Bicycle Law Enforcement

Police play an essential role in supporting bicycle transportation by enforcing the traffic laws that allow all road users to reach their destinations safely. As bicycle travel has grown in popularity, the public has asked law enforcement to become more involved in bicycling issues. This can present challenges for police, because misconceptions about safe bicycling practices and state law are widespread among the public. The Bicyclist Safety and Law Enforcement in-service training program was developed by the Coalition of Arizona Bicyclists in cooperation with the Glendale, AZ police department to provide the most accurate and relevant information available to Arizona police officers. The program covers relevant traffic laws, common crash types and frequency, best bicycling practices, and effective enforcement techniques so that law enforcement officers can be confident when discussing bicycling issues with the public, and can effectively prioritize related enforcement and outreach activities to promote public safety.

Thanks to BikeWalk NC who developed the original material

This brief e-learning training video that will be used internally for all Glendale Police officers. Most of the material refers to state-wide laws and statistics; and is not specific to Glendale. The material was adapted for use in Arizona by the Coalition from Education Resources for Police created by BikeWalk NC.

Special thanks for Glendale Police personnel for their help in developing and reviewing the presentation: Chief Deborah Black, Detective Dan Mooney, Detective Ted Yoder, Officer Andy Lynes, and narrator Bicycle Officer Brian Ong.

The presentation is available in the following forms



The Fruits of Police Training

News Item February 4, 2017

This is why training law enforcement is so important; beyond sworn officers, dispatchers should be informed as to the laws so as not to waste police resources on such non-issues. Do motorists call police when they are impeded by a slow-moving truck or bus? If they do, are police then dispatched? No, of course not, they would change lanes and pass; problem solved without any police intervention. News Item:

February 4 (2017): Traffic Hazard – 8:33 a.m. — Pacific Coast Highway and Seal Beach Blvd — the caller said approximately 30 bicyclists were taking up the entire no. 2 lane. According to police unit S21, none of the bicyclists were violating any laws. No further law enforcement services were required.

Police undoubtedly found bicyclists were indeed using the entire right-hand lane, and it was narrow; correctly determining this is not a violation, and is in fact the recommended and most safe lane position.


10 Responses to “Bicycle Law Enforcement”
  1. admin says:

    GlendaleBicycleLawEnforcement (20151018) Presentation Errata:
    Slide 9 — the count of No_Injury crashes should be 128 (not 178)

  2. admin says:

    If any other Police Departments would like to have the bicycle law enforcement presentation adopted for their own use, The following will be necessary:

    1) Graphics (Police Logo)
    2) City/County crash statistics
    3) City Map (to identify dangerous intersections)
    4) City ordinances or any other changes
    5) Contacts to work with (Bicycle Advocate, Bicycle Officer, Detective, Investigator)
    6) They will need to identify ‘the voice’ who will record the presentation script
    7) They will need to provide the recording facility

    If invited, a member of the Coalition will come out to meet with the Police team and the local bicycle advocate to go over the script to ensure the material is adapted as necessary.

  3. Ed B says:

    NHTSA Materials.
    There are a variety of NHTSA produced materials related to law enforcment and bicycling. Being federal in scope, the material is of necessity somewhat vague; since each state (and even some localities, unfortunately) has some minor variations.

    Enhancing Bicycle Safety: Law Enforcement’s Role refers to a 2 hour CBT (computer based training course) available on cd-rom (! indicating it may be quite old. I tried to order it but it’s not currently available).

    That page refers to a 7-minute NHTSA video, Enforcing Laws for Bicyclists Presented by Corporal Chris Davala of the Maryland State Police, and VP of the IPMBA. And contains some good, if general, information.
    “First, it’s important to repeat that bicyclists have the right to ride on public roadways, unless it is specifically prohibited”.
    “Second, unless you are under 10 years old, riding on the sidewalk may not be the safest place to ride a bicycle. It’s against the law in some areas”

    In Arizona, the only known prohibitions on roadway use are those on fully controlled-access highways (aka “freeways”).

    The (exact origin unclear, is this the self-paced 2 hour interactive CD?) NHTSA materials appear to be available at

  4. admin says:

    Misconceptions about safe bicycling practices and state law are widespread among the public. Bicyclists are advised to ride near the middle, and not to the right, of any lane which is too narrow to share safely side-by-side. This is explicitly legal. Motorist wishing to go faster must change lanes to pass. Learn more from the Glendale PD’s law enforcement training:

  5. Ed says:

    Arizona State University has produced a video, which appears to be aimed at novice bicyclists, covering a wide range of bicycling issues that bicyclists might face in and around the ASU campus.
    Although it mentions various safety aspects, it also covers parking, and various administrivia specific to ASU.
    The video states well and plainly: “Never ride against traffic, on the road, in a bike lane or on the sidewalk”, and they use the excellent, updated graphic from the Pima County Safety pamphlet. This is good, strong safety messaging.
    The video is almost 9 minutes long. They spent six seconds explaining bicyclist’s position on the road; position one of the most fundamental aspects of bicyclist traffic safety, their entire explanation is:
    “In general, when bicycling, always ride as far right as possible” (at 3:00 in the video)
    I am not going to go off on the use of the term possible vs. the accurate term, practicable.
    This is the sort of bad advice that permeates these sorts of videos (see, e.g. the Chandler Police Dept’s Safety video where they “forgot” the narrow lane exception). Yes, when conditions are perfect, and the lane is wide enough to share safely, and the bicyclist is traveling slower than traffic, and there is no debris at the right, and no storm drains, and no broken pavement, and the bicyclist is not turning left, and the the bicyclist isn’t passing. When all those conditions are met, yes, the bicyclist must ride as far right as practicable.
    If they’re really that constrained for time, and they’re going to use a weasel word like ‘generally’ anyway, it would be more reasonable to say:
    “In general, when bicycling, ride near the center of the lane, and not as far right as possible”
    Proper lane position protects cyclists both against losing control from edge hazards, as well as being most visible to others. There is also a brief statement about sharrows much later in the video which might lead people to think sharrows grant some special privileges to bicyclists, and worse that the absence of them mean bicyclists must therefore ride as far right as possible — neither is true.
    See more on where to ride on the road.

  6. admin says:

    Traffic Taboo: Law Enforcement’s Key Role in Bicyclist Safety by Mighk Wilson

  7. admin says:

    Reports on Facebook of Tempe PD selectively targeting bicyclists for “rolling stop” enforcement at 13th and Farmer. This is an intersection of two low-speed neighborhood collector roads, with an all-way stop.
    There have been 2 bike-MV crashes reported here (and 4 MV-MV crashes, no reported ped crashes) over the eight-year period 2009-2016; both both bike-MV crashes were faulted to the motorist; and in both no or minor injury resulted.

    On 4/11/2018 it was again reported similarly on 5th near Farmer.

  8. admin says:

    From GHSA, Governor’s Highway Safety Assoc, 2017 Report:
    Effective Enforcement Starts with Training
    Effective enforcement of bicycle safety laws starts with officer training. Most police officers, however, receive little if any training on traffic safety laws as recruits and once on the job are likely given no or limited direction by leadership to focus on non-motorized users. “Cops don’t enforce laws they don’t know and won’t enforce laws they can’t defend,” pointed out Peter Flucke, President of Wisconsin-based WE BIKE, etc. which has delivered bicyclist and pedestrian safety training to law enforcement officials in more than 30 states (some through SHSO-provided funding). That fact, coupled with a lack of support from the top and an understanding of how officers should prioritize their time to focus on those most at risk, reinforces the need for training.
    This presents an opportunity for SHSOs to partner with state and local law enforcement agencies to fill this gap. As discussed earlier in this report, Section 402 and 405(h) funds may be expended to support bicyclist safety training for
    police officers that addresses state laws and their enforcement. But what should this training look like?…

  9. admin says:

    Very illuminating and professionally produced 11 minute video:
    Understanding Cyclists’ Position on the Roadway
    For our friends in Law Enforcement

  10. admin says:

    I’ve reproduced an email involving a motorized bicyclist who was “pulled over” by Phoenix PD; the traffic stop related to the police officer’s confusion over a motorized bike (not requiring license, insurance, tags, etc) vs. a moped (which requires all that stuff.
    Note how the written response embeds further misunderstanding, along with a veiled threat about “…not impeding traffic”. And how Officer Sills either misunderstands or misstates what constitutes an impeding violation. The driver of a motor vehicle cannot be in violation of impeding in the curb lane (28-704) so long as he is operating at a reasonable speed for the type of vehicle he is operating; this is why, e.g. a heavily load truck, or a tractor, or a ridden animal, animal drawn, or street sweeper, etc, etc are NOT in violation of the impeding statue, despite their slow speed; to interpret otherwise would be to ban slow-speed vehicles from roads, which was never the intent of 28-704A. 28-704C still applies to all, but only on 2-lane roads, and is not a ban, but rather compels the slow driver to provide the opportunity for faster drivers to overtake, and only WHEN SAFE.
    Officer Sills is no doubt further mixing or confusing a bicyclist’s duty of keeping right (28-815A) without regard for the many exceptions; especially the exception that nearly always applies to laned roads in the Phoenix and metro area: “If the lane in which the person is operating the bicycle is too narrow for a bicycle and a vehicle to travel safely side by side within the lane”.

    Impeding is not the, or a, problem — maintaining safe space is.

    Ok, gals and guys, below is the response I received via email from the Phoenix Police Dept.


    Unfortunately, the legislature has presented law enforcement with 2 laws
    that contradict each other. Yes the NEW law says you’re OK. Problems
    exist when officers are not made aware of changes in law and especially
    when laws contradict each other. As for the 15 MPH in the curb lane,
    that’s Ok as long as you are not impeding traffic and then it’s a
    problem. It is a gray area as to whether or not an assisted bike is
    considered a bike or just another motor vehicle. Either way, all
    traffic laws must be followed.

    Officer Terry Sills
    Traffic Complaint Coordinator
    602-534-SPEED (7733)

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