Posts Tagged ‘bicycling’

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John asked for a cycling post …

April 4, 2011

Lynne Kiesling

… but this is an econ post too. John Whitehead was kind to refer to our November lunch conversation in which we discovered a shared interest in cycling (to go along with our shared interests in economics, environmental economics, and beer). There are some ways that even individual recreational cycling reflects core economic ideas, particularly about specialization and comparative advantage (don’t even get me started on the economics and strategy of professional cycling …).

Take the duration of activity, for example. From exercise physiology we learn that we have differentiated muscle fibers, categorized roughly into fast twitch and slow twitch. Fast twitch are the muscle fibers that engage for quick bursts, working with the anaerobic energy system in sprints and other short but intense activities. Slow twitch are the muscle fibers that enable you to work aerobically, over long distances and durations. Different people possess these types of muscle fibers in different proportions (think of that as your initial endowment), and you can develop more of one or the other at the margin, but given your initial endowment, you are going to have a predisposition toward one or the other. Just as in talking about trade and exchange, this predisposition has a lot to do with comparative advantage.

More after the cut … Read the rest of this entry ?

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The economics of bike lanes

March 18, 2011

Lynne Kiesling

As a celebration of impending spring, I give you economics journalist Olaf Storbeck’s sound analysis of the economics of bike lanes. His prompt for writing was a rant from John Cassidy in the New Yorker about the tradeoff between bike lanes and “free” street parking spaces. Storbeck’s analysis is thorough, and goes beyond the oft-forgotten “street parking isn’t free” (citing the oft-forgotten work of Donald Shoup on that subject) to mention the network effects of having a more interconnected set of bike lanes (with a shout out to my very interesting colleague Mathias Doepke in the process!)

Storbeck accurately, I think, pinpoints the fundamental question: “Should the government promote cycling?” Here we probably disagree somewhat; he argues that it should, based on the health and environmental effects of substituting into cycling and out of driving. I am more concerned about the top-down imposition of a particular value judgment and the paternalism inherent in such a position than he is.

I don’t take the same normative position as he does, but I do favor making bike lanes explicit on high-traffic streets from a more Coasean perspective — bike lanes define property rights more clearly, and contribute to more coordinated and more peaceful shared use of a common-pool resource. For me that’s the primary economic reason to take the normative position in favor of bike lanes. More clearly defining property rights will reduce the costs associated with the decision to bicycle, so at the margin it will lead to the desirable outcomes he wants.

I am really looking forward to getting outside on my bike. For Christmas this year the KP Spouse got me a SRAM Force groupset of components for my bike (don’t worry about what that is if you aren’t a cyclist, it’s spiffy gears and shifters etc.), and I’ll be taking them on their maiden voyage next week in North Carolina, where we’ll be attending a “spring training” bike camp to work on mountains and hill climbing.

Happy cycling!

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Cargo bikes in Copenhagen

September 23, 2010

Michael Giberson

I could have used a Copenhagen cargo bike (see video at linked post) last year when I occasionally carried my son’s baritone horn up to school for him. Come to think of it, I could probably still make use of a cargo bike.  Better yet, my son could make use of a cargo bike!

Want more cargo biking? Here is a link to the “cargo bike culture” posts at Copenhagen Cycle Chic. Or check out the images and video at the website of Larry vs. Harry (designers/manufactures of the Bullitt cargobike).

Cargo bike picture

A photo from the Larry vs. Harry archive

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Roads and paths as common-pool resources, and the problem of governing them

October 19, 2009

Lynne Kiesling

Yesterday at Reason’s Hit & Run Tim Cavanaugh wrote about something that I’ve been thinking about for a long time: the institutions we use for governing the shared use of paths between cyclists and motorists on roads, and among cyclists, walkers, runners, rollerbladers, etc. on multi-use paths. Tim’s starting point was Christopher Beam’s article in Slate on the same topic. Beam frames the question as “How do we get bikers to obey traffic laws?”, and classifies cyclists into two categories: vehicularists and facilitators:

What to do? Today’s cycling activists generally split into two groups: “vehicularists” and “facilitators.” Proponents of “vehicular cycling” believe bikes should act as cars: occupy full lanes, stop at red lights, use a hand signal at least 100 feet ahead of a turn. That’s the best way to make cars—and policymakers—aware of bicycles and to respect them as equals on the road. When it comes to making roads safe for bikes, vehicularists tend to favor training, education (most cities offer bike safety classes), and enforcement. Cyclists should not grouse about moving violations, the vehicularists argue. It is a sign that they’re being treated as equals.

Facilitators, meanwhile, say we should change the laws and the environment to recognize the innate differences between bikes and cars. That means special facilities like bike lanes, bike paths (elevated trails separate from the road), and even Copenhagen-style traffic lights for bikes. It would also mean changing car-centric laws that don’t make sense for bikes, like the rule that says you need to come to a complete stop at a stop sign.

I agree with Tim that the best response is to be part vehicularist and part facilitator; I figure my split is about 80/20. When I am on my bike I am a vehicle. I think that when I am on my bike I am dangerous to pedestrians and they are dangerous to me because their behavior can be unpredictable, and thus I should be on the road and not on the sidewalk. On the road I ride single file with other cyclists (I generally don’t do group rides), I stop at red lights, I don’t weave in and out of traffic, and I use hand signals. I do not, though, stop at stop signs unless there are other vehicles approaching the intersection; as both Tim and Christopher note, keeping your inertia up is really important on the bike, and stopping at stop signs when there aren’t any other vehicles present is an unnecessary reduction in my inertia that does nothing to improve safety. In other words, I adhere to the Idaho stop law, under which Idaho cyclists are allowed by law to treat stop signs as yield signs in the absence of other vehicles. I am a “facilitator” to the extent that I believe we should amend existing traffic laws to enact the Idaho stop law more widely. In general, I behave the same way, and for the same practical and philosophical (i.e., anarchist) reasons as squarooticus voiced in his/her comment on Tim’s post:

Anyone who advocates that bikes (or all cars!) obey every traffic law has bought into the modern statist notion that laws are ends in themselves. The rest of us (especially the anarchists, who hate unnatural laws) understand that laws are a means to an end. In this case, that end is safety.

How many of you come to complete stops in a car when you get to an intersection in which you have 100% visibility in all directions and there is nothing coming? I certainly don’t, and I don’t know many people who do.

When I’m riding my bike, have perfect visibility, and am not in a position to surprise a driver, I will slow down at a stop sign or light, look in all directions, and proceed through if it is safe to so. I would actually be in favor of car drivers doing this as well, eliminating the need for most traffic control devices, if I felt that most car drivers were capable of doing so safely. Since half of them are yakking on a cellphone wedged between their shoulder and ear, smoking a cigarette with one hand, holding a coffee with the other, and driving with the left knee while the right foot actuates the velocitator and deceleratrix, it seems pretty clear that this isn’t the case.

SAFETY. That’s the point. Not blindly following rules for the sake of following rules. Follow the rules during situations in which predictability is integral to safety, but bend the rules when safety would not be an issue.

Similarly, when I am on the bike path in Lincoln Park I am constantly saying “on your left!” and making sure that the other users of the path are aware of my presence, since as a cyclist I am the fastest and most dangerous type of user on the path. But I avoid paths whenever possible, because the way I ride is more incompatible with paths than it is with roads.

I do find the hostility between motorists and cyclists disturbing, and the anger and attitude on both parts in the comments to Tim’s post show some examples of why it’s so disturbing. But it’s not as one-sided as Beam’s “how do we get cyclists to obey traffic laws?” headline suggests. Not surprisingly, I think of the cyclist’s dilemma on both roads and paths as a problem of common-pool resource governance similar to those that Elinor Ostrom and other new institutional economists study.

Let’s start with the path. This, for example, is my path, downtown near Ohio Street beach, although I spend most of my time on it up north, between Belmont and Foster, where I run. Note the ease of access and many multiple uses of the scarce common-pool resource (and if you look carefully you’ll see a swimmer there too!):

chicago_lakefront_path_dburden_large

Moreover, when the path is congested, these uses can conflict. In particular, rollerblading and cycling conflict the most, because a rollerblader’s leg stroke is wide and his/her speed can vary widely, while a cyclist takes up less width, but is moving quickly. The potential for a serious accident is high. The institutions used to govern our shared use of this resource are mostly informal and grounded in common sense — cyclists are expected to have a bell and/or say “on your left”, pedestrians are expected to look both ways and yield to cyclists and rollerbladers before crossing the path, and runners are expected to run on the gravel path where there is one (and runners who love their knees are going to benefit from doing that anyway!). Path users generally evolve patterns that serve as a compromise with the other users; for example, cyclists doing fast (>16m.p.h.) training rides know not to expect to do so after 10 AM on summer weekends, and rollerbladers learn that they should coast when they hear “on your left”. It’s not perfect, and things happen that inject noise into the system (such as having a toddler dart out unexpectedly from a beach onto the path, or a volleyball bouncing in front of you, or a cyclist or rollerblader with earphones in when they should not be), but in general, the informal institutions that have grown on top of the formal legal requirement that it be a multi-use path keep things both safe and civil.

The economic logic of governing the commons also applies to the road as a common-pool resource shared by motorists and cyclists. It’s really only when there is congestion of traffic among the two types of users that their use rights come into conflict, although in some situations congestion kicks in early — for example, some of the smaller “B” roads I’ve been on in England would hit congestion with one car and one bike and a curve in the road! The institutions used to govern the uses of the shared resource here are a mix of formal (traffic laws) and informal (courtesy).

More so on the road than on the path, the formal institutions and the informal institutions interact. Here’s an example of what I mean: cyclists weave in and out of traffic and generally ignore stop lights, which angers motorists and makes them more disinclined to treat cyclists with courtesy, which angers cyclists and makes them more disinclined to obey traffic laws or to treat motorists with courtesy, etc. etc. Or let’s start from the other side: some motorists don’t like having to share the road with cyclists, even those who ride safely and generally obey traffic laws, so they don’t treat cyclists with courtesy (drive too close to them, honk at them, etc.), which angers cyclists and makes them more disinclined to obey traffic laws or to treat motorists with courtesy, which reinforces the motorists’ preconceptions and angers them further, etc. etc.

My view of the road as a common-pool resource governed by a combination of formal and informal institutions is why I’m 80% vehicularist/20% facilitator. The stop sign law for cyclists is excessively costly without increasing safety for either cyclists or motorists, and its stringency induces cyclists to ignore that law, which erodes the respect for bike laws more generally. However, it’s also true that most motorists don’t understand the physics and the dynamics of cycling. That’s why my general recommendation about formal governance in this case is two-pronged:

  1. Implement the Idaho stop law.
  2. Require all drivers to undergo bicycle training and pass a cycling test in order to get a driver’s license.

Unfortunately, I don’t have a good answer for cyclists weaving through traffic or people in cars throwing things at cyclists other than more strict enforcement and penalties …

As for the issue of separate bike lanes, I’m not sure that the costs outweigh the benefits in all cases, so in the spirit of Ostrom’s polycentric and organic institutions, I would recommend continuing to evaluate them on a local basis. If the combination of amending the traffic laws and taking measures that will increase the likelihood of courtesy makes both cyclists and motorists happier and safer without the expense, that would be a good thing.

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Is bicycling “bad to the bone”?

August 28, 2009

Michael Giberson

Research studying competitive cyclists suggests that cycling can reduce bone density.

… most recreational cyclists probably don’t need to worry too much about their bones. “The studies to date have looked primarily at racers,” [researcher Aaron] Smathers says. “That’s a very specialized demographic. These guys train for hours at a very high intensity. They sweat a lot. They never go for runs. They don’t usually do much weight-lifting,” to avoid adding bulk. “They’re strange.”

I never “train for hours at a very high intensity,” so I’m probably safe.

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My own private Idaho Stop Law

August 6, 2009

Michael Giberson

Danny Morris at Common Tragedies explains and advocates for wider adoption of the Idaho Stop Law:

The law, named after the clever state that instituted it in 1982, says that cyclists may treat stop signs as yield signs (they must stop for those w/ the right of way, but can proceed w/o stopping if the coast is clear) and may treat stop lights as stop signs (they must stop, but can proceed when the coast is clear, even if the light is still red).

Morris links to a report at The Athletes Lawyer that said:

Meanwhile, in the past 27 years, Idaho motorists and police have grown to accept the legislation as sensible public policy, said Jason Meggs, a UC-Berkeley researcher who spent last summer crunching years of traffic data, conducting interviews and observing cyclist behavior in the state. Boise, home to Idaho’s biggest bike population, “has actually become safer for bicyclists than other cities which don’t have the law,” Meggs said.”

I guess I’ve been operating under my own private Idaho Stop Law, the description fits my usual riding habits pretty well.

Casual observation suggests the Idaho Stop is widely practiced by cyclists.  (See, for example, this article from The Oregonian where the author came up with the same Gus Van Sant movie reference that I’m using.) Perhaps one reason that the law improves safety is that it helps coordinate expectations of cyclists and motor vehicle operators.

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About “something mostly enjoyable that also performs a function”

May 29, 2009

Michael Giberson

From David Byrne’s review in the New York Times of Jeff Mapes book, Pedaling Revolution:

[Mapes] argues that cycling promotion can raise society’s level of general fitness, since people exercise more when it seems less like exercise and more like something mostly enjoyable that also performs a function, like getting to work. “Bike and walking advocates,” he writes, “have been rebranding their cause as ‘active transportation,’ which manages to come off as nonthreatening to your average couch-bound American while carrying a nice touch of gravitas as well.”

Yes I would describe my bike commuting as “something mostly enjoyable that also performs a function.” I wouldn’t count myself as a “bike and walking advocate,” per se; I’m happy to let other people do their own things.

But I like it, and if your circumstances permit, you should discover whether you like it, too.

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Bento Box on the Bike: Not What You Think

June 5, 2006

Lynne Kiesling

Here’s an amusing cultural amalgamation: I am getting ready for triathlon season, and so am thumbing through the Tri Zone catalog that just appeared in my mailbox. When you do tris that are Olympic or longer, you want energy and hydration close to hand while you’re on the bike. Here’s a solution: the Bento Box! Gu and energy bars instead of sushi.

I just had to laugh at the economic anthropology inherent in that marketing choice. Grant McCracken, call your office!

Given that I am doing two sprints this summer (Reebok Women’s in Naperville, 25 June, and Accenture Chicago in Chicago, 27 August), I don’t need a Bento Box to get me through the race. But I’ll keep it in mind for maybe doing a full Olympic in Chicago in 2007 …

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