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Response to an Editorial by the Editor of the Boulder CO Newspaper

By Dom Nozzi

July 2, 2017

On July 2, 2017, Dave Krieger, the editor of Boulder, Colorado’s major newspaper — the Boulder Daily Camera — published an opinion piece called “Traffic Engineering Rules Still Apply.” The piece contained several unfair misstatements.

Mr. Krieger refers to something he calls “basic traffic engineering.” One must assume by this comment that the reference is to the conventional methods traffic engineers have used for over a century: Widening roads and intersections to “reduce congestion” or “accommodate expected growth in area car trips.”

There is one small little problem with such “basic traffic engineering.”

It has utterly failed for a century.

The trillions spent on widenings not only failed to resolve congestion. By ignoring the well-documented, inevitable impacts of induced demand (caused by what Anthony Downs calls the “triple convergence”), the widenings over the past several decades have also worsened land use patterns, increased per capita car trips, decreased per capita bike/walk/transit trips, increased household transportation costs (they are now higher than all or nearly all other household costs), increased air emissions, and caused severe financial strain not only to households but to all levels of government.51df393d218c6-image

To call Boulder council members “ideologues” is inflammatory and ironic, since those calling for widenings have a much stronger ideological bent (the ideology of a car-based, high-speed, anti-city lifestyle). Similarly, to suggest that not widening is a form of “social engineering” is hypocrisy, given the fact that the most extreme form of social engineering engaged in by a society — by far — is the social engineering of compelling millions for over a century to be car dependent.

It is mis-informed to suggest that the “complete streets” road design tactics sometimes employed in Boulder and Boulder County are ineffective in modifying behavior, as a great many studies conclude that this form of “nudging” is extremely effective in guiding many motorists to drive in more socially desirable ways.

I choose the word “nudging” deliberately, as complete streets road design tactics retain the choice to travel by car. By contrast, pro-car design tactics such as widenings are much closer to forcing most of us to travel by car.

Which is, by definition, a strong form of social engineering.

Is it okay to engage in social engineering if doing so compels a lot more people to drive by car? (ie, the normalized way to travel)

It again is an inflammatory (yet common) falsehood to claim, as this opinion piece does, that not widening forces most or all motorists to abandon their car in order to walk, ride a bike, or use transit (which the author asserts is impractical for most). Such a claim is silly, unless one can make the case that a car trip that takes seconds or minutes longer will “force” people to abandon their cars.

It needs to be pointed out that many wrongly assume, as the author does, that a growing number of people inevitably requires there to be a growth in the number of travel lanes on local roads to accommodate such growth. If this were true, cities such as NYC and LA, which are home to several million people, would have needed to build roads that are hundreds of lanes in width to avoid gridlock.

Furthermore, the author forgets that transportation is a zero-sum game. That is, when conditions are modified to further increase the ease travel by a larger number of cars, traveling by walking, bicycling, or transit is made more difficult (what Todd Litman calls the “barrier effect”), The barrier effect recruits even MORE per capita car travel.

In addition, another overlooked, yet highly important impact – particularly for the residents of Boulder – is the highly negative downstream impacts of the larger volume of cars that road widening induces. By enabling and therefore inducing higher car volumes on Arapahoe, widening imposes more noise and air pollution on Boulder, puts more wear and tear on Boulder streets, consumes more parking (which obligates Boulder to build even MORE parking), makes Boulder streets more dangerous, and dramatically reduces overall quality of life in Boulder.

Finally, it is highly misleading to assert or imply, as the author does, that all trips on Arapahoe are long-distance, relatively important and time-sensitive commuter trips from small towns (ie, trips that can only be practically made by car). We know from many studies that a large number of trips on Arapahoe are relatively low-value (ie, trips to buy a cup of coffee). Such trips are induced at times that include rush hour by over-sized, non-tolled roads such as Arapahoe, and by the lack of compact, connected street, mixed use neighborhoods. These lower value trips are less affected by slower travel times due to the relative ease of shifting when such trips occur during the day.

In sum, the author criticizes Boulder for failing to follow “basic traffic engineering rules,” yet ironically, it is he who is unaware of a great many basic engineering rules, such as the triple convergence, the barrier effect, the travel time budget, the variable nature of trip value, downstream impacts, the zero-sum game, and the social engineering that compels car travel. Worst of all, the author ignores something that has been known for several decades and is so invariable that it can be considered not only a “basic rule” but an iron law: We cannot build our way out of congestion. Widening a road to reduce congestion is like loosening your belt to solve obesity. It wrongly assumes that car traffic behaves like water flowing through a pipe. In fact, for reasons I cite above, car traffic behaves like gas. That is, when the pipe is enlarged (widening) — car traffic — like a gas, inexorably expands to fill that larger pipe.

It is a great disservice to Boulder that we have an editor-in-chief of our local newspaper that is writing poorly-informed opinions that severely undermine many important community objectives, convince many citizens that Councilmembers and their adopted long-range plan are wrong-headed (to the point of being evil and undemocratic), and make it more likely that there will be increased political will to have the community adopt ruinous tactics that have almost universally failed for over a century.

Someone on Facebook responded to my comments by asking what to do about the 50,000 commuters that drive into Boulder each morning. We don’t have a clean slate, he told me. My response:

A fundamental principle is that if you find yourself in a hole, stop digging. Stop treating Boulder like a doormat repeatedly (by continuing to widen, as Boulder has done over and over again historically), in other words.

There are several tactics that can be employed to positively address the large number of commuters. An obvious tactic is more housing — particularly more affordable housing. We can also start tolling major roads, provide more transit coupled with more park-n-ride, provide more compact and mixed use development, make major roads more like complete streets (rather than the car-only stroads they are), create more priced parking and parking cash-out (particularly at workplaces), reduce the quantity of free parking, convert minimum parking regulations into maximum parking requirements, and reduce the size of over-sized roads and intersections. NONE of those things PROHIBIT a person from continuing to in-commute by car to Boulder.

A person can continue to do that.

What each of these equity-enhancing tactics do is NUDGE travelers toward more socially, economically, and environmentally desirable travel. Some motorists will be inconvenienced in the short term, which many of us consider to be a very fair trade-off, since the inconvenience creates more equity, less air and noise emissions, lower taxes, less wear and tear, more safety, and less per capita car travel. In the long term, such tactics will improve the region, as they will induce more commuters to live closer to their destinations, enhance transit service, increase the amount of in-town housing, reduce higher speed car travel, improve conditions for smaller stores (rather than Big Box stores), and increase Boulder’s ability to shrink oversized parking lots, roads and intersections.

Note that most all of the motorists would be commuters, but it must be kept in mind that a large number of motorists on Arapahoe are NOT commuters (which means they will have more flexibility about where or when or how they travel).

Economists have calculated the approximate financial cost of travel by car, bike, walk, or transit. Those calculations show that each car trip imposes a financial COST on the community (a cost that most or all in the community must pay, regardless of whether they drive a car or not). Each bike/walk/transit trip results in a positive financial BENEFIT for the community (a benefit that most or all in the community enjoy, regardless of how they travel).

Knowing this, what should we do to be fair and to achieve community objectives? In other words, how do we make our community more financially sustainable?

Many of us believe that should one choose to travel by car, one should compensate for the cost imposed on the community. The most fair way to do this is to deploy user fees such as a gas tax, tolls, a VMT fee, etc. (rather than have everyone pay, through sales taxes, property taxes, higher grocery bills, or lower quality of life, regardless of whether they travel by car or not).

Again, user fees are nudges. They do not force people to stop driving a car. Therefore, they rightly acknowledge that many trips must be made by car. User fees simply make transportation more equitable, and nudges those with a choice to consider traveling in more socially desirable ways.

Note, too, that traffic congestion is a form of nudge. As Todd Litman would say, congestion imposes a “time tax” on the rush hour motorist, which nudges those with a choice to consider driving at non-rush hour times or live closer to their destination, or choose a different route. A time tax is obviously easier to achieve than a more effective and efficient tolling of the road, of course.

Temporarily reducing congestion by widening short-circuits that relatively affordable and achievable form of nudging.

Many cities in the past put all of their “eggs” (their trillions of public dollars) into the conventional “basic engineering” tactics that the author promotes. They did so while being in precisely the same situation that Boulder is in: What to do about congestion? What about all the in-commuters? They all greatly worsened their transportation situation and their quality of life. Examples of those cities include Phoenix, LA, Houston, Orlando, Las Vegas, Houston, Dallas, Jacksonville, Cleveland, Buffalo, Syracuse, and Rochester.

I don’t want the Boulder region to go down the path of any of those unfortunate cities by opting for “basic engineering” tactics that the author urges, because those “common sense” tactics greatly worsened the situation.

We can do better. Let’s not keep making the same ruinous, bankrupting mistakes.

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Effective Ways to Encourage More Bicycling

By Dom Nozzi

I have over 20 years of experience as a senior city planner, am a lifelong bicycle commuter, prepared a master’s thesis on bicycle travel, and am a published author describing car traffic and sprawl.

I know of no simple, quick, easy ways to induce large numbers of contemporary Americans to engage in more bicycling on pathbicycling. I do, however, know of tactics that can be effective, yet require a number of years, political leadership and wisdom, and enlightened staff and citizens. For these reasons, the tactics are rarely used in America, which helps explain the embarrassingly low levels of bicycling in the US.

In no particular order, effective tactics include (and to some extent overlap):

Affordable housing and transportation choice require that we reduce distances. If we provide more housing and sensitive intermingling of offices, schools and shops with that housing, we will provide more affordable housing because families will reduce their car ownership (owning, say, two cars rather than three) and devote more income to housing. We need to combine this housing strategy with higher commercial intensities, which is primarily achieved by substantially reducing the massive oversupply of parking that nearly all retail locations provide.

The absence of market-distorting subsidies for car travel. By far, the biggest subsidy in America is free parking. One of the most important reasons why most all Americans drive a car for nearly all trips, rather than bicycle, walk or use transit, is that over 98 percent of all trips are to locations w/ free and abundant parking. As Shoup points out, free and abundant parking is a fertility drug for cars.

Similarly, we need to start correcting other funding inequities, because motorists pay nowhere near their fair share of transportation costs. It is commonly believed and utterly false that gas taxes pay the costs that motorists impose on society (such taxes only pay a tiny fraction of those costs). In addition to starting to price a much larger percentage of parking, we need to convert many of our roads to become toll roads. Other tactics include a “vehicle miles traveled” tax, much higher gas taxes, and “pay at the gas pump” car insurance. These pricing tools would provide much-needed fairness and adequate funding in an age where funding unfairness is enormous and transportation funding is entirely inadequate. The tools also effectively nudge travelers toward greener travel. Such fees could replace or reduce existing taxes or fees (a concept known as being “revenue neutral”).

To be safer and more compatible with housing, shops and non-car travel, streets must be designed to obligate slower, more attentive driving. The large speed differential we see on nearly all roads today between cars and bicyclists is an important reason why so few feel safe riding a bicycle. A small speed differential between cars and bicycles can be created by using traffic calming measures such as modest street dimensions and on-street parking.

Many roads, streets, and intersections are too large. They degrade quality of life, reduce safety and force too many of us to drive a car too often. Shrinking roads (by, for example, reducing them from five lanes to three) is an essential way to promote transportation choice. Roads in a city that are five or more lanes in size are incompatible with a quality human habitat, and make it too dangerous for bicycling, walking or transit use. “Road diets” are increasingly used nationally.

When effective tactics are properly deployed for a reasonable period of time, a powerful, self-perpetuating virtuous cycle begins to evolve. When non-bicycling members of the community observe a large number of others bicycling, many are likely to be induced to begin bicycling because of the “safety in numbers” perception, the fact that bicycling seems more hip, “normal” and practical (“If he/she can do it, so can I!”), and the growing awareness on the part of motorists that bicyclists are likely to be encountered (which also increases motorist skill in driving on a street being used by bicyclists).

Note that the above should not be taken to mean that I believe we should “get rid of all cars”, or that American cities should build auto-free pedestrian/bicycle zones. I support well-behaved, unsubsidized car use that is more optional than obligatory. Car use and design that is subservient to the needs of a quality habitat for humans, rather than the situation we find in most all American communities, where cars dominate (and in many ways degrade) our world. A dysfunctional place where cars are so dominating that transportation choice is lost. Where it is not practical, safe or convenient to travel, except by car.

Instead, we need to return to the timeless tradition of designing to make people happy, not cars.

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Visit my urban design website read more about what I have to say on those topics. You can also schedule me to give a speech in your community about transportation and congestion, land use development and sprawl, and improving quality of life.

Visit: www.walkablestreets.wordpress.com

Or email me at: dom[AT]walkablestreets.com

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Filed under Bicycling, Economics, Politics, Road Diet