Study suggests traffic would flow much faster if we kept the proper distance between cars

The science of traffic once again suggests we all could be driving faster if we followed a simple rule:

But a new study in IEEE Transactions on Intelligent Transportation Systems mathematically models the implications of the larger problem: You’re not keeping the right distance from the car behind you.

That may seem counterintuitive, since you don’t have much control over how far you are from the car behind you—especially when that person is a tailgater. But the math says that if everyone kept an equal distance between the cars ahead and behind, all spaced out in a more orderly fashion, traffic would move almost twice as quickly. Now sure, you’re probably not going to convince everyone on the road to do that. Still, the finding could be a simple yet powerful way to optimize semi-autonomous cars long before the fully self-driving car of tomorrow arrives.

Traffic is perhaps the world’s most infuriating example of what’s known as an emergent property. Meaning, lots of individual things forming together to create something more complex. Emergent properties are usually quite astounding. You’ve probably seen video of starlings forming a murmuration, a great shifting blob of thousands upon thousands of birds.

But it feels so much better to let that pokey driver ahead know you are there by following closely!

For an earlier blog post about how science could improve traffic, read about zipper merges and other individual actions drivers can take.

Shopping malls continue to be less about shopping

Shopping malls across the United States continue to evolve in order to bring in customers:

Many mall owners are spending billions to add more upscale restaurants and bars, premium movie theaters with dine-in options, bowling alleys and similar amenities. Some have turned swaths of space that previously housed department stores over to health clubs and grocery stores. Others are undergoing no less than a ground-up transformation to make room for office space, hotels and apartments.

The trend has been gaining traction as the companies that operate malls look for ways to keep people coming in at a time when Macy’s, Sears and other big department store chains have shuttered hundreds of stores and consumers increasingly opt to shop online…

Carving out space for movie theaters, videogame arcades and food courts isn’t a new strategy. What’s noteworthy is the degree to which mall owners are now counting on tenants that sell experiences, rather than physical goods. The share of space occupied by non-retail tenants at regional shopping malls reached nearly 13 percent last year, according to commercial real estate tracker CoStar. It was 10.5 percent in 2012.

Since 2014, about 90 large U.S. malls have invested more than $8 billion in major renovations, according to a study by commercial real estate firm JLL. Some 41 percent of the malls in the study spruced up their food and beverage offerings with an emphasis on restaurants that serve more varied fare and, in some cases, alcohol.

With these changes, I wonder if at some point the term “shopping mall” will become defunct. We already have one term in the running from recent years: “lifestyle centers.” Could a new term arise that invokes downtowns or community centers or activity nodes?

If this indeed continues the shift away from traditional retail stores, it is worth pondering how many of these centers based on experiences can exist. How much can Americans spend on eating out? (Apparently now more than grocery store purchases.) How many regional centers like this can there be?

Is the $11k playhouse for children a mansion or a McMansion?

The title of this expensive children’s playhouse – $11,160 on Amazon – is the “Grand Mansion Portico Playhouse.” Although it is sized for children, is it more of a mansion or McMansion?

On the mansion side:

-Lots of space compared to the typical playhouse.

-Expensive. How many people can afford such a playhouse for their kids?

-The architectural features are symmetrical and not excessively garish.

On the McMansion side:

-The architectural features are only on the front and are likely meant to impress those looking only at the front of the house. (There is nothing on the sides and an adult-sized French door in the back.)

-Two story foyer in the front. (It appears the interior is open two stories throughout the house.)

-An unfinished interior. Not even drywall. This echoes the stories of homeowners putting all the money into a big home and not being able to furnish it.

Summary:

In the end, I would vote this playhouse a mansion because of its price and size. If there was a $500-$1,000 playhouse on the market, that might count as the McMansion of the children’s playhouse world.

Side note: it would be interesting to see the reaction of children if they were presented with this fully constructed abode on Christmas morning.

A benefit of having a higher income: less likely to have roommates

Even as single-person households are the largest group of households in the United States, it takes more resources to have that level of privacy:

“When you look nationwide at the share of households that had roommates or lived with parents, it did start to increase in the years just before the housing bust,” said Aaron Terrazas, senior economist with Zillow. “But it really took off during the financial crisis” that began in 2007, often referred to as the Great Recession.

Since 2005, the doubling up has increased at the same rate among employed and unemployed adults, regardless of age, Zillow found. The share of 20-somethings living in doubled-up households climbed faster than any other age bracket, but people in their 50s came in second.

The median individual income of an employed adult in a doubled-up household is $30,000, compared with the $45,000 earned by those living alone.

“I think there are both demographic and economic forces driving this doubling up — living with parents or living with roommates,” Terrazas said. “In the near term, I don’t see those forces turning around.”

I suspect more Americans would want to live alone – for reasons that sociologist Eric Klinenberg describes in Going Solo – but resources can hold them back. I wonder if the same trend is present on college campuses: those students with more resources live in solo rooms or can live in nicer settings off campus while others may not be able to access those residences.

More broadly, this gets at what Americans think about privacy and intimacy, personal space, and what home should be like. Are roommates really only an option until you find something better (a family or relationship of your own choosing, living by yourself because you can afford it)? Does this help explain why Americans have such big dwellings compared to much of the world (they need space to get away from others who live in the same residence)?

Solving traffic problems by developing resilient roads

A new study suggests cities and regions should think about their whole network of roads as resilient rather than focusing on main arteries:

In a paper published Wednesday in the journal Science Advances, Maksim Kitsak, associate research scientist in the Department of Physics and Northeastern’s Network Science Institute, and his colleagues examine the resilience and efficiency in city transportation systems. Efficiency refers to the average time delay a commuter would face annually due to traffic. Resilience is the ability of road networks to absorb adverse events that fall outside normal daily traffic patterns…

“What we show is actually these two measures are not really correlated with each other,” Kitsak said. “One would think that if the city is bad for traffic under normal conditions, it would be equally bad or worse for traffic under additional stress events, like severe weather. But we show that is not quite the case.”

For example, the study found that the Los Angeles transportation network—while inefficient on a daily basis—doesn’t suffer much from adverse events. The road systems are resilient. They function more or less the same regardless of unforeseen incidents…

Why is the City of Angels more resilient than the City by the Bay? Kitsak said there are many factors that influence transportation resiliency, but one of the most important ones is the availability of backup roads. Los Angeles has many, while San Francisco does not. San Francisco also relies heavily on bridges, which separate the city from other parts of the Bay Area where many commuters live.

This is more evidence that simply adding lanes to major highways or even constructing more major roads is not necessarily the way to go to solve traffic and congestion issues. All the roads (plus other transportation options) work together in a system or network.

Speaking of Los Angeles, this reminds me that the region can illustrate both the good and bad of having a more resilient road network. On the good side, concern about potential Carmageddon and Carmageddon 2 were overblown as the closing of a major highway for repairs was not as disruptive as some thought. On the flip side, a few years ago some Los Angeles residents complained about Waze rerouting cars through their quiet neighborhood to avoid backups on the main roads.

Finally, this study could also be related to claims by New Urbanists that the best option for laying out roads and space is on a grid system. Grids allow drivers and other easy ways to get around problem spots. In contrast, subdivisions (common in suburban areas) that include quiet and occasionally winding residential roads that dump onto clogged main arteries do not contain many alternatives should something go wrong on the main roads.

So is the trick in the long run to create a resilient road network within a region that is not totally dependent on cars? Los Angeles might come up looking good in this study but not everyone would agree that sprawl and lots and driving is desirable.

Successful Naperville also linked to stressed out teenagers

Naperville is not the only wealthy suburb to experience issues related to anxiety. Here is how one expert describes how community success can be related to worries:

Michelle Rusk, former president of the American Association of Suicidology, said when it comes to community pressure placed on teens to succeed and families to maintain the idealized “white picket fence” life, little has changed since she grew up in Naperville in the 1970s and ’80s…

Experts who work with Naperville students say they are treating more children experiencing signs of distress at a younger age…

Growing up in Naperville, Rusk, formerly known as Michelle Linn-Gust, said she heard stories of big houses with empty rooms because the owners couldn’t afford to furnish them or men who left their wives because they felt they weren’t making enough money.

People move to Naperville because it’s recognized as a great place to raise a family, but maintaining that image is challenging enough for adults let alone kids, she said.

In the 1990s, historian Michael Ebner argued Naperville was a “technoburb” – a suburb with a high number of high-tech and white-collar jobs – and this was accompanied by the development of high-performing schools. Naperville was not always like this; before the 1960s, Naperville was just a small town surrounded by farms.

But, is there a way to get out of this spiral of wealth, success, and anxiety and suicides? As Rusk noted above, Naperville is attractive in part because of its high-achieving environment. In communities like this with residents ranging from the middle-class to upper-class, families want only the best for their kids. Would residents and others be willing to give up some of the success to have better lives?

More evidence of “peak millennial” reached in major American cities

Time suggests 2016 Census data shows a number of American cities have plateaued in terms of millennial residents:

After years of growth, the population of millennials in Boston and Los Angeles has fallen since 2015, with more young people leaving the cities than arriving last year, according to the latest Census data. And millennial growth has slowed in large hubs like Chicago, New York and Washington, D.C.

Dowell Myers, professor of demography at the University of Southern California, first suggested in 2015 that cities would begin to see declines in millennials. With the largest birth group turning 27 this year, Myers says it’s only a matter of time before millennials head to the suburbs for more space.

To see which cities have reached “peak millennial” — a term Myers coined —we analyzed a decade of Census data through 2016. We found that while tech hubs like San Francisco and Seattle are still drawing young people, large East Coast cities, like New York and D.C., are fast approaching peak millennial, with plateauing populations of those born between 1980 and 1996. And then there are cities like Boston, which already appear to have reached their peak. Boston lost roughly 7,000 millennials in 2016, after a record high of 259,000 the previous year…

But they won’t live with roommates forever, Myers says. Eventually, he expects millennials to follow the generations before them and move to the suburbs. “They’re waiting for the recovery to happen,” he says “for new housing and job opportunities open up — so they can move out.”

If this continues, cities will have to think about how to continue to grow their populations. And cities generally do not want any residents; they desire professionals and high-income earners who can contribute to their tax base. But, to some degree they are fighting against demographics as household sizes have shrunk in the United States and birth rates have been steady or declined slightly since 1990. Perhaps their best bet these days is to attract highly-skilled immigrants but this may be an uphill battle as well considering national conversations about immigration, competition between cities, and the significant number of immigrants to the United States that move directly to the suburbs.

Read earlier posts on this topic here and here.

What social level should help better protect Illinois pedestrians in crosswalks?

The Daily Herald did an “informal study” of using crosswalks in the suburbs and the results were not good for pedestrians:

Daily Herald journalists conducted 49 tests of crosswalks not connected with stop signs or traffic lights in Cook, DuPage, Kane and Lake counties in November and December. Among the findings in the informal study:

• In 20 percent of tests, drivers whizzed through crosswalks despite a reporter either standing or walking within the striped area.

• Walkers were temporarily stranded in the middle of crosswalks 12 percent of the time as traffic continued without allowing them to reach the other side.

• One reporter on a busy stretch of Central Road in Mount Prospect waited more than 10 minutes while at least 99 vehicles surged through the crosswalk at Emerson Street until a vehicle stopped. It took more than 99 vehicles until it was safe for the reporter to proceed.

• Ninety percent of the time, traffic continued through crosswalks without heeding people on the curb.

Illinois’ nuanced law saying cars can continue through crosswalks until a pedestrian has both feet in the crosswalk is pure “Catch-22,” widower Eric Jakubowski of Mount Prospect thinks.

There are various levels that could be blamed for these issues:

  1. Local government. Why not put more stop signs or traffic lights in that would give pedestrians more help? (Easy answer: drivers do not want the flow of traffic impeded.) My own anecdotal evidence also suggests these traffic devices are also not guarantees for the safety of walkers, joggers, and bicyclists.
  2. Local law enforcement. Why is this law not enforced more? It reminds me of the cell phone laws in Illinois that are rarely enforced (and some communities have basically said as much).
  3. Pedestrians. Are they aggressive enough in stepping out into the street? Of course, one could hardly blame them as you often have to step out into traffic and catch the eye of drivers.
  4. State officials. Why not clarify the law so that pedestrians come first and also impose steeper penalties for lack of compliance?
  5. American society. Why must we privilege driving so much? And the suburbs are particularly designed around cars where people often have to go several miles to reach basic needs. Pedestrians slow down traffic and suburbanites dislike traffic. Different approaches to community life and urban design could help address these issues.

All of this is the case when many would suggest Americans should walk more for their own health as well as for building community.

Three questions for political leaders as suburbs offer key to 2018 elections

The suburbs may continue in 2018 to be the true political battlegrounds in the United States:

The mounting backlash to President Trump that is threatening his party’s control of Congress is no longer confined just to swing districts on either coast. Officials in both parties believe that Republican control of the House is now in grave jeopardy because a group of districts that are historically Republican or had been trending that way before the 2016 election are slipping away…

From Texas to Illinois, Kansas to Kentucky, there are Republican-held seats filled with college-educated, affluent voters who appear to be abandoning their usually conservative leanings and newly invigorated Democrats, some of them nonwhite, who are eager to use the midterms to take out their anger on Mr. Trump.

“If you look at the patterns of where gains are being made and who is creating the foundation for those gains, it’s the same: An energized Democratic base is linking arms with disaffected suburban voters,” said Mayor Rahm Emanuel of Chicago, who as a member of Congress in 2006 helped Democrats win back the House. “The president’s conduct has basically given voters this permission slip to go against the Republicans.”…

The suburban revolt, which began in a handful of little-noticed special elections and then exploded last month in governor’s and state House races in Virginia, was on display again on Tuesday in Alabama, where Doug Jones, a Democrat, claimed a stunning Senate win thanks to African-Americans and upscale whites.

This is not a new thing to watch: the suburbs have contained the real swing voters for at least the last few election cycles. These voters in middle suburbs, between inner-ring suburbs and the exurbs, can be swayed by either party depending on the situation.

A few thoughts about the upcoming 2018 elections:

  1. While this almost certainly means a lot of money will be spent in these districts, it will be interesting to watch how many political leaders visit such locations. For example, if you are a Democratic leader trying to woo voters in DuPage County (who voted pretty strongly for Hilary Clinton in what was considered a solidly Republican county), will you actually visit places like Villa Park and Carol Stream or will you stick to Chicago and hope you get enough attention in the big city?
  2. In wooing suburban voters, will sprawl be an issue on the table? Many metropolitan areas have large regional problems including inequality across communities (the residential and class segregation of big cities has been replicated to some degree in suburban areas) and congestion. Will Democrats push for more metropolitan initiatives and reducing the growth further out from the city or is this a losing pitch in a country where many Americans still seem to like the idea of a suburban home?
  3. How will Democrats approach wealthier suburban voters in blue states that have significant state issues? I’m thinking of places like Connecticut, New Jersey, and Illinois that have massive budget issues. What can Democrats offer on a national platform that would suburban voters could find attractive for helping their state? Or how would suburban candidates address affordable housing, another major issue in many regions, and who exactly should help or sacrifice to help such housing be built?

Foreclosure crisis to come in Puerto Rico

Even as the foreclosure crisis seems to have passed in recent years on the mainland, Puerto Rico is set to see foreclosures galore in the coming months:

Now Puerto Rico is bracing for another blow: a housing meltdown that could far surpass the worst of the foreclosure crisis that devastated Phoenix, Las Vegas, Southern California and South Florida in the past decade. If the current numbers hold, Puerto Rico is headed for a foreclosure epidemic that could rival what happened in Detroit, where abandoned homes became almost as plentiful as occupied ones.

About one-third of the island’s 425,000 homeowners are behind on their mortgage payments to banks and Wall Street firms that previously bought up distressed mortgages. Tens of thousands have not made payments for months. Some 90,000 borrowers became delinquent as a consequence of Hurricane Maria, according to Black Knight Inc., a data firm formerly known as Black Knight Financial Services.

Puerto Rico’s 35 percent foreclosure and delinquency rate is more than double the 14.4 percent national rate during the depths of the housing implosion in January 2010. And there is no prospect of the problem’s solving itself or quickly.

Even before the storm, Puerto Rico was mired in a severe housing slump. Home prices over the past decade have fallen by 25 percent, and lenders have foreclosed or filed to foreclose on 60,000 home loans, according to the Puerto Rico state court system. Last year, there were 7,682 court-ordered foreclosures — a roughly 33 percent increase from 2007. Some 13,000 foreclosure cases are pending, Black Knight estimates.

Without an easy fix and knowing that this is a longer-term issue that may not be solved with mild economic improvement, it will be interesting to see what happens. Some questions this raises:

  1. Will Puerto Rico and the involved parties (residents, mortgage lenders, local governments) be treated the same as mainland parties during the late-2000s housing slump?
  2. What lessons learned from the late 2000s will be applied here and can those lessons demonstrably help lessen the impact over time?
  3. Will institutional buyers of distressed properties see Puerto Rico as a potential gold mine? If so, how does this then affect Puerto Rico in the next few decades?
  4. What is a long-term plan to help boost the economic prospects of the island?

There are many ways this could play out but one would hope that since we have seen some of this before, the effects do not have to be so bad.