Now Is the Perfect Time to Rethink Green Transportation
By Kevin J. Krizek
Sticking closer to home because of COVID-19 has shown many people what cities can be like with less traffic, noise, congestion and pollution. Roads and parking lots devoted to cars take up a lot of land. For example, in Phoenix, Los Angeles and New York City these spaces account for over one-third of each city's total area.
When stay-at-home orders went into effect in many parts of the U.S. in March, streets and parking lots went dormant seemingly overnight. Within days, municipalities across the U.S. started shifting these spaces to other uses that better suit people.
As a professor of environmental design and transport, I've worked for decades to unravel the many factors that keep people reliant on cars, SUVs and trucks. Weather, time constraints, children – there are many reasons that prevent people from using transportation modes like bicycles. Yet with a simple first step – starting to reconfigure city streets – meaningful change can begin to break down traditional transportation barriers and usher in a new culture of getting around town by means other than cars.
The Dangerous, Expensive Automobile
In large U.S. cities, nearly half of all car trips are less than four miles. Using cars to travel such short distances has many costs.
For example, consider traffic fatalities. Two pedestrians or cyclists die every hour on U.S. city streets, a national trend that's been worsening in recent years, even though cycling and walking rates are steady or declining. Pollution from cars contributes to climate change and worsens air quality. Designing cities around cars marginalizes individuals who don't have them.
In my view, this is the time to move beyond the "grab the keys" mentality on the way out the door, as millennials and GenXers already are doing. New visions for streets, where cars use less space and are replaced by smaller vehicles built for individual riders, are gaining currency.
These modes of transport might be new forms of e-bikes, e-scooters or hoverboards. These novel vehicles, which were already attracting attention before COVID-19, complement conventional bicycles, whose sales have boomed during the pandemic.
New Thinking, Different Results
Increasingly, thinking about the future of cities suggests that chiefly relying on cars as a form of transport has run its course. By minimally modifying the existing infrastructure, it is possible for city leaders to repurpose roads and parking spaces while ensuring the same ease of being able to reach daily services.
Emerging forms of mobility and changing mindsets can help deliver these opportunities. Bicycles and bicycle-like vehicles provide a catalyst to shift how city streets are used.
Research demonstrates that people will adopt new ways of getting around town when they are confident that an entire route, including intersections and parking lots, is safe for travel. Some COVID-19-induced street changes that have emerged recently, such as reducing the number of traffic lanes and closing streets to traffic, are a good first step. But they lack the network component.
Networks quickly develop the more people use them. The quickest way to build one that is scaled and purposed for people begins by identifying streets used to make short trips. These are places near neighborhood retail districts, schools and other activity centers.
Informed by local data, leaders can make decisions about which streets should give priority to vehicles such as bicycles, not cars. Changes might include physically demarcated lanes and signs making statements like "Cars are guests." Initially, these changes might require waivers to exempt them from adhering to current engineering guidelines and standards – restrictions that stifle innovation.
Avenue B, as it should B, as it was meant to B, serving a variety of active road users AND promoting social distanc… https://t.co/KPWPu4wdzu— madamwestbikes (@madamwestbikes)1590268776.0
Now large and small U.S. cities are experimenting with different strategies and contending with long-standing equity concerns about which streets to change. For example, Minneapolis has closed a number of parkways to cars, reserving them exclusively for cyclists and walkers.
Pioneering cities like Portland, Oregon, Seattle and Oakland are using this time to test ways of sharing a broader array of streets among cyclists, walkers and car users. Researchers are providing tools to identify the most promising places to reallocate space for pop-up cycle ways.
Enacting change now – in a strategic manner and while travel levels are down – may be an opportunity to reap quick gains with high impact. I believe that a better transport future is within reach by taking advantage of the space dominated by automobiles. This is the time to leverage current low-traffic conditions so that streets and roads can be converted to accommodate new technology and transport.
Kevin J. Krizek is a Professor of Environmental Design, University of Colorado Boulder.
Disclosure statement: Kevin J. Krizek does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations beyond their academic appointment.
Reposted with permission from The Conversation.
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A Game of Jenga<p>Think of it as a game of Jenga and the planet's climate system as the tower. For generations, we have been slowly removing blocks. But at some point, we will remove a pivotal block, such as the collapse of one of the major global ocean circulation systems, for example the Atlantic Meridional Overturning Circulation (AMOC), that will cause all or part of the global climate system to fall into a planetary emergency.</p><p>But worse still, it could cause runaway damage: Where the tipping points form a domino-like cascade, where breaching one triggers breaches of others, creating an unstoppable shift to a radically and swiftly changing climate.</p><p>One of the most concerning tipping points is mass methane release. Methane can be found in deep freeze storage within permafrost and at the bottom of the deepest oceans in the form of methane hydrates. But rising sea and air temperatures are beginning to thaw these stores of methane.</p><p>This would release a powerful greenhouse gas into the atmosphere, 30-times more potent than carbon dioxide as a global warming agent. This would drastically increase temperatures and rush us towards the breach of other tipping points.</p><p>This could include the acceleration of ice thaw on all three of the globe's large, land-based ice sheets – Greenland, West Antarctica and the Wilkes Basin in East Antarctica. The potential collapse of the West Antarctic ice sheet is seen as a key tipping point, as its loss could eventually <a href="https://science.sciencemag.org/content/324/5929/901" target="_blank">raise global sea levels by 3.3 meters</a> with important regional variations.</p><p>More than that, we would be on the irreversible path to full land-ice melt, causing sea levels to rise by up to 30 meters, roughly at the rate of two meters per century, or maybe faster. Just look at the raised beaches around the world, at the last high stand of global sea level, at the end of the Pleistocene period around 120,0000 years ago, to see the evidence of such a warm world, which was just 2°C warmer than the present day.</p>
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The Atlantic Meridional Overturning Circulation has a major effect on the climate. Praetorius (2018)
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