Archive

Archive for the ‘Engineering/Facilities’ Category

CABO Support of Assembly Bill 819

January 11th, 2012 4 comments

In our letter to Assemblymember Wieckowski, we expressed opposition to Assembly Bill 819 unless amended. AB819 will be amended, and CABO is now in support.

AB 819 would have permitted local agencies to follow “innovative” bikeway design guidelines from sources other than the Caltrans Highway Design Manual, as currently mandated by law. The reasoning for our opposition is in the Assembly Transportation Committee analysis, quoted from our letter:

We are always open to innovative ideas, but a number of facility innovations that initially seem attractive also appear to present significant safety issues. The available research on these facilities is not always reliable, despite being cited in a guide produced by a private organization. Legitimizing these designs, in effect, by statute, rather than by technical review, could expose bicyclists to potentially dangerous facilities.

We agree, however, that Caltrans has been too conservative in its approach to bikeway design, and we would enthusiastically support an alternative approach that would provide an efficient process for experimenting with new designs. A Caltrans sanctioned experimental procedure would relieve local agencies of liability for nonstandard designs; it would enable experimentation with innovative and improved designs in a controlled and rigorous manner that would be consistent across jurisdictions; and it would provide reliable information for revision of the Highway Design Manual.

As indicated in the bill analysis, the Assembly Transportation Committee recommended that AB819 be amended to specifically require procedures allowing local agencies to request Caltrans to consider innovative and modified bikeway project designs, and the author and sponsor of the bill have agreed to these amendments. This addresses our concerns above, and so CABO is now in support of AB819.

CABO Opposition to AB819 Unless Amended

December 28th, 2011 Comments off

State Assembly Member Bob Wieckowski
State Capitol, Room 4162
Sacramento, CA 95814

SUBJECT: CABO opposition to AB 819 unless amended

Dear Assemblymember Wieckowski:

CABO is the association of California’s bicycle organizations. In our meeting last week with Ed Imai of the Assembly Transportation Committee, Dave Snyder of the California Bicycle Coalition, and Heather Falkenthal from your staff, we heard proposals that AB 819 permit local agencies to follow “innovative” bikeway design guidelines from sources other than the Caltrans Highway Design Manual, as currently mandated by law.

We are always open to innovative ideas, but a number of facility innovations that initially seem attractive also appear to present significant safety issues. The available research on these facilities is not always reliable, despite being cited in a guide produced by a private organization. Legitimizing these designs, in effect, by statute, rather than by technical review, could expose bicyclists to potentially dangerous facilities. Read more…

CABO Comments on Santa Ana River Trail

July 14th, 2010 4 comments

Below are comments from the California Association of Bicycling Organizations (CABO) on the RRTAC July 19 agenda items relating to the Santa Ana River Trail (SART):

1. First and foremost, we applaud the county’s efforts in reaching out to and working with the cycling community to come up with a SART detour well in advance of the widening of the 91 freeway.  Furthermore, we appreciate the county’s commitment to come with a long term solution that will most likely be more attractive than the original concept of a bikeway adjacent to the freeway.

2. When cyclist access to State Route 91 was severed due to conversion to a freeway in the 1970s, the section of the SART between Gypsum Canyon and Green River was constructed to provide an alternate transportational route for cyclists in accordance with Streets and Highways Code Section 888. Read more…

Ask the traffic engineer: How are speed limits set?

January 30th, 2010 5 comments

Most people think that motorists base their speeds on the speed limit. But while that may be true on freeways and other high speed highways, it’s not true on lower speed roads and streets. On lower speed roads and streets, motorists base their speeds not on the speed limit but on how the road feels.

If you’re typical, that doesn’t feel right to you. You may be thinking to yourself, doesn’t everyone pay attention to the speed limit like I do? Read more…

Categories: Engineering/Facilities Tags:

Signal Timing Issues

November 29th, 2009 1 comment

AB1581, which became law in 2008, requires all new or replaced traffic signals to respond to the presence of bicyclists. In addition, a requirement to develop signal timing guidance was also a part of AB1581. Both are incorporated in Policy Directive 09-06 from Caltrans.

The video clip below is of a cyclist making a left turn from a residential collector onto a six lane arterial. Although it’s a bit difficult to see in the video due to the wide angle lens, the cyclist’s position when the light turns green for traffic on the arterial is in the middle of the number two lane.  The cyclist reaches the bike lane on the other side at about 12 seconds after receiving the green.

Problems with Bike Lanes Striped Solid to the Intersection

November 8th, 2009 2 comments

Some of our friends in other states, as well as some local advocates have asked me about why bike lanes shouldn’t be striped solid at intersections. Here’s a picture of just such a facility in Florida, care of our friends at CommuteOrlando.com:

http://commuteorlando.com/wordpress/wp-content/uploads/2008/11/onramp1.jpg

Bike Lane Striped Solid at Intersection in Florida

Bike Lane Striped Solid at Intersection in Florida

Here’s a slide that gives a visual representation of the problems created by this bike lane treatment (and even a wide lane under Far To Right law guidance): http://www.cyclistview.com/uploadedphotos/Incompatible-Destination-Lanes-Draft.jpg

Incompatible-Destination-Lanes-Draft-600x450 Problems with Incompatible Destination Lanes

And here’s a detailed explanation in terms of Engineering and Planning and the Legal/Operational issues that result: Read more…

Bike Lanes and Motorist Right Turns

November 2nd, 2009 4 comments

Here’s an interesting article discussing how motorists should legally and safely make right turns in the presence of a bike lane (with no separate right turn only lane):  http://www.mercurynews.com/columns/ci_13669464

California law requires motorists to merge into a bike lane before turning right.  This is consistent with destination positioning traffic principles (right turning traffic turns from the rightmost part of the roadway) and thereby minimizes the chance of a “right hook” crash, where a right turning motorist turns across the path of a cyclist proceeding straight.

A few years ago, Oregon was dealing with conflicting laws – one that required motorists to make right turns from the edge of the roadway, and yet another required them to stay out of bike lanes.  The police proposed a California-style law which would require motorists to merge into the bike lane before turning.  That did not gain traction, and so the net result in Oregon is that motorists are required to turn across bike lanes when turning right.  http://bikeportland.org/2006/11/29/police-propose-bike-lane-law-change/

Oregon has been moving in the direction of installing ”bike boxes” to address the right hook problem.  Here is an animation that shows they don’t work as intended in all situations: http://www.commuteorlando.com/ontheroad/animations/bikebox/

As the Mercury News article illustrates, there is often confusion among motorists and cyclists about the California law regarding motorist right turns and bike lanes.  In my (Brian’s) view, part of the confusion is that motorists are being asked to occupy two lanes at once (the bike lane and part of the travel lane) – which runs counter to the concept we’ve all learned about only being in one lane at a time. But what other solution is there when bike lanes are striped to the right of lanes where motorists may turn right? Since there seems to be little desire to drop the bike lane stripe before intersections (even though the design standards allow it), the California law appears to be the best way to address the potential conflicts.

See also this post: http://www.cabobike.org/2009/11/08/problems-with-bike-lanes-striped-solid-to-the-intersection/

City of LA Draft Bicycle Master Plan – Engineering Policy Problems

October 7th, 2009 Comments off

The current draft of the City of Los Angeles Bicycle Master Plan (BMP) gives up on bicyclist use of the vast majority of the roads in the city and focuses on bikeways. In effect, this plan allows LA Dept. of Transportation (LADOT) to simply ignore the overwhelming majority of roadways as facilities that bicyclists will use and relieves them of any obligation to make the surface standards, intersection designs, and signal detection support bicycling on this majority of roadways. What follows is a re-write of the top level policies with existing policies augmented and a small number of important new goals and policies added. My changes are identified by [square brackets]. Read more…

Proposed Bikeway in Long Beach – Letter to CBAC

September 30th, 2009 Comments off

September 29, 2009

Ken McGuire, Secretary
California Bicycle Advisory Committee – MS1
P.O. Box 942874, Sacramento, CA-94274-0001

Subject: Proposal by City of Long Beach to Experiment with Separated/Protected Bikeway on the Left Side of Two One-Way Streets

by email to (email address deleted)

Dear Mr. McGuire:

The California Association of Bicycling Organizations (CABO) has reviewed the documents prepared by the City of Long Beach in support of a “protected bikeway” and notes that it fails to comply with the guidance and standards in the California Streets and Highways Code and Vehicle Code and in the Caltrans “Highway Design Manual”. In light of this noncompliance and the resulting potential problems of traffic safety, traffic operations, and the failure by the City to address the status of bicyclists as legitimate highway users, CABO hereby requests that CBAC adopt a finding that the Long Beach proposal fails to comply with these references and to forward this finding to the City of Long Beach. The reasons for this request are detailed below. Read more…

Proposed Bikeway in Long Beach – Letter to CTCDC

September 21st, 2009 Comments off

September 21, 2009

Devinder Singh, Secretary
California Traffic Control Devices Committee – MS36
P.O. Box 942874, Sacramento, CA-94274-0001

Subject: Item 09-21 on 9/24/09 CTCDC agenda
Request by the City of Long Beach for Permission to Experiment with Separated/Protected Bikeway on the Left Side of Two-Way Streets (Rte 9-112E)

by email to (address deleted)

Dear Mr. Singh:

The California Association of Bicycling Organizations (CABO) has reviewed the subject Request to Experiment (RTE) and notes that it fails to acknowledge previous trials in California of separated bikeways, particularly in the City of Davis and the City of Palo Alto, both of which were abandoned in favor of the standard bikeways now defined in the California Streets and Highways Code, the Caltrans Highway Design Manual, and the California Manual on Uniform Traffic Control Devices. In light of this previous negative experience with separated bikeways and the potential problems of traffic safety, traffic operations, and the status of bicyclists as legitimate highway users, CABO hereby requests that CTCDC reject the subject RTE or, if the CTCDC feels that the RTE may still have merit, refer it to the California Bicycle Advisory Committee for a recommendation on action by the CTCDC. The reasons for this request are detailed below. Read more…