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#REDIRECT [[Lane splitting]] |
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{{Mergeto|Lane splitting|Talk:Lane splitting#Proposed merge with .22Filtering forward.22|date=May 2009}} |
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'''Filtering forward''', or filtering, is a technique used by bicyclists and motorcyclists to pass a stopped or slow-moving lane of congested traffic by traveling in unused lane space. When the space used is between two lines of vehicles, this is also known as [[lane splitting]], but filtering can be accomplished by using space on the outside edge of same-direction traffic as well. There can be a significant saving of time by bypassing what otherwise would be obstructions.<ref>"Even in congested areas there is nearly always sufficient roadway width available for cyclists to lane share with stopped motorists, so cyclists ''filter'' forward through traffic jams." John Forester, '''Bicycle Transportation''', second edition, p. 73</ref><ref>"In some states, it is legal for a motorcycle to ride between lanes of traffic. This is known as ''splitting lanes''. Doing this when traffic is moving at normal speed is, of course, insane." Darwin Homstrom, '''The Complete Idiot's Guide to Motorcycles''', p 179</ref> |
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==Safety== |
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Filtering forward, in stopped or extremely slow traffic, requires very slow speed and awareness that in a [[door zone]], vehicle doors may unexpectedly open. Also, unexpected vehicle movements such as lane changes may occur with little warning. [[Bus]]es and [[tractor trailers]] require extreme care, as the cyclist may be nearly invisible to the drivers who may not expect someone to be filtering forward. To avoid a hook collision with a turning vehicle at an intersection after filtering forward to the intersection, cyclists are taught to either take a position directly in front of the stopped lead vehicle, or stay behind the lead vehicle. Cyclists should not stop directly at the passenger side of the lead vehicle, that being a [[Blind spot (automobile)|blind spot]].<ref>"Make sure instead that you are either well behind (so that car can't hit you), or well forward of the driver (so the driver can't miss seeing you)." John Forester, "Effective Cycling", 3rd Edition, p. 313</ref><ref>"Riding between rows of stopped or moving cars in the same lane can leave you vulnerable. A car could turn suddenly or change lanes, a door could open, or a hand could come out of a window." [http://dmv.ca.gov/pubs/dl655/mcycle_htm/abilities.htm#lanepositions The California Motorcycle Handbook]</ref><ref>"It's often safer to take the whole lane, or at least ride a little bit to the left, rather than hug the right curb. Here's why: Cars at intersections ahead of you can see you better if you're squarely in the road rather than on the extreme edge where you're easily overlooked. ..." Michael Bluejay, [http://www.bicyclesafe.com bicyclesafe.com]</ref> |
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==Etiquette== |
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Generally speaking, bicycling traffic safety and legal experts{{Who|date=May 2009}} consider it to be poor form to ''unnecessarily'' force other vehicles to pass oneself more than once in a short time span. As such, if one was just recently passed, it is considered poor form to filter forward to force the vehicles to pass again when traffic resumes moving at speed. Filtering forward is never required. If one is holding one's position in stopped traffic, one should [[take the lane]] to avoid being squeezed.<ref> "But be courteous. When it becomes safe to pass, give the driver a wave-by signal. If conditions are causing you to block traffic for more than a short time, the law requires you to pull to the side to let it by. ... On a road with two or more narrow lanes in your direction (like many city streets), you should ride in the middle of the right lane at all times." '''Complete Book of Road Cycling Skills''', Ed Pavelka and the editors of Bicycling Magazine, p. 74</ref><ref>"If the lane you're in isn't wide enough for cars to pass you safely, then you should be taking the whole lane anyway." Michael Bluejay, [http://www.bicyclesafe.com bicyclesafe.com] </ref> |
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==References== |
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{{reflist}} |
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[[Category:Motorcycling]] |
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[[Category:Motorcycle safety]] |
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[[Category:Cycling]] |
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[[Category:Cycling safety]] |
Revision as of 17:34, 21 June 2009
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