Can the Right Music Get You Out of a Traffic Ticket?


I was driving down the road the other day with a fellow trainee, pointing out to him that the particular road along which we were driving always has police officers hiding out and catching people speeding. Just as I said that, sure enough, we saw a police car pull out with lights on and pull someone over.  My friend, Bill, said that he wondered if the song "Sweet Home Alabama" would work in Alabama. I asked him to elaborate.

My friend, who is from Rhode Island, explained that a couple of years ago he was speeding and got pulled over by a police officer.  He said that the song "Sweet Home Alabama" was on the radio and that somehow the officer let him off on a warning.  Some time later, he was pulled over again and had the song on his iPod.  In the time between being pulled over by the police officer and the officer walking up to his window, he pulled the song up on his iPod and left it on loud enough to be heard by the police officer, but not too loud.  Again, success.  He said this happened one more time just a couple of months ago in Florida and that he now always has at the ready a CD with the song "Sweet Home Alabama," just in case he gets pulled over again.

How Does the Value of Driving Differ Across States?

Michael Sivak, a transportation scholar at the University of Michigan whose work has appeared on this blog before, released a new study on inter-state variations in economic activity per unit of driving.  His findings are interesting and reflect significant differences in GDP per distance driven among U.S. states:

In 2011, the highest GDP per distance driven was in the District of Columbia ($30.04/mile, followed by Alaska, New York, Connecticut, and Delaware. The lowest GDP per distance driven was in Mississippi ($2.51/mile), followed by Alabama, New Mexico, Arkansas, and Oklahoma. The median value was $4.66/mile. In comparison, the standard federal reimbursement rate for fixed and variable costs of operating an automobile in 2011 was $0.51/mile.

From 1997 to 2011, the largest absolute increase in GDP per distance driven (with GDP measured in current dollars) was in the District of Columbia (+$14.95/mile), followed by Alaska, New York, Delaware, and Oregon. The smallest increase was in Mississippi(+$0.67/mile), followed by Alabama, Michigan. Florida, and New Mexico.

Autonomous Vehicles, Where Are You?



There are of course many barriers to get past before the world is ready for autonomous vehicles -- yes, there will be lawsuits of all kinds and yes, professional drivers all over will protest the loss of jobs and yes, there will be people who trust a human driver more than a computer driver -- but I do wouldn't be shocked if my grandchildren grow up in a world where "driving a car" seems like something that cavemen used to do.

Why Don't More Professional Drivers Use Traffic-Enabled GPS?

A couple years ago, when I first noticed the ability to overlay a traffic report on Google Maps on my iPhone, I assumed that the world of drivers -- especially people who drive for a living -- would take it up very quickly. In a place like New York, choosing a free-flowing route versus a congested route might save you 30 or even 60 minutes on an airport trip.

But I seem to have been quite wrong. In most instances when I take a taxi or hired car to/from an airport, the driver doesn't check any kind of device to see where traffic is heavy and where it's light, even though smartphones with map and traffic apps have exploded in the last couple of years. Once in a while, he'll tune in to the all-news radio station to get a spotty traffic update.

Therefore, I usually now check my traffic app as soon as I get in the car to see what routes are looking good and which are looking bad, and then relay that info to the driver. Why don't more professional drivers use traffic-enabled GPS?

Would You Help Your Kids Cheat to Get a Driver's License?

A reader named Ari writes from Israel:

Recently the Israel Government voted to change the minimum age for getting a driver's license. Here is a snippet from an article in Ha'aretz (headlined "Israel to Lower Driving Age, but Tack on Period of Mandatory Supervision"):
The earliest age to start driving lessons will remain 16 and a half. The period of driving accompanied by an adult will have to cover at least 50 hours, 20 of them on urban streets, 15 hours on inter-urban roads and 15 hours of driving at night. The novice driver will have to have an adult chaperone at all hours of the day during the first three months but only at night during the second three months. After the novice driver and the accompanying person sign a declaration that the accompanied driving requirement has been fulfilled properly, the new driver will be given a young driver’s license.
I'm curious as to how the honor system is going to work here. If my child's license were to depend on my declaration, what are the chances that I would fudge? How would the governing agency know? It seems to be unverifiable. I assume that there will be some internet-based form with a checkbox and maybe some number to fill in (number of hours driven night / day / rain / …) I believe that forcing a person to write his own declaration would make it more difficult for him to lie.

The Downside of More Miles Per Gallon: A New Marketplace Podcast

Our latest Freakonomics Radio on Marketplace podcast is called “The Downside of More Miles Per Gallon." (You can download/subscribe at iTunes, get the RSS feed, listen via the media player above, or read the transcript below.)

The gist: the Federal gas tax is a primary source of infrastructure funding but, politically, it has proven a hard tax to increase. Furthermore, because the tax is a fixed amount (18.4 cents per gallon) rather than a percentage, gas-tax revenues don't rise even when gas prices do -- as has been happening lately.

Even worse, as modern cars travel further on a gallon of gas (good news, right?), they contribute even less money for the roads they travel. And cars are going to get even more fuel-efficient.

So what's to be done? Some politicians want to get rid of gas taxes in favor of an increased sales tax -- which, Eric Morris argues, is a bad idea, since it shifts the burden to non-drivers.

Social Norms in Action

From a reader named Stephane:

Very recently I drove through a couple of small villages in the northwestern part of Belgium (near the border with France). A couple of road signs caught my attention. When you reach a village there's a sign (in Dutch) saying "here, X percent of the drivers stay within the speed limit." Then when you reach the next village there's the same sign except that the percentage is different. Usually it's around 90% (87% in one village, 91% in another, etc.).

I don't know how they collect the data or even if the numbers are real. I also wish I knew the trends, how often they change the signs, how many villages participate in this safety initiative, etc. Then I wondered: where does this idea come from? Have you heard of anything like this before? If yes, is this effective to slow cars down?

From Horse Power to Horsepower to Processing Power

Some thinkers make their reputations by focusing on social justice, economic progress, or global sustainability. I took the low road and went for horse manure. It was my article on filth, flies, and putrefying horse carcasses in the 19th century city that brought me to the attention of Dubner and Levitt and, for better or worse, to this site. FYI, the article is here.

If you do peruse it, you’ll see I ended with the hope that technology will bail us out of our transportation problems just like it bailed us out of those caused by the horse. At that time, a deus ex machina descended from the heavens to improbably solve the insoluble. The savior was known as the automobile, and as it went from obscurity to ubiquity in a few decades it banished the working horse—a primary mode of transportation for thousands of years—to oblivion.

There was only one problem with my call for a miraculous technological fix: I did not have the slightest idea what that technology would be.

Austin's New Toll Lanes

Traffic in Austin is a mess, mainly because the city is long and linear (east-west travel is made difficult by the topography). In increasingly long rush hours, traffic barely moves on either north-south freeway. To solve the problem, the city is adding one lane in each direction to one freeway, but there will be tolls on that lane. Moreover, the tolls will be variable — but not by time of day or day of week. They will vary with traffic speed, rising when the average speed in the lane drops below 50 mph. Pretty neat — peak-load pricing taken to its logical extreme. The technology that makes this possible is fairly recent. And it’s a good example of how technical improvements raise well-being — in this case, allowing those whose value of time is high to substitute money for their time and reducing congestion on the “free” lanes for the rest of us.

Drivers Aren’t the Only People With Blind Spots

Math professor R. Andrew Hicks has come up with an amazing new rear-view mirror for the driver’s side of the car that eliminates blind spots. The secret is that standard mirrors are flat, but this one has subtle curves that greatly widens the field of view, but without being distorting. If you look at the photo accompanying the link above, it is amazing how much better the new mirror seems to be.

Alas, you won’t see Hicks’s mirror on many cars any time soon. U.S. regulations require that driver’s side mirrors be flat, and this mirror is not flat. So if you want one, you will have to buy it and install it on the car yourself.