The Locomotion Initiative  

Section 1: MINIHIGHWAYS

First Step for Sustainable Transportation

Sustainable transportation cannot be achieved with greener cars alone. In large metro areas with congested highways, building new non-sprawl roadway systems (minihighways with minilanes) for new vehicle types (minicommuters) is the most convenient, cost-effective, and efficient breakthrough.

CONTENTS of Section 1
(click on bold titles to scroll down)
 
Introduction
MINIHIGHWAYS: The Proposal
THE BENEFITS of Minihighways
Strengthening the Economy
Creating Better Megacities
Mitigating Global Warming
Enhancing Homeland Security and Defense
QUESTIONS & ANSWERS

 

INTRODUCTION

19th and 20th century Americans built the most comprehensive and productive canal, rail, highway, and airport infrastructures of all time.

The construction of America’s transportation system was progressive and, for the most part, self-funded. Each new infrastructure was sustained by renewed growth, not subsidies. But over time all new infrastructures reached a tipping point requiring growing subsidies. This made building more of the same increasingly unsustainable.

America’s rail infrastructures evolved in stages transforming a poor rural nation into a wealth machine 25% urban by 1860 and 50% urban by 1920. But the population densities of modern cities and mass transit proved to be too high and building more rail became expensive and impractical.

Highways and airports came to the rescue creating an even stronger middle class making America 75% urban by 2000. But the population densities of car-dependent megacities proved to be too low with construction of more highways and airports too expensive and impractical as well.

The growing expenses and congestion of highway sprawl make continued development with highways increasingly subsidized, hence unsustainable. The proposal below updates the transportation mix yet again. This transforms today’s megacities for decades of development with shrinking subsidies and growing benefits, both economic and environmental.

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MINIHIGHWAYS: The Proposal

Urban highways are top choking points to the American economy and the productive development of our cities. But widening highways in today’s congested megacities or building new ones does not reverse highway obsolescence anymore. Sustainable development is best achieved by creating cost-effective roadway alternatives to urban highways.

We call these new infrastructures “minihighways.”

Minihighways are designed to serve large metropolitan environments and, by so doing, to remove traffic from the most congested highways. Minihighways are low cost and low impact rights-of-way for the exclusive use of low cost, low impact one-person vehicles or “minicommuters.” Minicommuters are designed without side passengers (a second seat is possible in tandem) and to be excluded from existing highway lanes.

Unlike today’s congested urban highways, minihighways are cost-effective and sustainable growth infrastructures because they are designed with half-lane, half-height “minilanes” for the exclusive use of efficient minicommuter cars and other approved vehicles such as motorcycles, even bicycles.

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THE BENEFITS of Minihighways

The benefits of building city-centric minihighway networks for today’s congested metro areas transcend transportation. The following are some of the most significant:

Strengthening the Economy

Low Construction Costs

Unlike building new or widening existing urban highways, minihighways can be built very quickly and cost-effectively. The construction cost of minilanes serving the inner half or three-quarters of any large postmodern megacity is a magnitude or two (1/10th to 1/100th) less than the cost of building an equal number of highway lane miles for the same area of service.

MinihighwaysThere are many reasons for these pronounced cost savings. The most significant is that a 4-lane minihighway fits within the 3-D space of a single highway lane. That is a very beneficial adaptation. It is possible because today’s highway lanes are 12-feet wide with over 14-feet clearance below bridges and tomorrow’s minilanes are 6-feet wide with over 6.5 feet clearance between double-decked minihighways below existing overpasses.

But many other configurations are available with further cost reductions and little or no expropriation. Some of these might be building minihighways above or on the adjacent buffer space of existing highways, below or adjacent to main electric lines, and above drainage ditches and train tracks. Others follow commercial corridors avoiding buildings in ways high impact highways never could.

High Profit Potential

Since today’s highway commute is a vast and increasingly stressed market, the numbers of commuters switching to minihighways grows quickly. This makes minihighways financed with tolls or fees more profitable to taxpayers or private investors than original highways built for non-existing car and SUV commuters and semi-trailer trucks decades into the future.

Economic Development

With America’s urban environments developing efficiently once more, America embarks on decades of enhanced growth and prosperity the proven old-fashioned way: progressively and for profit. The population required to sustain construction of new infrastructures (transportation and others) grows indefinitely, transforming our cities into superior living environments while increasing our tax base. With population growing and the middle class reenergized, bankrupt safety-net programs like Social Security and Medicare approach solvency again. Subsidies of all kinds disappear, lowering taxes.

Creating Better Megacities

Enhanced Viability of Metro Areas, Mass Transit, and Airports

Minihighways make the most congested urban highway corridors cost-effective growth infrastructures again. The sustainable metropolitan environments of the 21st century will now arrive, as they must: Delivered by well-managed market forces, not growing subsidies for building “more of the same” increasingly expensive highway lanes.

Minihighways

With congested highways loosing traffic to minihighways in the city and older suburbs of metro areas, population densities grow once more. This makes existing and new rail transit solutions cost-effective again. The enhanced economics of urban rail reduces the “hub-and-spokes” operations of multi-flight air travel. This eliminates congestion in large metro airports without building new runways.

MinihighwaysReduced Cost-of-Living In the More Developed Areas

The two largest expenses of today’s increasingly urban middle class are transportation and housing. Both costs drop significantly because fewer cars are needed (a typical 3-car family lives comfortably with one car and two minicommuters) and non-sprawl housing (new low to mid-rise apartments and townhouses) becomes competitive again. Just like new city neighborhoods did during a century of evolving urban rail systems.

Furthermore, dedicated portions of existing parking quadruple vehicle capacity (cars need some 300 square feet; minicommuters need only 75 square feet). This structural efficiency reduces the cost of new construction. With less expensive development in areas transitioning to minihighways, the cost-of-living dives as it did in the early decades of mass transit and highways. The middle class is strengthened and cities renewed.

Mitigating Global Warming

Environment and Climate Change

The benefits of a more efficient vehicle mix on the same right-of-way are pronounced. Not only do minihighways reverse congestion, the now impossible becomes commonplace:

By reducing the use of conventional cars, growth itself reduces sprawl, global warming, and oil use even if the new urban-suburban minicommuters are gas-powered at first. With large metropolitan areas evolving into more affordable and compact neighborhoods, distance and time of travel are progressively reduced. Congested metro areas everywhere are transformed with big auto and oil companies, among others, adapting to compete in more earth-friendly built environments.

Global Economy and Environments

With America taking the lead advancing a sustainable solution for congestion-busting development, other nations build minihighway networks for their crowded metro areas. Enhanced traffic conditions domesticate high cost/high impact highways everywhere transforming all megacities into superior built environments. This benefits everyone including poor nations. Also:

Enhanced economic viability reduces pressure to emigrate. Habitat destruction is reversed and species saved. Use of fossil fuels drops globally reducing carbon emissions.

Enhancing Homeland Security and Defense

A sustained drop in the demand for oil in America and increasingly elsewhere dries out the income of unfriendly and unstable oil-rich nations forcing reform. This makes true capital-friendly “smart growth” policies such as minihighways a key ingredient fighting terror.

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QUESTIONS & ANSWERS

1.
Obviously your goal is to promote fuel-efficient compact cars. Why not come right out and say so?
 
We do need to reduce oil consumption but compact cars are not the solution. Small vehicles of any kind are too dangerous for highway travel, especially with families on board. Minicommuters are not compact cars but a new class of vehicles altogether conceived to be excluded from today’s highways and to share high-speed travel only with similar much smaller vehicles.

An accurate but more fun description of the new vehicle types might be:
Minicommuters are urban-only vehicles slightly bigger than average motorcycles. Minicommuters are designed with full-sized ergonomic seats for the driver and, when applicable, a second seat behind it. The driver and his passenger are both located on the exact centerline of the vehicle surrounded by an enclosed wraparound glass cabin, not unlike jetfighters, providing creature comforts and security.
Any resulting fuel efficiency, and there’s plenty, is a direct result of more convenient and cost-effective rights-of-way to move about and park in large urban environments.
 
 
2.
American’s love their cars. What makes you think we are ready to abandon them?
 
There was a time Americans could not conceive of “abandoning” their horses or railroad travel. But we did because our needs changed as the build environment around us changed.

Americans will embrace minicommuters and minihighways for the same reason we embraced cars and highways in the first place: because we are (increasingly and irreversibly) urban dwellers in need of faster, more convenient, and less expensive ways to get around growing more complex built environments. With congested highways loosing traffic to minihighways, we start enjoying our cars again.
 
 
3.
Why not build new highways and widen existing ones?
 
America’s been there and done that. Early highways were city-centric and mostly self-funded financed with tolls. Not anymore. Highway dependent development is only possible at greater and greater distances from the Center and even these highways are increasingly subsidized. Highway widening near the Center is even more expensive per new lane-mile. It is also of no practical value eliminating gridlock because primary “next-level” roads at and near the Center cannot handle more high impact traffic themselves.
 

4.
Why not build more mass transit?
 
American cities do need more mass transit—lots more—but not as we plan for these systems today. Postmodern mass transit concepts have changed precious little over the past half century making new systems increasingly expensive to build and operate.

Like urban highways themselves, the economics of new mass transit systems are also past their prime requiring growing subsidies. Even with subsidies, building new mass transit systems in areas where cars dominate generates losses with highway commuting still needed to access Park & Rides. Highway congestion is not reversed and subsidies continue to grow.
 
 
5.
What kind of an architect are you? How dare you propose we stop building mass transit?
 

I love mass transit but only when it works as it does in New York where I lived until recently. But the economics of building new mass transit systems serving postmodern highway-dependent megacities is at best marginal and generally not even that. Minihighways change that for the better because sprawl is checked and population densities increase again in a sustained city-centric way.

Minihighways transition sprawling lower-density megacities into more compact higher-density built environments making new mass transit solutions economically viable. A new planning paradigm emerges primarily for two reasons:

  1. Commuters can now access their rail stations via convenient and mostly self-funded minihighways, not gridlocked subsidized highways, and

  2. With development closer to the Center sustainable again, distance and time of travel are both reduced.

Minihighways and mass transit quickly become growth infrastructures, with minihighways preceding mass transit by a few years or decades depending on the needs of each megacity.

But there is another all-important benefit: existing highways become sustainable growth infrastructures again because they loose traffic to minihighways in particular and growth in general.

 
 
6.
What makes construction of better highways and new mass transit so expensive?
 
All infrastructures have design limitations; growth limits that can only be reversed temporarily and only with growing inconveniences and expenses. A growth limit is approached when the built environment grows inefficiently bankrupting civilization. We continue to build with yesterday’s solutions because we capitulate to entrenched interests failing to envision the next sustainable self-funded stage.
 
 
7.
Why are minihighways the “First Step” for sustainable growth? Why not something else?
 

Second question first:

Other very profitable transportation infrastructures are possible, even likely. (I address some of these in my first book, which I hope to complete next year, and will be addressing some of these here.) But these Next Stage Solutions to America’s urban locomotion needs are highly customized to their specific urban environments. Although all minihighway networks are designed to reflect local needs and desires, all large metro areas benefit when a convenient cost-effective alternative to congested highways becomes available.

And now to the first question:

Minihighways are the essential First Step because this roadway-vehicle combo accomplishes three goals contemporary development practices fail to achieve:

FIRST: Minihighways require little or no subsidies because (properly customized to local needs) they are uniquely cost-effective.

SECOND: Minihighways reduce congestion throughout the megacity making existing highways productive growth infrastructures as they exist.

THIRD: Minihighways make new and renewed mass transit systems economically viable, even profitable, over time.

 
 
8.
Surely you exaggerate; highways are not America’s only economic “choking point”?

Choking point in not my term but I strongly endorse it. Norman Mineta, outgoing Secretary of Transportation in 2006, declared highways the choking point of the American economy. He attributed most of this “growth limit” (my term) to highway congestion estimating the cost at $200 billion a year. That’s roughly the cost of the wars in Iraq and Afghanistan.

By the way, you are correct; there are other choking points to our economy with congested century-old mass transit (see Section 3) and large metropolitan airports second only to highways. But the best way to decongest airports is not building more runways—the obvious but structurally unworkable solution—but gradually eliminating the first and last connecting flights of today’s multi-flight “hub-and-spokes” operations.

Properly designed and managed, the new urban rail systems made possible by minihighways reenergize the greater railroad infrastructure. This makes airports productive new rail destinations voiding the need for the “spokes” part of our air-travel plans. With smaller airplanes increasingly out of the way, airports sustain economic growth and urban development as they exist. The socioeconomic and environmental benefits are enormous and flying becomes fun again.
 
 
9.
I ride a motorcycle and support minihighways. But how do we keep entrenched interests (such as car manufacturers and oil) from torpedoing progress?
 

The best way to fight economic dinosaurs is to keep our eyes on the price: Evolving to grow sustainable and profitable again.

Car companies might be reminded that they are in the transportation business (not the car, SUV, and truck business) and can benefit more than most if they “evolve to grow.” After all, car companies everywhere are already loosing money, in part, because roadway infrastructures across the globe fail to sustain strong growth with private vehicles a growing population needs and can afford. (Sooner or later, growing car markets like China and India will peak. Then what?)

Car companies can reverse their fortunes by proposing to build and operate minihighway infrastructures for profit, not unlike early urban transit entrepreneurs. The deals they propose might include partial conversion of exiting highways and non-highway rights-of-way as well as annual license fees and one-time compensation payment for each minicommuter provided by competitors.

Oil companies might be reminded that they are in the energy business and can also benefit if they “evolve to grow.” For example, with car-dependent megacities across the globe growing efficiently again—this time with minihighways—new and mostly poorer participants in the economy create wealth. Soon enough the new middle class starts building new homes, businesses, and neighborhoods, many of them in developed suburban areas transformed for non-sprawl growth by minihighways.

With cost-effective development in the ascendancy once more, the need for energy grows. But so does the opportunity to growth with green technologies. The economics of development are such that many old buildings are progressively demolished. New green buildings, most of them much larger than the original, take their place. With growth and development profitable again, everyone benefits including transportation and energy providers.

 
 
10.
Do you envision a national effort building minihighways such as the Federal Aid Highway Act [of 1956], which created the Interstate Highway System?
 
No. Minihighways are local urban-only transportation networks and work best if metro areas are not linked. Although all American megacities have congested highways, each metro area is unique. Disparate megacities such as New York and LA likely benefit from different standards for their minihighways and minicommuters making a national minihighway system less efficient than independent local or regional systems.

The most productive role the US Congress and the Department of Transportation can play is setting goals for sustainable “growth with transformation”, removing obstacles to those goals and making existing rights-of-way available to the owners of minihighways, whether public or private. Startup grants might expedite results. But given pronounced benefits to existing highways (the most congested of which will loose traffic to minihighways) and the enhanced viability of mass transit and airports, these grants are easily fundable with available resources properly redirected.

To summarize: All that’s needed from Washington, state, and city governments is smart visionary policy, not large public investments with growing taxes.
 
 
11.
I’m a New Yorker and an architect. I believe congestion is a sign of my city’s vitality and strength. Do you agree?
 

Yes, New York is quite alive and, for many of us, the center of the universe. But the city is not as successful advancing civilization and quality of life as it has been and can be again.

Congestion seems natural even desirable to us because it is part of the built environment as we experience it and it shapes our lives. But the negative consequences of growing unchecked congestion are very real. For all practical purposes NYC stopped building subways in the 1930s and highways in the 1960s. New York’s “vitality and strength” is a lingering residue of that limited manmade resource, which was build mostly for profit with subway fares and highway tolls. But for some time now, building more of the same rail and highway infrastructures requires extraordinary subsidies adding little growth potential to the city or value to its inhabitants.

The following is a quote from the USDOT:

“Growing congestion is not simply a nuisance. It has become a drain in the economy, badly impacts families and quality of life, drives up costs, increases pollution, distorts real estate markets and development patterns, reduces labor pool accessible to employers, decreases safety, and increases emotional stress.”

Nice summary of the mess were in, don’t you think? The socioeconomic and environmental consequences of growing congestion can not be reversed with existing or new mass transit and highways as we plan for them today. Furthermore, the architectural solutions today’s transportation infrastructures promote are not sustainable. We need to transform the city and our way of life again.

As in the past, this is best achieved with new transportation infrastructures that are more convenient, cost-effective, and efficient. With more and more people using the new infrastructures—in this case minihighways serving New York City and a fast growing number of its suburbs—high cost highways loose traffic to low cost minihighways. With congestion retreating and costs in check, development is reenergized. The USDOT quote above can now be rewritten:

“Shrinking congestion is a great asset. It strengthens the economy, enhances families and quality of life, drives down costs, reduces pollution, creates sustainable real estate markets and development patterns, increases labor pool available to employers, increases safety, and decreases emotional stress.”

Now, wouldn’t that be great: a wealthier, healthier and less expensive New York! Not only is the vitality and strength of Greater New York renewed, with all congested metro areas across the country retooling competitively so as not to be left behind, America’s vitality and strength is also renewed.

Architects like you and me have more work than ever. We start building the cities of the future—nor because our buildings are more exciting (which they will be); not because we’re smarter or more virtuous (which we won’t); not because of legislated mandates, taxes or subsidies—but because more convenient, cost-effective, and efficient “growth infrastructures” are finally under construction. The transformation of the American way of life begins in earnest unleashing market forces that make other transportation solutions viable as well. (See following Sections.)

 
 
12.
Minihighways are less expensive than highways, of course. But 1/10th to 1/100th cheaper, I don’t think so?
 

Urban highways are 3-D environments including extensive manmade topography with over and underpasses. Since total right-of-way volume, not pavement square footage, is the dominant factor controlling costs, doubling the total number of lane miles with new half-lane/half-height minilanes reduces the impact of the new systems to 1/8th the effective volume of the existing highways minihighways complement. (A cube with halved sides is 8 times smaller.)

That pronounced volume and cost reduction assumes that nothing but lane width and vertical clearances change. But in fact many other design standards do change creating further structural efficiencies with profound cost benefits. Some examples:

  • Live design loads and turning radiuses are greatly reduced.
  • Maximum slopes are greatly increased.
  • Expropriations are mostly avoided.
  • Existing highways and buildings remain untouched.
  • Construction timeframe shrinks to years, not decades.

These new minihighway standards create savings several times better than an eighth cost reduction, say 1/32nd or 1/48th.

But there is another economic opportunity bringing costs down even further: Good old-fashioned competition. The marketplace takes over with private investors building minihighways for profit. The only incentive government must still provide is free use of public lands and rights-of-way. This should overcome any legal challenges because similar no-cost deals have been struck before with spectacular results. The most prominent were railroads, which built America’s continental infrastructure, and early mass transit systems, which built America’s modern cities.

But there is yet another all-important cost-benefit. Although this one is indirect, it may prove to be the most consequential to our economy:

With congested urban highway loosing traffic to minihighways, with new mass transit solutions increasingly viable and with metropolitan airports productive growth infrastructures as they exist, transportation subsidies are greatly reduced. New government policy redirecting these subsidy savings could build many minihighways from start to finish. This makes minihighways profit centers for funding other much-needed infrastructures, especially mass transit and high-speed rail.

But there is more. See THE BENEFITS of Minihighways earlier in this section for further benefits to the economy, natural environments, global warming, and national security. Once all direct and indirect benefits are considered, projections for a 1/100th cost saving vis-à-vis an equal number of doubled highway lanes may prove to be conservative.

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