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Thread: The VC Glossary

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    Administrator Allen's Avatar
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    The VC Glossary

    Standard definitions commonly accepted in tranportation engineering.

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    totally louche Bekologist's Avatar
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    Let's make sure the definitions are those backed by an authority. I suggest the moderators remove any posts of definitions not commonly accepted in the field. As an example, 'Inferiority complex' type definitions should be removed.

    these are from the the Federal Highway Administration:

    Five basic types of facilities are used to accommodate bicyclists:

    Shared lane: shared motor vehicle/bicycle use of a "standard"-width travel lane.

    Wide outside lane: an outside travel lane with a width of at least 14 ft (4.2 m).

    Bike lane: a portion of the roadway designated by striping, signing, and/or pavement markings for
    preferential or exclusive use of bicycles.

    Shoulder: a paved portion of the roadway to the right of the edge stripe designed to serve bicyclists.

    Separate bike path: a facility physically separated from the roadway and intended for bicycle use.
    Last edited by Bekologist; 11-04-09 at 11:57 PM.
    "Evidence, anecdote and methodology all support planning for roadway bike traffic."

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    totally louche Bekologist's Avatar
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    from the Uniform traffic code:

    11-1202.Traffic laws apply to persons on bicycles and other human powered vehicles

    Every person propelling a vehicle by human power or riding a bicycle shall have all of the rights and all of the duties applicable to the driver of any other vehicle under chapters 10 and 11, except as to special regulations in this article and except as to those provisions which by their nature can have no application.

    and

    11-1205. Position on roadway
    (a) Any person operating a bicycle or a moped upon a roadway at less than the normal speed of traffic at the time and place and under the conditions then existing shall ride as close as practicable to the right-hand curb or edge of the roadway except under any of the following situations:

    When overtaking and passing another bicycle or vehicle proceeding in the same direction.
    When preparing for a left turn at an intersection or into a private road or driveway.
    When reasonably necessary to avoid conditions including, but not limited to, fixed or moving objects, parked or moving vehicles, bicycles, pedestrians, animals, surface hazards, or substandard width lanes that make it unsafe to continue along the right-hand curb or edge. For purposes of this section, a "substandard width lane" is a lane that is too narrow for a bicycle and a vehicle to travel safely side by side within the lane.
    (b) Any person operating a bicycle or a moped upon a one-way highway with two or more marked traffic lanes may ride as near the left-hand curb or edge of such roadway as practicable.
    "Evidence, anecdote and methodology all support planning for roadway bike traffic."

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    totally louche Bekologist's Avatar
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    from the 2003 MUTCD:

    Bicycle Facilities—a general term denoting improvements and provisions that accommodate or encourage bicycling, including parking and storage facilities, and shared roadways not specifically defined for bicycle use.
    Bicycle Lane—a portion of a roadway that has been designated by signs and pavement markings for preferential or exclusive use by bicyclists.
    Bikeway—a generic term for any road, street, path, or way that in some manner is specifically designated for bicycle travel, regardless of whether such facilities are designated for the exclusive use of bicycles or are to be shared with other transportation modes.
    Designated Bicycle Route—a system of bikeways designated by the jurisdiction having authority with appropriate directional and informational route signs, with or without specific bicycle route numbers. Bicycle routes, which might be a combination of various types of bikeways, should establish a continuous routing.
    Shared-Use Path—a bikeway outside the traveled way and physically separated from motorized vehicular traffic by an open space or barrier and either within the highway right-of-way or within an independent alignment. Shared-use paths are also used by pedestrians (including, skaters, users of manual and motorized wheelchairs, and joggers) and other authorized motorized and nonmotorized users.
    "Evidence, anecdote and methodology all support planning for roadway bike traffic."

  5. #5
    High Roller
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    Vehicular Cycling: Operating a human-powered vehicle on the roadway in accordance with the vehicular rules of the road.
    Last edited by High Roller; 11-06-09 at 07:12 AM.

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    Al noisebeam's Avatar
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    Quote Originally Posted by Bekologist View Post
    Let's make sure the definitions are those backed by an authority.
    Shoulder: a paved portion of the roadway to the right of the edge stripe designed to serve bicyclists.
    Where do you get that definition? This is what I see and have understood as the definition of 'paved shoulder' from FHA:

    Shoulder - the portion of the roadway contiguous with the traveled way for accommodation of stopped vehicles for emergency use, and for lateral support of the base and surface courses.

  7. #7
    High Roller
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    Quote Originally Posted by noisebeam View Post
    Where do you get that definition? This is what I see and have understood as the definition of 'paved shoulder' from FHA:

    Shoulder - the portion of the roadway contiguous with the traveled way for accommodation of stopped vehicles for emergency use, and for lateral support of the base and surface courses.
    Agree with noisebeam. The shoulder is not part of the active roadway and is not intended to be occupied by moving vehicles of any kind.

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    totally louche Bekologist's Avatar
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    not intended to be occupied by moving vehicles of any kind?

    are you sure about that?
    "Evidence, anecdote and methodology all support planning for roadway bike traffic."

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    Al noisebeam's Avatar
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    Not intended is not the same as not permitted.

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    totally louche Bekologist's Avatar
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    what?

    the FHA explicitly calls it part of the roadway. AASHTO guidelines for the development of bicycle facilities consider shoulders part of the roadway.
    "Evidence, anecdote and methodology all support planning for roadway bike traffic."

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    Al noisebeam's Avatar
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    There are laws permitting and in some localities requiring the use of shoulders if passable when driving a bicycle. But shoulders are not (perhaps with some local exceptions) designed, built or maintained (intended) for the traveling use of bicycles or other vehicles.

    For example in TX: http://bicycleaustin.info/laws/tx-bike.html#shoulder

    In AZ: ""Roadway" means that portion of a highway that is improved, designed or ordinarily used for vehicular travel, exclusive of the berm or shoulder."

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    Quote Originally Posted by Bekologist View Post
    Let's make sure the definitions are those backed by an authority. I suggest the moderators remove any posts of definitions not commonly accepted in the field. As an example, 'Inferiority complex' type definitions should be removed.

    these are from the the Federal Highway Administration:

    Five basic types of facilities are used to accommodate bicyclists:

    Shared lane: shared motor vehicle/bicycle use of a "standard"-width travel lane.

    Wide outside lane: an outside travel lane with a width of at least 14 ft (4.2 m).

    Bike lane: a portion of the roadway designated by striping, signing, and/or pavement markings for
    preferential or exclusive use of bicycles.

    Shoulder: a paved portion of the roadway to the right of the edge stripe designed to serve bicyclists.

    Separate bike path: a facility physically separated from the roadway and intended for bicycle use.
    I see that Bekologist is so intent on his ideology of building bikeways to popularize bicycle transportation and thereby reduce motoring that he adds in new kinds of bikeways not in accordance with law, while he ignores the major facility provided for bicycle traffic.

    Here's the California Vehicle Code definition:
    Roadway:
    That portion of a highway improved, designed or ordinarily used for vehicular travel, exclusive of the berm or shoulder. ... (bit for divided highways).

    In states where bicycles are vehicles, no question. In other states, cyclists have the legal status of drivers of vehicles, which then includes them.

    Note that shoulders are not part of the roadway. Neither are they special bicycle facilities, because of their primary engineering use to stabilize the roadway. However, the surface transportation bill of about ten years back stated, and I presume that this has not changed, that it is permissible to spend bicycle transportation funds on "lanes, paths, or shoulders intended for the use of bicyclists." In other words, while shoulders are not bikeways, bicycle funds may be used to improve or to provide shoulders if the intent is to accommodate cyclists. However, since it is impossible to distinguish the source of funds that were used to improve or to provide any particular shoulder, shoulders are not bikeways.

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    Quote Originally Posted by AllenG View Post
    Standard definitions commonly accepted in tranportation engineering.
    There are two very different types of bike path. The one that closely parallels a roadway I named a side path once that type became important in bicycle transportation engineering. The Europeans typically call these cycle tracks.

    The type of bike path that is not a side path has not been given an effective name. Some people call these trails, but that is a misleading name. I have described these as being well-away from roads with few intersections with roads, but that is a mouthful.

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    Quote Originally Posted by AllenG View Post
    Standard definitions commonly accepted in tranportation engineering.
    The name and definition of vehicular cycling have already been advanced.

    However, we need a name for the typical American cycling pattern. I have described this as cyclist-inferiority cycling, much to Bekologist's irritation. I have also used the name incompetent, which also irritates many people. I have just suggested the name negligent, to see how that affects people. But this mix of methods is so prevalent that it has to have a generally accepted name. It is mostly unlawful, but that name conveys a multitude of sins, including the cycling that Hurst recommends.

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    Quote Originally Posted by AllenG View Post
    Standard definitions commonly accepted in tranportation engineering.
    I think that the scope suggested above is unduly wide. We do not commonly argue about standard items found in most of transportation engineering (which field, really, includes railroading, shipping, and aircraft operation). We argue about the terms peculiar to bicycle transportation engineering, some of which have existing standard meanings in highway engineering (such as bike lane), while others have not yet had such standard meanings applied (such as side path).

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    totally louche Bekologist's Avatar
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    your depictions of cyclist behaviors are in no way standard accepted definitions by any stretch of the imagination, john forester.

    and back to SHOULDER:

    Quote Originally Posted by federal highway administration
    Shoulder - the portion of the roadway
    shoulder= part of roadway. thanks for the clarification high roller.
    "Evidence, anecdote and methodology all support planning for roadway bike traffic."

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    genec genec's Avatar
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    Quote Originally Posted by John Forester View Post
    I see that Bekologist is so intent on his ideology of building bikeways to popularize bicycle transportation and thereby reduce motoring that he adds in new kinds of bikeways not in accordance with law, while he ignores the major facility provided for bicycle traffic.

    Here's the California Vehicle Code definition:
    Roadway:
    That portion of a highway improved, designed or ordinarily used for vehicular travel, exclusive of the berm or shoulder. ... (bit for divided highways).

    In states where bicycles are vehicles, no question. In other states, cyclists have the legal status of drivers of vehicles, which then includes them.

    Note that shoulders are not part of the roadway. Neither are they special bicycle facilities, because of their primary engineering use to stabilize the roadway. However, the surface transportation bill of about ten years back stated, and I presume that this has not changed, that it is permissible to spend bicycle transportation funds on "lanes, paths, or shoulders intended for the use of bicyclists." In other words, while shoulders are not bikeways, bicycle funds may be used to improve or to provide shoulders if the intent is to accommodate cyclists. However, since it is impossible to distinguish the source of funds that were used to improve or to provide any particular shoulder, shoulders are not bikeways.
    A shoulder may not be a bikeway, but a bikeway may be a shoulder. Oregon does this quite nicely with Hiway 101 through the entire length of the state. It is approximately 8 feet wide and designated as a bikeway for the entire length.

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    Al noisebeam's Avatar
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    Quote Originally Posted by John Forester View Post
    The name and definition of vehicular cycling have already been advanced.

    However, we need a name for the typical American cycling pattern. I have described this as cyclist-inferiority cycling, much to Bekologist's irritation. I have also used the name incompetent, which also irritates many people. I have just suggested the name negligent, to see how that affects people. But this mix of methods is so prevalent that it has to have a generally accepted name. It is mostly unlawful, but that name conveys a multitude of sins, including the cycling that Hurst recommends.
    Some here have suggested the term adaptive cycling.

    positive as most consider being adaptive a positive trait. but adaptive in an expected behavior based environment can be confusing and unpredictable to others.

    of course vehicular cycling is also adaptive to the ever changing traffic and roadway conditions, but generally within the constraints of following the rules of road for vehicle drivers.

    perhaps unconstrained adaptive cycling, or

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    Quote Originally Posted by Bekologist View Post
    your depictions of cyclist behaviors are in no way standard accepted definitions by any stretch of the imagination, john forester.

    and back to SHOULDER:


    Originally Posted by federal highway administration
    Shoulder - the portion of the roadway
    Bekologist merely cites FHWA for the source of his definition. I suggest that that presents a very wide scope of possible source material.

    The following is quoted from the FHWA University Course on Bicycle and Pedestrian Safety:

    Pavement Design

    Many existing gravel shoulders have sufficient width and base to support shoulder bikeways. Minor excavation and the addition of 75 to 100 millimeters (mm) (3 to 4 in) of asphalt pavement is often enough to provide shoulder bikeways. It is best to widen shoulders in conjunction with pavement overlays for several reasons:

    * The top lift of asphalt adds structural strength.
    * The final lift provides a smooth, seamless joint.
    * The cost is less, as greater quantities of materials will be purchased.
    * Traffic is disrupted only once for both operations.

    When shoulders are provided as part of new road construction, the pavement structural design should be the same as that of the roadway.

    On shoulder widening projects, there may be some opportunities to reduce costs by building to a lesser thickness. A total of 50100 mm (24 in) of asphalt and 5075 mm (23 in) of aggregate over existing roadway shoulders may be adequate if the following conditions are met:

    * There are no planned widening projects for the road section in the foreseeable future.
    * The existing shoulder area and roadbed are stable and there is adequate drainage, or adequate drainage can be provided without major excavation and grading work.
    * The existing travel lanes have adequate width and are in stable condition.
    * The horizontal curvature is not excessive, so the wheels of large vehicles do not track onto the shoulder area (on roads that have generally good horizontal alignment, it may be feasible to build only the insides of curves to full depth).
    * The existing and projected vehicle and heavy truck traffic is not considered excessive (e.g., heavy truck traffic less than 10 percent of total traffic).

    The thickness of pavement and base material will depend upon local conditions, and engineering judgment should be used. If there are short sections where the travel lanes must be reconstructed or widened, these areas should be constructed to normal full-depth standards.

    All of this wording clearly distinguishes the roadway surface from the shoulder surface.

  20. #20
    totally louche Bekologist's Avatar
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    john, you refer to the FHWA, same organization that i quote defining the shoulder as part of the roadway!

    "Evidence, anecdote and methodology all support planning for roadway bike traffic."

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    Al noisebeam's Avatar
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    Quote Originally Posted by Bekologist View Post
    john, you refer to the FHWA, same organization that i quote defining the shoulder as part of the roadway!
    Why not use the full definition per the link I provided from the FHWA?

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    totally louche Bekologist's Avatar
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    the one that says "shoulder- the portion of the roadway "?

    "Evidence, anecdote and methodology all support planning for roadway bike traffic."

  23. #23
    totally louche Bekologist's Avatar
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    so, some vehicular cyclists cannot admit the shoulder is part of the roadway but it can be improved for vehicular cycling. i see.
    "Evidence, anecdote and methodology all support planning for roadway bike traffic."

  24. #24
    Al noisebeam's Avatar
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    Is that what it says in full?

    here is another definition for ya:

    "Bicycle" means a device

  25. #25
    your nightmare gal chipcom's Avatar
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    Quote Originally Posted by Bekologist View Post
    Shoulder: a paved portion of the roadway to the right of the edge stripe designed to serve bicyclists
    incorrect - the shoulder is not part of the roadway, is not always paved and is not 'designed to serve bicyclists'.
    "Let us hope our weapons are never needed --but do not forget what the common people knew when they demanded the Bill of Rights: An armed citizenry is the first defense, the best defense, and the final defense against tyranny. If guns are outlawed, only the government will have guns. Only the police, the secret police, the military, the hired servants of our rulers. Only the government -- and a few outlaws. I intend to be among the outlaws" - Edward Abbey

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