There has been a discussion on the Association for Pedestrian and Bicyclist Professionals (APBP) listserv for the last two weeks on what to do with an outside lane of 14 feet (without on-street parking), particularly when there is a seam between the asphalt pavement and the gutter pan. Several people encouraged the use of narrow, substandard bike lanes in an effort to get something on the street, rather than using sharrows in the wide lane, or just leaving the lane unmarked. I believe we need to be very careful to not create “bike lanes at any cost,” and to carefully consider the actual roadway conditions before specifying anything that does not meet or exceed standards. The diagrams below are from the NACTO Urban Bikeway Design Guide. The first shows a high quality bike lane adjacent to a curb; the second one shows sharrows rather than a bike lane where there is not sufficient roadways width.

bike lane adjacent to curb (right side): NACTO Urban Bikeway Design Guide

bike lane adjacent to curb (right side): NACTO Urban Bikeway Design Guide

shared lane markings adjacent to curb (left side); NACTO Urban Bikeway Design Guide

shared lane markings adjacent to curb (left side); NACTO Urban Bikeway Design Guide

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This is a follow-on to The I Street mess, and is another example of poor sharrow placement. Thank you, Elle, for reminding me to write about this. On I Street between 7th and 6th streets, there is a floating bike lane on the north side. A floating bike lane, also called a part-time bike lane, is […]

As part of a recent repaving project, now mostly complete, bike lanes were added to several streets in the downtown area, sometimes by converting three travel lanes to two, and sometimes just by narrowing the travel lanes. As an example, 9th Street (one-way southbound) and 10th Street (one-way northbound) were converted from three lanes to […]