Archive for August, 2008

Shut Up and Drive

Often when I’m driving, I find myself entering a difficult situation — a tricky lane-change, an unfamiliar turn — and I’ll actually ask my passenger (typically my wife) to essentially stop talking for a moment (or they will voluntarily do so) as the situation resolves itself. This, of course, is one of the major problems with talking on a cell phone versus talking with a passenger: Not only are they providing another set of helping eyes, but they can sense when would be good for them to modulate their conversation in some way, whereas the person on the other end of the cell-phone will seemingly keep droning on, taking away from the driver’s workload.

This point, fairly well established by now, is made again in a new study (PDF here) by Samuel G. Charlton, University of Waikato, Hamilton, for Land Transport New Zealand. The study, as others have, found that drivers on cell phones had slower reaction times — yet drove at higher average speeds — than drivers with passengers as they went through a number of hazards in a driving simulator. Interestingly, this study also featured a person on a cell-phone who was not present in the car yet had access to the driver’s view, so they have a passenger-like view of the road.

The key to performance seemed to be what the paper calls “conversation suppression,” i.e., knowing when to shut up: “Passengers talking to drivers made shorter utterances, had more frequent pauses and were more likely to be talking about the upcoming hazard than cellphone conversors. Drivers and their cellphone conversors tended to make longer utterances than the other participants, were less likely to mention the hazards, had the poorest recall of the hazards, and had the highest crash rate.” Even when the remote cell phone conversor had access to the driving scene, they didn’t tend to adjust their conversation as much as the passenger did — maybe there’s just something ineluctable in actually being there.

The study includes one other interesting, but to my mind a bit strange, finding. Drivers did a bit better on the cell phone when an automated hazard alert message “beeped through” their call, alerting them to some upcoming traffic hazard. This gave the driver the necessary cue to break off the conversation a bit. These alerts would presumably be triggered by some sort of beacons in the road infrastructure, particularly at hazardous points. But, of course, the thing about driving is one never knows when it’s going to become hazardous, and it certainly isn’t always at the accident “black spots” (which are often just statistical aberrations in any case). There are innumerable issues here, from a driver’s over-reliance on the hazard warning system, to the idea that they may be brought back “into the loop” with not enough time to react and not enough knowledge of the situation.

Posted on Tuesday, August 12th, 2008 at 9:34 pm by: Tom Vanderbilt
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Posting will again be a bit interrupted, as I’m heading off to the West Coast swing of the tour (there are no bookstore events, mind you, just lots of media and some smaller talks). And I’ll also be blogging this week for Powell’s, the legendary Portland institution, whose many warrens of books I have idled amongst for hours…

Posted on Monday, August 11th, 2008 at 12:32 pm by: Tom Vanderbilt
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Traffic Quiz

Over at John Tierney’s always entertaining and edifying “Tierney Lab,” there’s a short quiz of curious traffic facts and phenomena — as well as an essay contest:

“What could be done to improve traffic in New York City?

You can suggest anything except for two obvious answers: congestion pricing (the favorite of traffic engineers and economists, but not politicians) and more police officers to enforce traffic laws. We’re looking for creative solutions to specific problems like cars blocking intersections, and for general ideas to improve traffic flow.”

The winner (there are loads of interesting stuff already I’ve yet to fully go through) gets a signed copy of the book.

Posted on Saturday, August 9th, 2008 at 5:30 pm by: Tom Vanderbilt
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This Sunday’s New York Times Book Review

There’s a fantastic review of Traffic, by Mary Roach, in the Book Review that I usually get tomorrow morning. If you check out the review, you’ll understand my elation (she asks — asks! — for more traffic history). That it’s on the cover adds to the delight, of course. The graphic by Joon Mo Kang is absolute brilliance.

Posted on Friday, August 8th, 2008 at 5:53 pm by: Tom Vanderbilt
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Given that I just mentioned Julio Cortazar and Godard’s Weekend, I couldn’t help linking to this fantastic, very untraditional piece from the Los Angeles Times, on France’s colossal August traffic jams. It has it all: Excerpts from Cortazar, unforeseen behavior at toll plazas, and only-in-France traffic patterns, like this:

“Many of the difficult stretches correspond to places where there are great wines,” he said. “You start the day with the traffic jams in Burgundy and then move south through the wines of the Rhone Valley.”

And this intriguing tidbit:

“Traffic is a bit like crime, Arnold said. It seems worse partly because techniques for measurement are more advanced, increasing public awareness.”

It makes you wonder why more French don’t vacation in July…

Posted on Thursday, August 7th, 2008 at 4:19 pm by: Tom Vanderbilt
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Traffic Report

I’ve been experiencing a lot more airport congestion than actual road traffic lately — about to leave Toronto for Atlanta. I had a too-brief swing through Chicago, where the highlight for me was the chance to sit down, for two hours, with Milt Rosenberg, at WGN. Milt, for the uninitiated, is a Chicago institution (like WGN itself), a University of Chicago psychologist by day and, at night, the voice of “Extension 720,” a great, intimate, last-of-its-kind night show on which for the past three decades he’s talked to everyone from Norman Mailer to Henry Kissinger. Meeting Milt felt like a bit like walking into a Saul Bellow novel — U of C tweed with a dash of the exuberant vigor of the Chicago streets — and even before the interview we had a wide-ranging conversation that covered everything from Alfred Kazin (Milt’s an old Brooklyn-ite) to Chicago politics. Then, of course, we talked about traffic.

Also of note is that tomorrow I’ll be on NPR’s Science Friday, the great show hosted by Ira Flatow — if I don’t get stuck on Atlanta’s highways…

Posted on Thursday, August 7th, 2008 at 3:28 pm by: Tom Vanderbilt
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My Top 10 Favorite Traffic Films

While writing the book, there were a number of films that stood out for being particularly emblematic of the traffic experience. I’m not talking road films here (no Two-Lane Blocktop or Vanishing Point), but traffic films, movies that reveal interesting glimpses of the strange social dynamics of traffic (and they don’t have to be particularly good, just interesting traffic-wise). I’m curious to hear other favorites from readers.

1. Motor Mania. Directed by Jack Kinney, 1950.

Originally part of a driving safety instructional film, this Walt Disney short really does a lovely job of describing motorist sociopathy. Everyman (or, er, Everydog) Goofy begins the film as “Mr. Walker,” a nice person who “wouldn’t step on an ant.” In his car, he becomes “Mr. Wheeler,” suddenly terrorizing his former walking comrades, questioning the skills and rights of way of other drivers, and generally acting like a monster. Per minute this really packs the most traffic wisdom. A bit hard to get nowadays, but through Disney Educational Productions you can buy a DVD that also includes a few other films (including Freewayphobia, about driving on the then new superhighways).

2. Trafic. Directed by Jacques Tati, 1971.

With a title like Trafic, how could you not like this one? This overlooked work from French master Tati is hardly his best (it’s no Hulot or Playtime), but there’s enough of the Tati touch to make this one worthwhile. “I’m simply trying to show that individuals change when they’re behind the wheel of a car,” Tati said, and in one of the film’s funniest segments, he presents a succession of shots of oblivious French drivers languidly picking their noses in the perceived anonymity of their cars (people who actually research drivers with in-car cameras have found this happening after the first week or so of the camera being inside the car). This film has been unavailable for a long time (I’ve got a weird Swedish edition), but it’s recently been reissued by Criterion.

3. Falling Down. Directed by Joel Schumacher, 1993.

I can never really make it through the whole thing these days, but I do love the bit that sets off Michael Douglas’ whole repressed-guy-in-a-tie silent majority crusade of rage: A traffic jam. It’s hot, he’s stuck, the merge signs are blinking, a fly in his car is bothering him, the “How’s My Driving? Dial 1-800 EAT-SHIT” bumper stickers accost him — even a Garfield stuffed animal seems to stare back maniacally. He does what many of us have probably wanted to do at some point — just leave the car and walk away.

4. Weekend. By Jean Luc-Godard, 1967.

As the story goes this is actually partly inspired by Julio Cortazar’s great story “The Southern Thruway,” about an epic traffic jam that gradually turns into a sort of society. This story itself begins with an epigraph from L’Espresso magazine: “Sweltering motorists doe not seem to a have a history… As a reality a traffic jam is impressive, but doesn’t say much.” I beg to differ! Anyway, Godard’s black comedy features, famously, the epic, slow drive down a French highway full of carnage, people playing games, arguing, etc. The soundtrack is horns but no one seems to actually be blowing their own. A bit dated these days but worth it for the cool Citroens and Puegots alone…

5. Office Space. Directed by Mike Judge, 1999.

Funny in all sorts of ways, but particularly for my purposes for the opening scene. Peter (Ron Livingston), frustrated by the constant stop and go of his commute — so slow that he observes an old man pushing a walker pass him by on the sidewalk — sees the other lane moving faster. He manages to change lanes, slamming on the brakes as his lane suddenly freezes up. His former lane, of course, begins to move ahead. This is the one of the classic issues in congestion, and is discussed in the book (you can watch a clip here).

6. LA Story. Directed by Mick Jackson, 1991.

Full of whimsical looks at LA traffic life, sort of like Crash without the heavy-handedness. My favorite scene is when Steve Martin gets in his car to go to his next door neighbor’s house, but there’s other good moments, like his crazy shortcuts to get to work, or the ongoing metaphysical conversation with the “changeable message signs” that give traffic info to LA drivers — as if CALTRANS had been replaced by a higher authority (not that there is one for the average LA driver).

7. National Lampoon European Vacation. Directed by Amy Heckerling, 1985.

Not as good as the original and really doesn’t hold up at all anymore (if it ever did), but memorable for one scene: Chevy and family entering a roundabout in London and finding themselves unable to leave. Round and round they go, until night falls and Chevy is babbling uncontrollably. Unfortunately, this is the sort of thing people still think of when they hear the word ’roundabout,’ but modern roundabouts — and please repeat after me — are safer and handle traffic flows better than conventional four-way signalized or stop-sign marked intersections.

8. Singles and Mission Impossible: III (tie).

I lump these together because they both feature characters who are transportation engineers (one an aspiring, and the other, well it’s only his cover, he’s really a spy, but still…). Traffic engineers are hardly the next architects when it comes to giving movie characters ostensibly sexy and easy-to-depict careers (he’s carrying a tube of blueprints — whoa, he’s an architect!), so I’m always interested when they appear. In Cameron Crowe’s Singles, Campbell Scott plays Cliff, an idealistic engineering student who’s obsessed with a “super-train.”

Here’s his pickup line to a fellow single: “Let me ask you a question. You think about traffic? Because I do, constantly. Traffic is caused by the single car driver. Single people get in their cars every morning. They drive and wonder why there’s gridlock.” (Note the double meaning of the word “single”!)

In MI III, we get the pleasure of hearing Tom Cruise drop this line at a cocktail party: “You hit the brakes for a second, just tap them on the freeway, you can literally track the ripple effect of that action across a two-hundred-mile stretch of road, because traffic has a memory. It’s amazing. It’s like a living organism.” And then leaves to mix a drink or something, leaving his guests to digest his feverish musings.

9. Rain Man and Midnight Cowboy. There are two great Dustin Hoffman in the crosswalk moments, and I find each striking for they say about traffic. The first, in Midnight Cowboy, is the famous Ratso Rizzo “I’m walkin’ here” tirade, directed against a taxi cab that has violated his right of way. Indelibly funny stuff, the stuff of ring-tones, and it’s something every New Yorker has wanted to shout at some point (and more New Yorkers, I must point out, are killed crossing with the light than against). The second, in Rain Man (directed by Barry Levinson, 1988), finds Hoffman as the autistic savant Raymond. He’s walking in a crosswalk in a small town when suddenly the light flashes to “don’t walk.” Of course, in traffic law this only means do not enter the crosswalk, but to Raymond’s rigidly programmatic way of thinking, he takes this as a command to stop directly where he is, until he’s retrieved by Tom Cruise (not playing a traffic engineer in this one). This moment in its own way to some of the subtle problems of excessive traffic signs and signals in that an over-reliance on their instructions can see us rather losing the ability to think for ourselves, arguably placing us in new dangers.

10. Sunrise. Directed by F.W. Murnau, 1927.

I was going to go with the otherwise fairly forgettable Starman here for its scene in which the alien, learning the customs of Earth, finds out that the yellow signal at a traffic light means go “really fast,” but I wanted to end on a more lyrical note with this classic, hugely influential silent film. The rush of city traffic is a virtual character in the film, but in one famous moment, the husband and wife cross a large city square, and as the cars and trolleys and horses bear down upon them, they stop to kiss and magically fade into the traffic itself in an intensely memorable scene. Alas, if only traffic were so simple…

Posted on Tuesday, August 5th, 2008 at 10:52 pm by: Tom Vanderbilt
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Apologies for the hectic postings… I’m now in Chicago, having had earlier today a great on-air chat with the excellent Kerri Miller at Minnesota Public Radio and a whirlwind tour of the Twin Cities’ traffic highlights with Roadguy.

But I wanted to put in a quick word — and this is the only time I’ll do some salesmanship here! — for my wife’s novel, Don’t You Forget About Me, just out from Villard (her name, by the way, is Jancee Dunn). I know, I know, this is hardly an unbiased recommendation, but it’s really a charming, funny, and moving read — but if you don’t believe me check out these unbiased words from the Los Angeles Times or the nice writeup in People magazine this week (sorry no linkage), or the other words of praise found at her blog. So, please, run, folks, do not walk, to your local bookstore and snap it up. And see if you can find the character in the book that’s loosely modeled on me!

Posted on Tuesday, August 5th, 2008 at 6:25 pm by: Tom Vanderbilt
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Sounding One’s Own Horn, Part IV

Loads of further great reviews have come in, including some weigh-ins by some real heavyweights…

In the WSJ, James Q. Wilson, professor emeritus at UCLA (to name just one of his identities), says Traffic is a “a fascinating survey of the oddities and etiquette of driving.”

Over at the New Republic, meanwhile, Harvard University urban economist Edward L. Glaeser calls the book “a smart and comprehensive analysis of the everyday act of driving” and “a balanced and instructive discussion on how to improve our policies toward the inexorable car.”

The Dallas Morning News, in a review by Alexandra Witze, of one of my favorite journals, Nature, observes, “It is a rare book that presumes to explain so many mysteries of human behavior, such as why “park sharks” circle endlessly looking for a space, why rush hour seems to keep getting worse and why every other driver on the road is an idiot. Remarkably, Traffic succeeds in all three, and much more besides…. [t]his is no pop-psychology treatment of driving habits, but a deeply researched, technical insight into the nature of how people interact on the roads.”

Ben Wear, transpo writer for the Austin-American Statesman, offers this: “The book, improbably, is funny, consistently readable and, even for someone like me who thinks about this stuff a lot, enlightening. Over and over, Vanderbilt takes on assumptions we all have about the road and turns them on their head. Having done exhaustive research — he seemingly talked to every traffic engineer in this and the other hemisphere, visited traffic nerve centers and test sites and read hundreds of obscure treatises on traffic phenomena — Vanderbilt writes with a bracing authority.”

Posted on Monday, August 4th, 2008 at 9:19 pm by: Tom Vanderbilt
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50,000 Missing Trips

I’ve had Minneapolis on my mind lately, not just because I’ve just arrived to the city, but because I’ve been reading a fascinating new paper (available here) on the large-scale traffic effects of the tragic collapse of the I-35W bridge last year.

The paper, “The Traffic and Behavioral Effects of the I-35 W Mississippi River Bridge Collapse,” is by David Levinson, Henry Liu, Shanjiang Zhu, and Kathleen Harder (Levinson, whose “Transportationist” blog is a daily must-read of mine, also figures in a number of ways in Traffic).

This paper tackles one of those fascinating traffic issues that have come up now and again in different ways: What happens when, for some reason or another, whether on purpose or not, sections of road are removed? What effects do these “network disruptions” have on the entire system? In this particular case, the paper notes, I-35W carried some 140,000 people across the bridge every day. Neighboring bridges, in the wake of the new patterns that seem to have asserted themselves a year later, are carrying only 90,000 more cars. What happened to the others? Judging by the survey results collected here, the majority that were affected did one of two things: They changed their route, or they changed the time they left home. And the rest, it would appear, simply did not make trips.

This raises interesting questions about the traffic stream during peak hours. Do all those people need to be there, or is their desire to be there equal (e.g., would they pay a premium to make that trip during that time)? It also shows the amazing flexibility and cleverness people have in staking out new routes and strategies during these disruptions. When New York City suddenly had a “plus three” car occupancy requirement in the wake of the transit strike a few years back, we were all suddenly instant car-poolers. The new routing that Minneapolis drivers quickly took on invokes a classic principal from the world of transportation: Wardrop’s equilibrium. This states (and I’m simplifying here) that a single driver cannot, by his or her own action, find a better route than the one they are on. As a New Yorker, I sort of view this in a Yogi Berra kind of way: If there was a faster way to go, everyone else would be slowing it down already.

The missing capacity in the system, the authors note, is not without costs — to the economy, to people’s individual desire to travel, to individual’s commute times. But, they add, “travelers exhibited great flexibility in dealing with the changed traffic pattern.” Some of this was aided through novel infrastructure tweaks (like adding new lanes on other bridge crossings by simply making the existing lanes more narrow), but much of it just came down to individual decisions, and people’s willingness to change. The two words in the title say it all: Traffic is behavior. In any case, the work is ongoing and promises to yield more insights.

Posted on Monday, August 4th, 2008 at 8:21 pm by: Tom Vanderbilt
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The Caldecott Tunnel Problem

I recently met a kindred spirit, on the other coast, who had been stewing over a type of problem similar to that which had launched my own multi-year investigation into the strange social dynamics of traffic: Merging.

Cynthia Gorney, who teaches at the University of California-Berkeley journalism school and writes for National Geographic and many other places (this after an award-winning career at the Washington Post), kept stumbling upon a daily drama at the Caldecott Tunnel, in Northern California (pictured above). There were people who would dutifully line up on the narrow approach the tunnel entrance, and then people who would “sidezoom” along a frontage road, veering back into the active lane at the last moment. The whole thing is described in her insightful, and very funny New York Times Magazine article today, titled “The Urge to Merge.”

Her merging problem is a distinct problem from the “early” and “late” merge I describe in my book, which in the specific case I was discussing only relates to construction work zone merges in which two lanes are dropping to one, and signage warns something like “merge right, one mile.” Caldecott, as far as I can surmise, as I haven’t experienced it myself, is a strange situation; one, because unlike a temporary construction zone situation, the same thing repeats itself every day at Caldecott — the dilemma is built into the very landscape — and much of the traffic on it is presumably daily commuters (and indeed, an “evolutionary stable strategy” appears to have taken hold by which, according to Gorney’s reckoning, two-thirds of people line up and one-third side zoom). Two, the lane that the side-zoomers are using isn’t technically, as in my situation, a lane that was going to become inactive (and thus the people using it as a sort of merging reservoir weren’t holding up traffic going elsewhere). It is spare capacity to the extent the frontage road is not used very often, but then one wonders if it should just be turned into a de facto merging bay, and marked accordingly. Rather than stigmatizing “cheaters” and upsetting the prevailing order, this would institutionalize the practice, thus, presumably, easing the social tensions.

But the fact that the geometries and psychologies of Gorney’s own merge problem could yield a long article, full of interesting traffic tidbits and theories, speaks to the complexities of traffic. Merging prescriptions, it seems to me, are like medicine: Use only where directed (and watch out for side effects). The people in New York who use an active lane to drive to the front of the queue on the FDR to jump onto the onramp for the Brooklyn Bridge (dangerously stopping for a moment in the middle of that active lane, forcing everyone in their lane to then merge left, at relatively high speeds) should receive a good old-fashioned Singaporean caning, IMHO.

And of course it’s really just more than merging at stake here. These sorts of tensions strike right to the heart of American culture. Gorney found herself musing at the merge point, “this is the problem with modern American capitalism, really, this anti-aristocratic all-men-are-created-equal narrative we pretend to cherish while simultaneously celebrating the individual’s right to do whatever advances his own interests without technically breaking the law.” I think something similar may underlie the left-lane-is-for-faster-traffic dynamic on U.S. roads: It’s a good idea in practice, but someone’s always going to want to go faster, and that person’s rights are going to mash up against the guy who’s already going pretty damn fast, is exiting on the left soon anyway, and thinks he also has a right to be in the lane he’s in.

I later emailed Gorney a fragment I had come across in Robert Axelrod’s classic The Evolution of Cooperation, talking about experimental war games and strategy: “When the players will never meet again, the strategy of defection is the only stable strategy.” Isn’t this really the heart of traffic — there’s little incentive for doing the right thing when your good deed won’t be recorded in future rounds by your fellow game players. Perhaps, as the WOPR computer put it in that classic of 80s geekdom War Games, “the only winning move is not to play.”

In any case, I recommend the article highly, and not just because it contains the words “Vanderbilt’s book is terrific…” Follow the link or check out the text after the jump, and Happy merging!

Posted on Sunday, August 3rd, 2008 at 8:04 am by: Tom Vanderbilt
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The Box, Blocked

One of the interesting things I gleaned from Jeffrey Kluger’s far-reaching book Simplexity is the observation, via NYC traffic guru Sam “Gridlock Sam” Schwartz, that during the worst of Manhattan’s traffic paralysis, the dreaded “gridlock,” some 60 percent of the city’s total road capacity would be available. “All of the action,” notes Kluger, “takes place in the intersections.”

One of the reasons, of course, is the dreaded condition of “blocking the box,” wherein drivers get caught out in the intersection on a red signal, thus obstructing the competing flow. This is fairly chronic behavior: One study found that at nine of Manhattan’s ten busiest intersections, some 3000 vehicles blocked the box over a nine hour period.

I kept experiencing this on a recent approach to the Holland Tunnel during the evening peak. As I stared at the large signs, warning of points off the license and fines, I found myself wondering if there were any more novel solutions beyond mere punishment (and there have been calls to increase ticketing of box-blockers). Was there a Nudge-style solution? I’m not sure the recent Nudge for speed reduction would work here, but maybe there’s something else?

While we’re on the subject of carrots rather than sticks, I was intrigued by this notice from the Times of India. On August 1st, in Hyderabad, drivers who obey the laws will be rewarded with a favorite Indian sweet: ” To get the lip-smacking dood peda, all you have to do is wear a helmet, carry original driving licence, RC, PUC certificate and insurance papers.” I dunno, maybe NYC traffic cops could give out Jolly Ranchers at intersections to drivers who don’t stray into the box?

Posted on Friday, August 1st, 2008 at 2:57 pm by: Tom Vanderbilt
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“Shared Space” in Boston; Weird One-Way Signs in D.C.

Just back home and going through all the good mail that’s been coming in after Week One of the tour. I had two trivial observations based on recent trips to Boston and D.C. In Boston, don’t know the particular address, I saw an interesting sign that said “Shared Space,” 10 mph. This is a European idea I haven’t seen previously expressed in the U.S., at least so literally. Anyone know its origins?

Also, while on the traffic signs tip, what’s up with the weird, yellow one-way signs in D.C., with their extremely small indications of what times the streets are one way and when they’re not? They seemed hard to scan while deciding whether or not to turn into a street. And is it just me or do they almost look like advertising notices?

Posted on Friday, August 1st, 2008 at 2:35 pm by: Tom Vanderbilt
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Traffic Tom Vanderbilt

How We Drive is the companion blog to Tom Vanderbilt’s New York Times bestselling book, Traffic: Why We Drive the Way We Do (and What It Says About Us), published by Alfred A. Knopf in the U.S. and Canada, Penguin in the U.K, and in languages other than English by a number of other fine publishers worldwide.

Please send tips, news, research papers, links, photos (bad road signs, outrageous bumper stickers, spectacularly awful acts of driving or parking or anything traffic-related), or ideas for my Transport column to me at:

For publicity inquiries, please contact Kate Runde at Vintage:

For editorial inquiries, please contact Zoe Pagnamenta at The Zoe Pagnamenta Agency:

For speaking engagement inquiries, please contact
Kim Thornton at the Random House Speakers Bureau:

Order Traffic from:

Amazon | B&N | Borders
Random House | Powell’s

U.S. Paperback UK Paperback
Traffic UK
Drive-on-the-left types can order the book from

For UK publicity enquiries please contact Rosie Glaisher at Penguin.

Upcoming Talks

April 9, 2008.
California Office of Traffic Safety Summit
San Francisco, CA.

May 19, 2009
University of Minnesota Center for Transportation Studies
Bloomington, MN

June 23, 2009
Driving Assessment 2009
Big Sky, Montana

June 26, 2009
PRI World Congress
Rotterdam, The Netherlands

June 27, 2009
Day of Architecture
Utrecht, The Netherlands

July 13, 2009
Association of Transportation Safety Information Professionals (ATSIP)
Phoenix, AZ.

August 12-14
Texas Department of Transportation “Save a Life Summit”
San Antonio, Texas

September 2, 2009
Governors Highway Safety Association Annual Meeting
Savannah, Georgia

September 11, 2009
Oregon Transportation Summit
Portland, Oregon

October 8
Honda R&D Americas
Raymond, Ohio

October 10-11
INFORMS Roundtable
San Diego, CA

October 21, 2009
California State University-San Bernardino, Leonard Transportation Center
San Bernardino, CA

November 5
Southern New England Planning Association Planning Conference
Uncasville, Connecticut

January 6
Texas Transportation Forum
Austin, TX

January 19
Yale University
(with Donald Shoup; details to come)

Monday, February 22
Yale University School of Architecture
Eero Saarinen Lecture

Friday, March 19
University of Delaware
Delaware Center for Transportation

April 5-7
University of Utah
Salt Lake City
McMurrin Lectureship

April 19
International Bridge, Tunnel and Turnpike Association (Organization Management Workshop)
Austin, Texas

Monday, April 26
Edmonton Traffic Safety Conference
Edmonton, Canada

Monday, June 7
Canadian Association of Road Safety Professionals
Niagara Falls, Ontario

Wednesday, July 6
Fondo de Prevención Vial
Bogotá, Colombia

Tuesday, August 31
Royal Automobile Club
Perth, Australia

Wednesday, September 1
Australasian Road Safety Conference
Canberra, Australia

Wednesday, September 22

Wisconsin Department of Transportation’s
Traffic Incident Management Enhancement Program
Statewide Conference
Wisconsin Dells, WI

Wednesday, October 20
Rutgers University
Center for Advanced Infrastructure and Transportation
Piscataway, NJ

Tuesday, March 8, 2011
Ontario Injury Prevention Resource Centre
Injury Prevention Forum

Monday, May 2
Idaho Public Driver Education Conference
Boise, Idaho

Tuesday, June 2, 2011
California Association of Cities
Costa Mesa, California

Sunday, August 21, 2011
American Association of Motor Vehicle Administrators
Milwaukee, Wisconsin

Wednesday, October 26, 2011
Attitudes: Iniciativa Social de Audi
Madrid, Spain

April 16, 2012
Institute for Sensible Transport Seminar
Gardens Theatre, QUT
Brisbane, Australia

April 17, 2012
Institute for Sensible Transport Seminar
Centennial Plaza, Sydney
Sydney, Australia

April 19, 2012
Institute for Sensible Transport Seminar
Melbourne Town Hall
Melbourne, Australia

January 30, 2013
University of Minnesota City Engineers Association Meeting
Minneapolis, MN

January 31, 2013
Metropolis and Mobile Life
School of Architecture, University of Toronto

February 22, 2013
ISL Engineering
Edmonton, Canada

March 1, 2013
Australian Road Summit
Melbourne, Australia

May 8, 2013
New York State Association of
Transportation Engineers
Rochester, NY

August 18, 2013 “Ingenuity” Conference
San Francisco, CA

September 26, 2013
TransComm 2013
(Meeting of American Association
of State Highway and Transportation
Officials’ Subcommittee on Transportation
Grand Rapids MI



August 2008

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