 300 feet, such driver shall use a distribution of light permissible under this chapter other than the uppermost distribution of light specified in section 9.44.230A.1 and section 9.40.120.
(CAC 9.44.240; AO No. 78-72; AO No. 94-68(S), § 41, 8-11-1994)
Any motor vehicle may be operated under the conditions specified in section 9.36.290 when equipped with two lighted lamps upon the front thereof capable of revealing persons and vehicles 100 feet ahead in lieu of lamps required in section 9.44.230, provided, however, that at no time shall it be operated at a speed in excess of 20 miles per hour.
(CAC 9.44.250; AO No. 78-72; AO No. 94-68(S), § 41, 8-11-1994)
A. 
During the times specified in section 9.36.290, any lighted lamp or illuminating device upon a motor vehicle, other than headlamps, spotlamps, auxiliary lamps, flashing turn signals, vehicular hazard warning lamps and school bus warning lamps, which projects a beam of light of an intensity greater than 300 candlepower shall be so directed that no part of the high-intensity portion of the beam will strike the level of the roadway on which the vehicle stands at a distance of more than 75 feet from the vehicle.
B. 
Except as required in section 9.44.190, no person may drive or move any vehicle or equipment upon any street with any lamp or device thereon displaying a red light visible from directly in front of the center thereof.
C. 
Flashing lights are prohibited except as authorized or required in sections 9.44.190 through 9.44.210, and 9.36.350.
(CAC 9.44.270; AO No. 78-72; AO No. 80-4; AO No. 94-68(S), § 41, 8-11-1994)
A. 
The department of public works may use a blue flashing light for purposes of identification on snow removal equipment when in service upon a municipal street.
B. 
A tow car shall be equipped with a flashing amber warning light visible at 300 feet in normal sunlight to the front, rear and both sides. The tow car shall display the amber warning light during preparation at the location from which a disabled vehicle is to be towed. The flashing amber warning light shall be displayed when the tow car is towing a vehicle at a speed slower than the normal flow of traffic, during the hours of darkness when taillights, stoplights or turn signals on the tow car are obscured by the towed vehicle. The flashing warning light may not be displayed except as provided in this section.
C. 
Certain vehicles as follows shall be equipped with a flashing amber warning light visible at 300 feet in normal sunlight either to the front, rear or sides or from all positions, which shall be displayed as follows:
1. 
A vehicle of the state department of transportation and public facilities or of the municipality used in street maintenance, inspection, survey or construction shall display the flashing amber warning light when working on or along a street.
2. 
A vehicle of a public utility company, when actually engaged in the construction, removal, repair, maintenance or inspection of a public utility facility, shall display a flashing amber light when necessarily parked or moving slower than the normal traffic flow on or along a street.
3. 
A motor vehicle actually engaged in towing a house or building on a street shall display a flashing amber light.
4. 
A pilot car required by an oversize permit issued by the state department of transportation and public facilities or of the municipality shall display a flashing amber light while actually engaged in the movement described in the permit.
5. 
A motor vehicle that is engaged in snow removal from private property shall display a flashing amber light when it is necessary to move onto, across or within eight feet of a street while removing snow, or a motor vehicle that is engaged in snow removal from subdivision streets shall display a flashing amber light while so engaged.
D. 
It is unlawful to operate any snow removal and other street maintenance and service equipment on any street unless the lamps thereon comply with and are lighted when and as required by the standards and specifications adopted as provided in this chapter.
(CAC 9.44.280; AO No. 78-72; AO No. 80-4; AO No. 89-52; AO No. 94-68(S), § 41, 8-11-1994)
A. 
Every motor vehicle when operated upon a street shall be equipped with a horn in good working order and capable of emitting sound audible under normal conditions from a distance of not less than 200 feet, but no horn or other warning device shall emit an unreasonably loud or harsh sound or a whistle. The driver of a motor vehicle shall, when reasonably necessary to ensure safe operation, give audible warning with the vehicle's horn, but may not otherwise use such horn upon a street.
B. 
No vehicle may be equipped with, nor shall any person use upon a vehicle, any siren, whistle, bell or other audible warning device, except as otherwise permitted in this section.
C. 
Any commercial vehicle may be equipped with a theft alarm signal device which is so arranged that it cannot be used by the driver as an ordinary warning signal.
D. 
Every authorized emergency vehicle shall be equipped with a siren, whistle, bell or other audible warning device, capable of emitting sound audible under normal conditions from a distance of not less than 500 feet and of a type approved by the police department, and such siren may not be used except when such vehicle is operated in response to an emergency call or in the immediate pursuit of an actual or suspected violator of the law, in which latter events the driver of such vehicle shall sound the siren when reasonably necessary to warn pedestrians and other drivers of the approach thereof.
(CAC 9.44.320; AO No. 78-72; AO No. 80-4; AO No. 94-68(S), § 41, 8-11-1994; AO No. 2011-113(S), § 105, 11-22-2011, eff. 12-22-2011)
A. 
No person shall use compression brakes while operating a motor vehicle within the municipality, except in an emergency.
B. 
For the purpose of this section, the term "compression brake" means a hydraulic engine attachment that converts a diesel engine into an air compressor and, when engaged, operates to slow the vehicle.
(CAC 9.44.330; AO No. 78-72; AO No. 94-68(S), § 41, 8-11-1994; AO No. 2011-113(S), § 106, 11-22-2011, eff. 12-22-2011)