Misleading poster redux

seattle poster

Seattle poster

The panel at the right is from a poster called The Commuter Toolkit put out by International Sustainable Solutions for an organization called the International Sustainability Institute. You may view it full size by clicking it or view the full poster. This poster shows a scene in downtown, Seattle, Washington, USA and the poster bears the names of various sponsors in the Seattle area.

The comparisons of space used by different travel modes in the poster are misleading. They show the space which people occupy standing still in posed photos, not the space which each mode of transportation actually uses. Cars would not be spaced so closely if in motion, and they also take space to park. Nor would buses be spaced so closely, and they also use bus stops and bus garages. The bicyclists are standing over their bicycles, not riding, etc. Neither does the poster address the throughput and travel times for the different modes or the suitability of different modes for different trips of different distances. I addressed an earlier example of a similar poster on this blog but there’s a twist to this particular version: the bicyclists are shown riding down the middle of Second Avenue in Seattle, but look over to the right side of the picture: that’s a bike lane — also with cars in it in the car picture. Similarly for the bus-only lane at the left side of the photos. No train runs on this street!

The bike lane was more recently replaced by a two-way separated bikeway, into which speed humps are being installed because the bikeway cannot safely support normal downhill bicycle travel speeds on this sloping street, though that’s another story.

The location, in case anyone wants to take a closer look.

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Lane Control on Lexington Street

Here’s a video showing a bicycle ride on a constant mile-long upslope, at speeds of 10 to 12 miles per hour (16 to 20 km/h), on a suburban 4-lane speedway with narrow lanes and no shoulders, the most challenging street in the community where I live. Motor taffic was very light, and auite fast. Points made:

  • Lane control is not about riding fast: it is about controlling one’s space.
  • Lane control is necessary so motorists will overtake at a safe lateral distance on a street with a narrow right-hand lane.
  • By requiring motorists to make full lane change, lane control lets a cyclist with a rear-view mirror confirm well in advance that motorists will overtake with a safe lateral distance.
  • With the light traffic on a multi-lane street, a slow bicyclist does not cause any significant delay to motorists.
  • Most motorists are cooperative.
  • A few motorists are abusive — even though they can easily overtake in the next lane —  but they too overtake safely.
  • American traffic law supports lane control.

Lane Control on Lexington Street from John Allen on Vimeo.

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Bruce Epperson’s observations on transportation funding

Bicycle historian Bruce Epperson has written a paper examining trends in transportation funding in the USA from the 1960s to the present. It makes interesting reading. With his permission, I have made the paper available in PDF format on this Web site:

http://john-s-allen.com/pdfs/epperson-funding.pdf

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Wow, it’s a laser!

A post on the Grind online news site heralds the Blaze, a  laser bicycle light gimmick — not the first to be reviewed on this blog The Blaze hits the market with some rather clever — and deceptive — advertising including the photo below.

The Blaze shown to best advantage

The Blaze shown to best advantage

 

The camera angle in the posed photo is chosen very carefully to create a specular reflection off the wet pavement. That makes the projected bicycle image look much brighter in this night photo. It will be totally invisible in daylight. Cost is 125 British pounds, that’s about $187 in US dollars and there are lights with similar performance (other than the laser feature) for $70. See http://www.sheldonbrown.com/LED-headlights.html

The idea of the light also appears to be to warn motorists who might make hook turns. There is a better way to avoid hook turns: don’t overtake on the curb side of a motor vehicle. And in any case, the bicycle image which the laser casts on the street, if visible at all, isn’t far enough ahead of the bicyclist to be in the field of view of many drivers in time to avoid turning — particularly not the drivers of long vehicles which are involved in the largest number of hook-turn fatal collisions.

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Helmet disparagement and ethics

To quote the late, great Dutch traffic engineer Hans Monderman, “Never treat anyone in the public sphere like an idiot. If you treat him like an idiot, he will act like an idiot.”

Providing helmets is difficult when bicycles are rented from unstaffed kiosks. Bike-“sharing” (actually rental) has unleashed this problem, in the interest of increasing bicycle mode share, and has been accompanied by a flurry of pronouncements disparaging not only mandatory helmet laws, but also helmet use.

Purportedly, according to several reports which have appeared in the media, wearing a helmet actually decreases safety. The quintessential article appeared in the New York Times. You see, it works like this: helmets make bicycling appear hazardous. If we don’t convey that impression, more people will ride bicycles, and then there will be a safety-in-numbers effect, so, what, me worry, all will get better.

In my opinion, bicyclists’ helmet use deserves to be a matter of personal choice rather than law. That is, I would like to rely on individuals’ own intelligence and judgment, and on helmet promotion, rather than to treat people as idiots, on the one hand disparaging helmet use in the interest of some Greater Good which is supposed to accrue to society at large, or on the other, passing a law which is supposed to force helmet use, but goes unenforced and raises an issue of presumption of negligence as in, “the driver ran a stop sign, but you weren’t wearing a helmet, and so you were breaking the law and can’t collect on the driver’s insurance.”

I personally have had 3 serious impacts between a helmet and pavement the past 37 years since I started wearing one. One incident was initiated by a drunk driver. One was a collision with a fallen branch of a tree, hanging over the curb and which got caught in my front wheel; the third, an encounter with an pothole at 8 mph. Note that two of the three were single-bike crashes. No bicycle-facilities nirvana is going to prevent these. Actually, crowded conditions on separate bicycle facilities make bike-bike and single-bike crashes more likely.

Am I to believe that the health benefits of cycling would be far greater than the injuries I would have suffered if not wearing the helmet, or for that matter, would I still be cycling, or in full possession of my faculties, or even alive?

I’m not alone in having crash stories, or in saying that I wouldn’t ride if I couldn’t wear a helmet; helmet use became almost universal in recreational bicycle clubs within a few years after effective helmets became available in the mid-1970s, and bicycle clubs thrived. Helmets cut both ways, both encouraging and discouraging bicycling. Debris, potholes, riding in close quarters with other bicyclists of widely varying skill, all lead to crashes, and I challenge anyone here to explain how increasing the number of bicyclists or building separate facilities improves that situation except perhaps if the facilities become so crowded that bicyclists are reduced nearly to walking speed.

My choice to wear a helmet has nothing to do with the Greater Good, one way or the other. I’ve made my choice and it has worked very well for me.

Helmet disparagement is, to put it simply, deception. By way of comparison, recruits into the military are not deceived about the risk they assume, but they may take those risks on for patriotic and/or career reasons (or back in my day, be drafted). Special benefits, compensation and medical care if injured are part of the deal. But bicycling isn’t the military. I ride on my own initiative, for transportation and recreation.

User agreements for bike share customers (typically, several screens long on the rental kiosk, but where the agreement can be signed without reading it) relieve the renter of responsibility. I’d suggest that one way to promote helmet use would be to offer insurance if the customer wears a helmet. This, unlike a mandatory helmet law, would be a positive incentive.

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M. Kary on the epidemiological approach to traffic-safety research

M. Kary has released the manuscript of his paper on the unsuitability of the epidemiological approach in studying traffic safety.

Unsuitability of the Epidemiological Approach to Bicycle Transportation Injuries and Traffic Engineering Problems
Author: M Kary
Injury Prevention 2015;21:73-76, Published Online First 14 August 2014

First paragraph of the abstract:

Bicyclists and transportation professionals would do better to decline advice drawn from characteristically epidemiological studies. The faults of epidemiology are both accidental (unpreparedness for the task) and essential (unsuitability of the methods). Characteristically epidemiological methods are known to be error-prone, and when applied to bicycle transportation suffer from diversion bias, inappropriately broad-brush categorisations, a focus on undifferentiated risk rather than on danger, a bias towards unsafe behaviour, and an overly narrow perspective. To the extent that there is a role for characteristically epidemiological methods, it should be the same as anywhere
else: as a preliminary or adjunct to the scientific method, for which there is no
substitute.

You may read the entire manuscript here:

Kary2014UnsuitabilityOfEpid.pdf

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Tesla Thermal Troubles: the Li-ion in Winter

My friend Brad Meyer, who lives in the next town over from me in Massachusetts, has owned a Tesla Model S car for more than a year. His observations raise some serious questions about the advantages of an electric car, particularly in winter — and about the pricing of electricity in Massachusetts.

Electric power generation is most efficient (and least expensive) if power demand remains nearly constant; off-peak pricing can work well both for the power company and customers, by shifting time-insensitive tasks such as doing laundry and charging electric-car batteries into hours when electricity demand is otherwise low. California, where the Tesla is made, has an advantageous off-peak pricing scheme for electricity. Massachusetts has only a weak version of such a scheme. There are also serious cold-weather performance issues with the Tesla due to the slowing of the chemical reaction in its lithium-ion battery. Brad kept track of his car’s electricity use, and writes:

The Tesla’s info-center miles-remaining is based on an average of 293 watt-hours per mile. My measurement was from a winter period, and was calculated from a measurement of average watt-hours/mile over several winter months. My winter average was about 425. These numbers are not immediately available to me so I’m trying to remember them; they’re approximately correct.

Most of the time, I kept the car in a garage that is heated to about 38 degrees Fahrenheit in the winter, but there were times when, as an experiment, I left it out when the morning reading was about +5 F. When the car is turned on in those conditions, it begins to heat both the cabin and the batteries. There is very limited forward power available and regenerative braking is totally disabled, so you get no energy return at all to the batteries from slowing down and no braking effect except what you supply with the pedal for the first couple of miles.

I applied for a time-dependent electricity rate and saw that one part of the bill went from about 7.8 cents all the time to 3.9 at night and 9.6 during the day. But wait! That’s just the transmission charge. The generation charge, which should clearly change during the night when the machinery is just ticking along, is 15.9 cents all the time. This is the big fast one that we get from our power company (Eversource). So I’m charging my car at 19.8 cents per kilowatt-hour and I’m using 425 watt-hours/mile, which costs me 425 x 19.8/1000 = 8.4 cents per mile. You can run a Toyota Corolla for about that much in gasoline, or maybe a bit less.

The summer consumption of about 315 watt-hours per mile gives an electricity expense of around 6.2 cents a mile, which is better than most gasoline-engine cars but not dramatically so.

Don’t believe anyone who tells you he drives a Tesla for environmental reasons. That’s not what the car is about.

What is the Tesla about, then? As Brad demonstrated to me, it has astonishing acceleration, and so it counts as the first mass-production electric car with an appeal to car buffs. (Brad is one.) The acceleration is very strong at low speeds, unlike with an internal-combustion engine, which produces the most power near the high end of its rpm range. Brad tells me, though, that the Tesla’s power drops off with sustained acceleration, as protection cuts in to prevent the motors from overheating. And then there are the winter problems.

What might be done to improve the winter performance? Consider that a gasoline engine burns fuel on the spot to generate power, but only about 1/4 of the energy in the fuel is converted into mechanical energy to move the car. The other 3/4 becomes waste heat. About half of that is carried away in the exhaust, but the other half which the coolant carries away is ample to heat the passenger compartment. Though a fossil-fuel-burning or nuclear power plant is generally more efficient than a gasoline engine in a car, the waste heat is lost at the power plant. The electric car’s heater steals battery capacity, reducing the car’s range on a charge and increasing the cost per mile.

Electricity generation using hydro-, wind or solar power avoids the pollution, health, safety and environmental issues with fossil-fuel and nuclear power plants, but does not reduce the power demand to heat an electric car, or make the car run better in winter.

I’d think that it would make sense for an electric car to have the battery  well-insulated against cold, and with a small electric heater. So, in the best-case scenario with today’s battery technology, an electric car could start up smartly if it had been charging, but would need a warm-up period if it had not been. The battery heater could keep the battery warm while the car is charging overnight, or be activated remotely or on a timer if the car is parked where it can’t be charged. Warming the battery  in advance would avoid experiences like Brad’s when leaving an underground parking garage after attending a concert one evening: the car would slowly advance one foot up the exit ramp, then stop to gather its forces, then one more foot…

One advantage of an electric car, especially if the battery is already warm, is that the heater for the passenger compartment can be turned on immediately — or even in advance without starting the motor — rather than with a delay as with the heater in an internal-combustion-powered car.

The battery also needs to be actively cooled during use: lithium-ion batteries can overheat. The Tesla’s battery is liquid-cooled, and there is a battery heater, but evidently it lacks smart controls.

It is likely that technology will improve, but for now, the Tesla unfortunately cannot match the start-up-and go winter performance of a vehicle with an internal-combustion engine.  Economy and range also suffer in cold weather. The same is likely true of other all-electric vehicles.

There are other Web pages discussing cold-weather performance of electric cars — search on <electric car battery winter> to find them. One specifically about the Tesla is here.

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Streetsblog’s Angie Schmitt seeks to purge engineers

I just ran across a post from March 2015 by Angie Schmitt for Streetblog:

The title is “Engineering Establishment Sets Out to Purge Deviant Bikeway Designs”

I quote:

The NCUTCD consists mostly of older engineers from state DOTs. In recent years, its bikeway design orthodoxy has been challenged by a new wave of engineers looking to implement treatments that the American street design establishment has frowned upon, despite a proven track record improving the safety and comfort of bicycling. Most notably, the National Association of City Transportation Officials has released guidance on the design of protected bike lanes that the MUTCD lacks.

NACTO’s guidance is gaining adherents. Dozens of cities have implemented protected bike lanes in the past few years. The Federal Highway Administration endorsed the guide in 2013.

The NACTO Guide is formatted to appear to be an actual design guide to a lay person, but does not serve as one for an engineer who is faced with the actual task of designing anything. That is one of the problems which the NCUTCD task force is attempting to address. The NACTO Guide has stirred up a lot of interest among the general public, politicians and advocates of increased bicycle use, but it does not offer a decision tree, or  specifications, or safety cautions sufficient to guide the design of safe and practical bikeways. I’ve addressed that here.

As to the “proven track record,” search on “Lusk” in this blog for some reviews of studies which purport to overturn the results of decades of research showing an increase in crash risks at driveways and cross streets with sidewalk or sidewalk-like routing of bicycles, and an overall increase in crashes due to this “protection.”

Schmitt’s use of the terms  “purge” and “deviant” — to describe the deliberations of an engineering task force — play on the image of totalitarian states’ placing people who reject party line before a firing squad, and speaks for itself.

 

 

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A review of the film Bikes vs. Cars

I knew I’d have a problem with the film just based on the the title.

There can be animosity between people on bikes and in cars, but bikes and cars are machines, which have no feelings and generally don’t get into trouble unless there is a person is behind the steering wheel or the handlebars. The title “Bikes vs. Cars” reminds me of a frequent complaint of bicyclists who have had incidents in traffic, “the car didn’t see me.”   The title and that statement both reflect a fear-based mental block which has led to the inability to conceive of the car as a machine under control of a human, with whom it is possible to interact, and so, much more often, to avoid incidents…

Enough. There’s more to say. My facebook friend Kelley Howell has posted a detailed review, which follows here:

***************

Why I think the film, Bikes Vs. Cars, is a waste of money:

by Kelley Howell

It was a scattered, gawky film filled with untenable contradictions. Some thoughts:

The film switched back and forth between a desire to own the streets and use them as if they belonged to bicyclists who have a right to drive on them, free of cars, but then it dropped its pretense to militancy asking for small slivers of space on the edge, as if if that edge were some Magic Kingdom of safety. On one hand, the people in the film seem to be demanding a right to take the entire road and get the hated cars off it. On the other hand, it’s all about scampering out of the way, deferring to a dominant majority no one knows how to handle, let alone challenge.

As an example, there was a line in the film which went something like this: “At 1 AM, during the quiet of Carmeggedon in LA. I sneaked on to the 405 and rode my bike on this massive highway. It was beautiful. I owned that feat of human engineering. For the first time, I felt it was a marvel of human engineering that was made for me.”

Then they switch to Sao Paulo in Brazil, to capture the happy reactions of bicyclists who learned that the city is laying down 100s of kilometers of too narrow bike lanes in a very congested city where few people appear to follow traffic law to begin with. I was hard pressed to imagine all these scrappy motorists would respect the painted lines of a 4 foot wide gutter bike lane.

Which is it: do you want to drive a bike on that feat of human engineering, the 405, or a 4 foot bike lane with cars passing too close, driving out into your path, and right- and left-hooking you constantly? How is that demanding your rights? How is it safe? Accepting a scrap of asphalt, some of it carved out of a gutter built for sewer water? After all that rhetoric of wanting access to feats of human engineering, how is that you want to operate in a gutter bike lane?

The film trades in the imagery of the bicyclist, rolling free, free of motorists, free of the burden of a body on pavement, free because it can dodge the confines of hated “traffic”. The magic of the bicycle is its thrift, its speed, and its nimble ability to slip through crevices of urban congestion. It is at once traffic and the supposed escape from it.

But this is reminiscent of the propaganda that dominates the most pedestrian – har! – of auto advertisements where cars mean freedom, an open road, an endless horizon. This imagery in commercials is a stark counterpoint to the reality of miles of congested freeway, gridlock, and, well, to borrow a phrase, the hell that is other motorists at rush hour.

This trope — the bicycle as freedom, magically evading being captured in traffic — is present in an amusing fantasy entertained in the film: pulling 20% of all motorists off the Los Angeles roads and reinserting them with their derrieres planted in bike saddles. Apparently they will accomplish their 14.7 mile commute on their Dutchie or Cruiser, pedaling along at 10 mph?

Going by LA county numbers, 20% of the ~4.5 million motoring commuters is 900,000 bicyclists. Even if their commute where far shorter – say a manageable 5 miles at 10 mph — that’s a lot of bicyclists who get to share those four foot wide gutter bike lanes. Good luck with that!

Then, there was a main protagonist, name escapes, in Brazil. She says, to paraphrase, “What I want is some respect for human cooperation.” And then the film plugs away about the lack of bike lanes. Having apparently conceded that motorists will NOT actually give bicyclists that respect or cooperatively share the roads, they ask for a sliver of space in the gutter.

Which is fine. Really. If that’s what you want. But don’t imagine segregating modes is about cooperating. It’s rather about demanding public resources be spent on gutter-based infrastructure in Brazil precisely because motorists WILL NOT share the road. No one has actually changed the domination of motorists. In this “victory,” existing configurations of power remain the same, leaving bicyclists just as powerless as they always were, only now they are marginalia set off by 6 inch stripes of paint.

The incident with the Dutch cab driver was high camp and deserves its own post. It was my impression that the cabbie staged the whole thing, a real drama queen pining for his 5 minutes on camera. Basically, it was exemplary of what Nietzsche called a transvaluation of values[1]: an opportunity for bicyclists everywhere to make the motorist suffer for a change[2].

The problem is that this is an exercise in punishing schadenfreude. We are all supposed to love it that the roles have reversed in the Netherlands. The taxi driver has to be troubled, delayed, and dominated by the majority, bicyclists. We get to engage in gleeful enjoyment to see him upset, angry, cowed by the throngs of bicyclists blocking his every move. There! Take That, you bad, bad motorists. How do you think it FEELS to be marginalized like we were?

This is a stupid and shameful sentiment that shouldn’t be tolerated by anyone doing bicycling advocacy. But it is, unfortunately, celebrated by too many participation advocates – including this film, which trades in cheap theatrics and, well, quite frankly, trashy propaganda. At least have the decency to be sophisticated about it if you are going to trade in such infantilizing sentiments.

[1] I am unhappy with the choice of ‘transvaluation of values’ to express what I mean here. But it’s been a longass day. Tant pis!

[2] As for the transvaluation of values thing, for more detail on the problems with this position, see Wendy Brown’s work States of Injury: Power and Freedom in Late Modernity. Here, Brown captures the problem as one where, basically, an oppressed or marginalized group rises in power and status, promoting a compulsion to repetition rather than liberation:

“Initial figurations of freedom are inevitably reactionary in the sense of emerging in reaction to perceived injuries or constraints of a regime from within its own terms. Ideals of freedom ordinarily emerge to vanquish their imagined immediate enemies, but in this move they frequently recycle and reinstate rather than transform the terms of domination that generated them. Consider exploited workers who dream of a world in which work has been abolished, blacks who imagine a world without whites, feminists who conjure a world either without men or without sex, or teenagers who fantasize a world without parents. Such images of freedom perform mirror reversals of without transforming the organization of the activity through which the suffering is produced and without addressing the subject constitution that domination effects, that is, the constitution of the social categories, “workers,” “blacks,” “women,” or “teenagers.”

It would thus appear that it is freedom’s relationship to identity-its promise to address a social injury or marking that is itself constitutive of an identity that yields the paradox in which the first imaginings of freedom are always constrained by and potentially even require the very structure of oppression that freedom emerges to oppose.”

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The Downtube bike

On the weekend of November 7 and 8, 2015, I traveled to Pennsylvania and attended the Philadelphia Bicycle Exposition. My host John Schubert lent me his Downtube folding bicycle. I used it to explore the city and shoot video of bicycling conditions.

As I returned to the expo, Mark Casasanto, of Imperial Security, asked me whether I’d pose with three nattily-attired young women, members of his security team. Well, why not!? So I did, with the Downtube bicycle. Here’s Mark’s photo.

John Allen with members of the security team

John Allen with members of the Philly Bike Expo security team. Photo by Mark Casasanto.

Russian Immigrant Yan Lyansky sources and imports Downtube bicycles. He promotes them on the Internet, and sells them by mail order out of a warehouse, avoiding middleman expenses.

It is often easiest for an outsider to see the big picture in new surroundings. Having lived under the thumb of Soviet Communism, many Russian immigrants, in my experience, are wide-eyed to the opportunities offered by the free enterprise system.

(This specific bicycle is an older model, no longer available. The company has newer models — described on its Web site)…

At $269, even in 2006, this bicycle was a bargain. That the Downtube is a folding bicycle makes it easier to ship, and no customer assembly is needed. Even the pedals come pre-installed — folding pedals.

The Internet business model, now being increasingly adopted by mainstream bicycle brands, is a serious headache for brick-and-mortar bicycle shops — which can sell a bicycle but also customize, maintain and repair it. In case you didn’t know, their numbers are in decline.

But on the other hand, the Downtube is by no means a “bicycle-shaped object” — cheaply made and poorly assembled, as commonly sold at big-box retailers, the other bane of the brick-and-mortar segment.  The DownTube is a somewhat clunky but serviceable folder. The frame is stiff: the bike rides a lot like my old (also clunky but serviceable) customized Raleigh Twenty. Mechanically, everything about the Downtube works OK. The hinges have a clever safety feature in case someone forgets to tighten the quick releases. The derailleur gearing works fine, but I hear that the Sturmey-Archer 8-speed internal-gear hub on some Downtube bikes was a real headache, too many returns under warranty. Too bad about that: I like IG hubs better for city bikes.

I did find a couple of corners cut in components and assembly.

  • While the wheels were true, and had good aluminum rims, the spokes are cheap, galvanized, noticeably corroded in the ten years since this bicycle was new. Galvanized spokes on some of my bikes have lasted 30 years or more, but corrosion could be a problem for someone who keeps the bike near salt water.
  • The rims have recessed spoke holes, and the rim strips were not fabric, but rubber which the inner tube can punch through and go flat — also too wide to fit in the well of the rim, keeping he tires from seating properly. I replaced the rim strips with glass fiber strapping tape, which John had available. That works, though I like ductape better for this use. In either case, three or four layers should be applied.
  • Over-wide rubber rim strip

    Over-wide rubber rim strip

    Bearings in one hub were overtightened. This problem really needs attention as it can lead to early failure. This is the kind of thing which a pre-sale checkover in a bike shop can set right.  (Though sad to say, that doesn’t always happen either! Usually, though.)

A couple of specifications also weren’t to my preference:

  • The rear  fender could extend farther back. The tire can still throw water up at the cyclist.
  • The handlebars are unnecessarily long. The extra leverage of long handlebars is really necessary only for technical off-road riding and is hazardous in tight situations.  Catching a handlebar end on a post, the side of a vehicle etc. turns the front wheel to one side and results in a hard fall.

But all in all, as I said, the Downtube is a serviceable bicycle and the price was right.

John Schubert obtained this bicycle in the first place to write a review for Adventure Cyclist magazine, going into more detail on both technical specifications and the business model. Lyansky refused to take the bicycle back, and it has seen various uses, by several people, over the years. John rides it in the videos from our 2009 New York City field trip.

When I sent John my comments about the bike in an e-mail, he replied: “to me, its biggest shortcoming is that it is still pretty large when folded.  I also dislike the suspension fork.  I prefer rigid forks.  If I were to use a folding bike regularly, I’d buy something that folded more compactly.  But a folding bike just isn’t part of my current lifestyle.”

Well, a folding bike is part of my lifestyle, the bike-business issues are interesting, and so, you have this blog post! The suspension fork also helped to reduce shake in my videos.

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