A review of Better Buses, Better Cities
Also published at Resilience.orgWe often hear that “the greenest building is the one you already have.” The idea is that the up-front carbon emissions released during the production of a new building can outweigh many years of emissions from the old building. So in many cases retrofitting an old building makes more environmental sense than replacing it with a new “state-of-the-art” facility.
But should we say “the greenest transportation infrastructure is the one we already have?” Yes, in the sense that by far our biggest transportation infrastructure item is our network of paved roads. And rather than rushing to construct a new infrastructure – with all the up-front carbon emissions that would entail – we should simply stop squandering most of our road lanes on the least efficient mode of transportation, the private car.
While new light-rail systems, subways, inter-urban commuter trains all have their place, simply giving buses preference on existing roads could improve urban quality of life while bringing carbon emissions down – long before the planning and approval process for new train lines is complete.
Steven Higashide’s new book Better Buses, Better Cities is a superb how-to manual for urban activists and urban policy-makers. The book is filled with examples from transit reforms throughout the United States, but its relevance extends to countries like Canada whose city streets are similarly choked with creeping cars.
Given the book’s title, it is ironic that few of these reforms involve improvements to the bus vehicle itself (though the gradual replacement of diesel buses with electric buses is an important next step). Instead the key steps have to do with scheduling, prioritizing the movement of buses on city streets, and improving the environment for transit users before and after their bus rides.
Higashide begins the book by noting that buses can make far more effective space of busy roads:
Add bus service to a road and you can easily double the number of people it carries – even more so if buses are given dedicated space on the street or if a train runs down it. When you see a photograph of a bus in city traffic, there’s a decent chance that the bus is carrying more people than all the cars in the same frame.” (Better Buses, Better Cities, page 3)
Buses move more people than cars even on congested streets, but the people-moving power of a street really soars if there is adequate dedicated space for pedestrians, cyclists and transit users:
Frequency equals freedom
Which comes first – a bus route with several buses each hour or a bus route with big ridership? Municipal politicians and bean counters often argue that it makes no sense to up the frequency of lines with low ridership. But many surveys, and the experience in many cities, show that potential riders are unlikely to switch from cars to buses if the bus service is infrequent. In Higashide’s words,
The difference between a bus that runs every half hour and a bus that runs every 15 minutes is the difference between planning your life around a schedule and the freedom to show up and leave when you want.” (Better Buses, p. 23)
There is thus an inherent tension between planning routes for frequency, and planning routes for maximum coverage. The compromise is never perfect. A small number of high-frequency routes might get high ridership – as long as the major destinations for a sufficient number of riders are easily accessible. A route map with meandering service through every area of a city will provide maximum coverage – but if service is infrequent and slow, few people will use it.
In any case, overall bus network plans must be updated periodically to reflect major changes in cities, and Higashide provides case studies of cities in which transit restructuring was accomplished with very good results in a short time period.
Still, adding several buses each hour doesn’t help much if the streets are highly congested. Instead the result might be “bunching”: a would-be rider waits for a half hour, only to then have three buses arriving in a row with the first two packed full.
He emphasizes that “making buses better can start with redrawing a map, but it has to continue by redesigning the street.” (Better Buses, p. 37)
To emphasize the point he cites declining average speeds in most US cities since 2012, with New York City buses crawling at 7.6 mph in 2016. “Among the culprits,” Higashide writes, “is the enormous increase in Uber and Lyft rides; Amazon and other retailers have also led to a doubling in urban freight traffic associated with online shopping.” (Better Buses, p. 44)
Effectively restricting some lanes to buses is one strategy to make transit use an attractive option while making better use of road space. Others are the introduction of advance traffic signals for buses, or “bump-out” bus stops that allow buses to travel in a straight line, rather than swerving right to pick up passengers and then waiting for a chance to move back out into the traffic.
Transit planners often overlook the pedestrian experience as something that’s out of their realm, Higashide says. But a large majority of bus users walk to the bus, and then walk from the bus to their destination.
Unfortunately the dominance of autos in American cities has resulted in streets that are noisy, polluted, frightening and unsafe for pedestrians. In addition transit stops often have no shelter from scorching sun, cold wind or rain, and transit-using pedestrians may have very good reason to feel unsafe while they wait for a bus or while walking to or from the bus. Higashide gives welcome attention to these issues.
Finally, he discusses the rapid progress made by activists in cities where “pop-up” projects have introduced ideas such as dedicated bus lanes. Transit agencies, he says, “have to discard ponderous project development processes that result in 5-year timelines for bus lane projects and try tactical approaches that change streets overnight instead.” (Better Buses, page 11)
The people most likely to need better bus services are least likely to sit through years of public consultations. But pilot projects on specific street sections can demonstrate the many benefits of bus prioritization – for transit users, pedestrians, cyclists, car drivers and businesses alike. Higashide discusses pop-up projects which have been introduced in weeks instead of months or years, and have proven effective so quickly that they were adopted and expanded.
That’s good news for city dwellers, and good news for the rest of us too. With such an urgent need to cut carbon emissions, fast, we can not afford to spend ten or fifteen years waiting for huge new transit infrastructures. Likewise we shouldn’t put our hopes in a vast new fleet of electric cars, which will clog streets just as thoroughly as internal combustion cars do today.
In his conclusion, Higashide turns his focus directly to both the social justice and carbon emission implications of transit choices. Speaking of Green New Deal policies, he says “what they choose not to fund is as important as what they do fund.”
Federal policy must make it harder to build new roads, recognizing that highways are fossil fuel infrastructure as surely as oil and gas pipelines are and that their construction often directly harms neighborhoods where black and brown people live, so that suburban residents can get a faster trip.” (Better Buses, page 128)
We don’t need more lanes of pavement. We need to make room for buses on the pavement we already have.
Photo at top: Chicago Transit Authority buses at 87th St, photo by David Wilson, via Wikimedia Commons