Showing posts with label engineering. Show all posts
Showing posts with label engineering. Show all posts

Monday, March 14, 2011

Op-Ed: Shouldn’t bicycle planning and facility design experts at least ride bikes?

When I go around New Jersey talking about the importance of advocating for better bicycle amenities I’m often told by other bicyclists that they are frustrated, fed up and don’t bother even trying anymore. These bicyclists often complain that when they have petitioned for facilities in the past, if something was built, it was entirely unsuited to their needs. The typical complaint I hear is, “Why bother?!?! If something actually does get built, it will just get designed by someone who has obviously never even ridden a bike!” (I’ve honestly heard close to this exact complaint from several cyclists.)

While I can say with confidence that things are indeed changing for the better here in New Jersey, the unfortunate reality is that these bicyclists’ frustrations are well founded and their misgivings are all too often manifested in the concrete, asphalt, paint and steel of many of the facilities designed for bicycle use around the State. And while the professionals that plan and design these facilities may be very well intentioned and completely sold on the idea and wisdom of accommodating bicyclists, the reality remains that if the expert is not an experienced bicyclist themselves, they may continue to be blind to the potential hazards unintentionally incorporated into their designs and plans.

So I propose a theoretical test for anyone in charge of planning and/or designing bicycle facilities. This test would even be helpful for those in charge of awarding grant funds for bicycle facilities, as they would be more capable of critically evaluating the merits of a project and its usefulness for cyclists. I admittedly set the bar pretty high but that’s the point. If a candidate could pass this test then I would have unquestioning confidence with their professional opinions relative to proposed bicycle facilities. So beyond the candidate’s relative professional and academic achievements (degrees / experience in engineering, planning, etc.) the candidate would need to pass the following requirements to be a qualified bicycle planning and facility design expert. Those are:

Mandatory competences –

1. Theoretical and practical mastery of Smart Cycling as taught by the League of American Cyclists
A comprehensive, firsthand understanding of the hazards cyclists face while interacting with motor vehicle traffic would help prevent the design and construction of undesirable if not unsafe facilities. The candidate would have to demonstrate his/her proficiency with Smart Cycling in both a written format and while riding a bike. The on-bike proficiency must be demonstrated with ease and confidence under all but the most extreme traffic conditions. One does not need to be a League Certified Instructor to show competence in this requirement but it would indeed be a bonus. This requirement does not preclude the expert from approving facilities that do not attempt to exactly replicate Smart Cycling techniques in their profession practice.
2. Practical experience riding a bike for transportation purposes
A bicyclist riding for transportation will frequently seek a route that is the most direct. However, the bicyclist will often have to balance the need for a direct route verses the desire for a route that provides the best level of comfort and safety from motor vehicle traffic. Since most funding sources for bicycle facilities are often based on the premise that people will use their bicycles on these facilities to replace trips that would otherwise require the use of a motor vehicle (private and/or public), having firsthand experience bicycling for transportation would naturally help to make the best use of limited bicycle amenity funding. And by default, having used a bicycle for transportation the candidate would have a better understanding of the practical and proper placement of secure and situational appropriate bicycle parking. The candidate must show competence in using a bicycle for transportation over a minimum one-way distance of ten miles.
3. Experience riding a bicycle in rural, suburban and urban environments
Understanding that the needs of cyclists differ depending on the local environment is critical to providing site appropriate bicycle amenities. For example, barrier-protected bicycle lanes might be highly desirable to provide a comfortable bicycling environment on an urban arterial with heavy traffic volumes but would likely be totally inappropriate elsewhere. Understanding these needs would prevent the construction of inappropriate facilities and also help to wisely disseminate scarce bicycle amenity funding.
4. Experience and confidence riding a bicycle at speeds in excess of 25mph
Such experience would allow the expert to fully comprehend the needs of cyclists comfortable with operating a bicycle at higher speeds. Experience in operating a bicycle at such speeds also brings with it an understanding of a bicyclist’s strong desire to conserve hard earned momentum. Such an understanding could help prevent the design of slow speed facilities in downhill situations and/or the repeated close placement of stops signs on a bicycle facility in all but the most necessary circumstances.
5. Experience riding a bicycle at slow speeds (<12mph) in heavy traffic
Just as some casual bicyclists are completely unfamiliar with the needs of bicyclists who travel at high speeds (averaging >15mph), others who approach bicycling strictly as a high paced and sometimes competitive sport are often equally unaware of how bicycling at slower speeds can completely change the riding experience on a given stretch of road under otherwise identical traffic conditions. The candidate must understand that riding a bicycle at slow speeds can actually make bicycling more dangerous and more stressful, independent of the individual bicyclist’s experience and comfort in traffic. First, bicycling at slow speeds increases the total number motor vehicles that will overtake the slow bicyclist versus that of a fast bicyclist over a given distance. Second, on top of increasing the number of passing motor vehicles, those that do overtaking the slow bicyclist will do so at a higher relative speed, making each pass more stressful and potentially more dangerous. Third and finally, when bicycling at slower speeds it is much more difficult and stressful to take a lane when needed. By contrast the fast bicyclist can interact with traffic more easily, by being able to take a lane for a shorter period of time and with minimal interruption to the velocity of motor vehicle traffic. By understanding that riding a bicycle at slow speeds can actually be more stressful than riding fast, in certain instances, the expert would be better able to identify the needs of slow (often new) bicyclists while also considering the needs of fast bicyclists.
6. Experience riding a bicycle at night
Riding a bicycle at night is a unique experience that poses different challenges and potential dangers. Nighttime is also when a large percentage of bicycle crashes happen with motor vehicles with many of those resulting in fatal injuries to the bicyclist. Having experience riding at night would allow the expert to understand that a facility that may seem to work well during the day could pose significant hazards to bicyclists when used at night.

Elective Competences – (must show proficiency in at least two of the following)

1. Club / Competitive road bicycling
Many persons who readily identify themselves as bicyclists ride in bicycle clubs and/or ride bicycles competitively on the road. They also make up a large portion (if not a majority) of bicycle advocates. Having a firsthand understanding of their requirements would be a highly desirable so the expert could better satisfy their needs. Having ridden in a group and drafted other bicyclists is the critical part of this requirement.
2. Bicycle/Transit integration
Having firsthand experience using a bicycle with mass transit is critical to understanding the detailed needs of persons who wish to use a bicycle with mass transit. The candidate should be familiar with the both needs of bicyclists who use a bicycle just to access a transit station and those that also wish to take a bicycle with them on the transit vehicle. Better bicycle/transit integration has the potential to open up a whole host of possibilities for bicyclists while providing a new source of riders and revenue for transit agencies.
3. Riding with children
One could argue that this should be a mandatory requirement. Understanding the needs of child bicyclists is critical in providing proper bicycle accommodation on select facilities. Bicycle facilities where children are likely, or ones where bicyclists have must use a certain route to reach major, vacation or other family-friendly destinations must consider the needs of child bicyclists. A prime example of the later would be bicycle access to certain critical bridges. These facilities should be made comfortable for children as young as age 10 with adult supervision. This experience is also critical when working on Safe Routes to School bicycle projects.
4. Bicycle touring (preferably unsupported)
Bicycle tourists have many requirements uniquely different from that of most other bicyclists. They will often be totally unfamiliar with the area, roads and trails they are riding through, as they are likely visiting for the first and likely only time. As such bicycle tourist might not be aware of the safe scenic route that parallels a dangerous main highway. They can travel in excess of 100 miles in a single day and will have bicycles loaded with gear that can reach 100lbs or more. Bicycle tourists also require access to dinning and overnight accommodations and advanced knowledge of their precise locations. Again, having firsthand experience with bicycle touring would provide the candidate insights into the needs of a unique form of bicycling that is sure to grow as the popularity of bicycling increases overall.

Note – There is no requirement that the expert have experience with mountain biking. This is because mountain bikers themselves build most mountain biking amenities. There is often little need to bring in an outside expert to plan such facilities. And since these facilities rarely serve a transportation function, they are not usually eligible for transportation funding nor are they put through the same stringent vetting process as other bicycle facilities (yes, I am aware that some people do include sections of mountain bike trail on their commutes to and from work).

In closing, it should be noted that many bicycle planning experts in New Jersey already meet most if not all of the above requirements. Often, the frustrations bicyclists have with some bicycle amenities are due to compromises professional bicycle planning experts have to make with elected officials, other bureaucrats and members of the public others who don’t quite understand the needs of bicyclists. In some cases there is even total opposition to building bicycle accommodations that then force severe compromises to an excellent plan, if not complete cancellation of the amenity. It also cannot be forgotten that budget limitations can, and often greatly thwart otherwise excellent plans and ideas. This final issue is probably the greatest enemy of well thought-out bicycle plans and facility designs.

Still, government agencies, consultants and even the bicycle advocates themselves cannot petition, plan and design world class bicycle amenities until they first fully understand and comprehend the needs of bicyclists, which comes best from firsthand experience.

What do you think? Are there any other requirements that bicycle facility design and planning experts need to have to properly evaluate and design bicycle amenities?

Tuesday, April 27, 2010

Op-Ed: Roadway design speeds and modern cars

Speeding by drivers is probably the greatest single safety issue for those of us in the bike and pedestrian advocacy world. Yes, many will say that this is because that for 50 years we've design roads with only the safe, smooth and efficient flow of motor vehicle traffic in mind. There is no argument there. However, I think one factor that many people are forgetting are the cars themselves and how advances in automotive technology have enabled drivers to drive faster.

When many roadway design practices became the standards we use today, cars were much less capable machines. Think about it. Cars back in the 1960's and 1970's would start to shake and rattle at speeds above 60mph. By contrast today, the average car is a highly refined and incredibly well engineered machine capable of performance well beyond all but the most exotic sports cars from 30 or 40 years ago. They can accelerated faster, corner at higher g-forces, brake quicker all with a suspension and acoustic dampening that greatly trivializes speeds.

So my point is this. Roadway design speeds derived from standards established 40 years ago can no longer be valid with today's modern cars. A road that was designed to become uncomfortable for the driver at 45mph 40 years ago is likely not to seem uncomfortable until speeds exceed 65mph in a modern car today.

All the more reason to start engineering roadways for the actual speeds that transportation officials want people to drive.

Wednesday, February 3, 2010

Deadline tommorrow for comments on Scudder Falls Bridge

As report by John and our friends at the Bicycle Coalition of Greater Philadelphia:

Comments to the Delaware River Joint Toll Bridge Commission on this issue are due tomorrow, February 4th. Send the Commission an email letter stating your support for a bicycle/pedestrian pathway being included in the final design of the Bridge.

The Philadelphia Inquirer ran an indepth story and editorial today about the I-95 Scudder Falls Bridge and how a bicycle/pedestrian walkway that is being considered by the Bridge Commission may not get included because it is "prohibitively expensive." The Commission is rationalizing that 9 motor vehicle lanes (up from the current 4), 2 lanes for buses and 2 12-wide shoulders are necessary and a given that they will be built, but a bicycle/pedestrian path "is a cost issue" and may not be get included in the final design.

Obviously,we at the Bicycle Coalition of Greater Philadelphia don't agree and are pleased that the Inquirer Editorial Board is with us! The cost of a bicycle/pedestrian pathway is well below the threshold of what the feds consider "unreasonable", and there are other important positive benefits to having providing bicycle/pedestrian access that outweigh costs. Accommodating all users in transportation projects is federal and state policy, and one that this Commission should adhere to. The Commission should be designing a bridge with a 50-75 year life span for a future of more bicycling and walking and not pretend that it doesn't have a role to play in making the region more sustainable. As the Inquirer said today, "it would be an absurd planning decision to build a new bridge that made no room for cyclists and hikers to cross between two historic canal trails."

BCGP Final Comments (pdf)





View Philadelphia Regional Trails in a larger map

Monday, February 1, 2010

Interesting Statute of the Month - No Highway Off-ramps Near Schools

UPDATE! (2/2/10) - Zoe at the Tri-State Transportation Campaign commented below that this law is referred to as the "Terrell James' Law." I was curious about that and pulled up what I believe is the final bill language that created the statute below.

According to a NJDOT Press Release from February 7, 2006, the "Terrell James' Law" was (would be) named "in memory of an 8-year-old who was killed in a tragic 1997 accident that occurred on a Newark playground located between two highway ramps."
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I was doing some research again and I came across this interesting little tidbit. The law is only a little more than two years old but it is an interesting bit of legislation particularly for you folks concerned about Safe Routes to School issues. Also, if you follow the link below there is a bit more to this legislation than this one statute.
27:7-44.12 New entry or exit ramp, construction within 1,000 feet of school; prohibited; exceptions.

4. a. A new entry or exit ramp shall not be constructed as part of a highway project if a school is located or is being constructed within 1,000 feet of the proposed location of the entry or exit ramp, unless, during the planning and design of the project, the department determines that the construction is required and that there is no feasible or prudent alternative.

b.Prior to making the determination required pursuant to subsection a. of this section, the department shall, as part of its community outreach efforts to identify a preferred alternative design for the highway project, notify the local board of education in whose district the school is located or being constructed, and in the case of a school being constructed by the New Jersey Economic Development Authority, the authority, or in the case of a nonpublic school, the board thereof, the Department of Education and the members of the Legislature representing the district in which the school is located or being constructed, that the department is considering the construction of an entry or exit ramp within 1,000 feet of the school. The preferred alternative design for the highway project shall not be selected until the members of the Legislature notified pursuant to this subsection have been afforded the opportunity to submit comments to the department. If the department subsequently determines that the construction of the entry or exit ramp is required and that there is no feasible or prudent alternative, pedestrian safety issues shall be included as part of the environmental review undertaken by the department pursuant to State and federal laws, rules and regulations. When the public forum is held as part of the environmental review of the proposed highway project, the department shall present its plan for any entry or exit ramp and the safety measures, consistent with the recommendations of the study required pursuant to section 7 of this act, that are to be included in the highway project.

c.An entry or exit ramp for a highway shall not be reconstructed if a school is located or being constructed within 1,000 feet of the location of the ramp unless the department shall take steps to minimize the public safety hazards of the reconstructed ramp, consistent with the recommendations contained in the study required pursuant to section 7 of this act.

L.2007, c.308, s.4.

Tuesday, December 29, 2009

News 4 NY: NJ Highway With No Speed Limit Now Has 4

If you follow this blog or the NJ Bike/Ped News Digest you may be aware of the up-roar about the new section of NJ Rt 18 in New Brunswick not having any posted speed limits up until very recently. Tragically, it is felt by many that the lack of a posted speed limit may have had a cause in the pedestrian crash fatality of a New Brunswick boy. Even though the boy crossed against the signal, the speed of the driver that hit him was 68mph, way above the default speed limit of 50mph. It is believed by his family that the boy misjudged the speed of the car, never expecting it to be traveling so fast and that a proper, lower speed limit should have been installed when the road first opened.


(Video might be quirky. Playing with controls might be required to get it to play)

I don't know about you but I always thought that roads were engineered and built with a speed limit already in mind. Seems silly not to do so particularly when there are "at grade pedestrian crossings," even if these crossings are "protected" by a signal.