Category: Transportation

  • Signs

    I’m having way too much fun observing signage.

    20120923-175858.jpg

  • New Vehicle Crash Test; Ouch

    A new Insurance Institute for Highway Safety crash test is making me wince. If you watch the “small overlap test” video above, you can see most of the airbags doing absolutely no good because of the physics of the collision.

    I like my head. I like it to not bounce off car parts.

    Another thought I always have when watching crash videos is, “I’m glad I don’t have to clean up afterward.”

    Update: The YouTube embedment should be working now.

  • Mobile Behavior

    The thing that amazes me the most, if you watch this closely, is how blase everyone is about the close encounters.

    3-Way Street from ronconcocacola on Vimeo.

  • I Learn my Job Every Day

    2010-10-17_IMG_2436

    If you had asked me yesterday, “Bill, can you prevent pedestrians from crossing a bridge during construction?” my answer would have been “Sure.” And I would have been wrong wrong wrong:

    From the 2009 Manual on Uniform Traffic Control Devices (MUTCD):

    04. If the TTC [Temporary Traffic Control] zone affects the movement of pedestrians, adequate pedestrian access and walkways shall be provided. If the TTC zone affects an accessible and detectable pedestrian facility, the accessibility and detectability shall be maintained along the alternate pedestrian route. [emphasis added]

    Aha! This has implications because on one of my projects. I am proposing to close a bridge across an interstate for a weekend. During this time, I have to figure out how to get people over, under, around, or through the construction.

    One idea is to set up a van shuttle from one side to the other, using the detour route. We shall see.

    I had not been aware of that particular mandate in this most recent version of the MUTCD. Just goes to show that even “experts” don’t always know everything.

  • Atlanta Metro Area Accessibility

    Office Parking Lot: Wednesday 1/12/11

    We who live and work in the Atlanta metropolitan region had an object lesson in what happens when a major snowstorm hits a southern city: shutdown. You might assume that this has implications for accessibility. You would be right.

    The Storm

    The snow that hit us on Sunday night put five inches on the ground at my house in the northern suburbs and I’ve seen reports ranging between two and nine, depending on the area. However, the snow wasn’t the big problem. It was the sleet and freezing rain followed by a cold snap in the 20’s that froze everything hard that transformed what might have been a significant winter event into snowpocalypse. Following that with a Monday where temperatures edged into melting territory only to have them plunge overnight—then a Tuesday and Wednesday (so far) where the sun played its important role in slightly melting everything only to have it refreeze after ye olde solar orbe disappeared—we have been presented with a region-wide problem.

    The Results

    It hasn’t been possible to move about in anything like a normal fashion. MARTA, Cobb County Transit, and Gwinnett County Transit, to cite only a few, didn’t run at all on Monday or Tuesday and with only limited service on Wednesday (MARTA Trains ran a reduced schedule those three days).

    Major roads were “passable” on Wednesday but were horrible on Tuesday and death-defying on Monday. Minor roads were in some respects better but in others much, much worse. Suburban subdivisions were almost impassable depending on the terrain and how much sun the roads had received. In fact, many were actually impassable, keeping their residents at home even if they desired to leave. City streets were in similar conditions as crews worked to keep main arteries open with limited equipment and resources.

    The Underlying Problem

    The whole situation has illustrated something about Altanta and its surrounds that is not as true in other eastern United States metropolitan areas: We are mostly dependent on the automobile as a central driver (no pun intended) of our economy. For example, I live in northeast Cobb County. I work in southwest Gwinnett County. I have a 35 mile one-way commute and I am by no means alone in that distance. On Monday I didn’t think even once that it was possible to make it to work. Tuesday I briefly considered it, but one look at Georgia Navigator convinced me otherwise.

    Atlanta, Noon, Snowpocalypse. This was Monday's map but it's representative of Tuesday

    If you can’t get to work, or to school, or to the store, then some of the basic transactions that power our economy do not function.

    My personal problem was that there were no options for getting to my office outside my car or my bike or my own two legs. This particular storm put the kabosh on any transit option that might have existed, but for the sake of argument let’s postulate a scenario where the snowy/icy conditions were keeping me stuck in my own house1 but that MARTA, Cobb County Transit and Gwinnett County Transit were still operating. There would still be no method for me to get to work unless I caught a ride by car2. It isn’t possible for me to walk a reasonable distance and then catch another tranportation method.

    Beyond the Ice Event

    This has other not-unreasonable implications for transportation blockage: A year and a half ago we had serious flooding in the region that shut down a lot of the major river crossings of the Chattahoochee. That pinched the options that remained by shoving all the traffic through those chokepoints. There wasn’t any option but to suck it up and sit in traffic for twice as long as normal. Rideshare would have been effective, but my schedule is such that I can’t commit to a particular commutting time. Buses would have been an option, but again see 2 below.

    Atlanta is heavily dependent on the single-passenger vehicle. This is obvious yet regarded as inevitable and unchangeable. I agree that there are huge obstacles to making this region more accessible by alternative means of transportation however it’s not impossible to move things in the right direction. We just need to be aware of the challenges and work to overcome them.

    We have the privilege of living in one of the least dense metropolitan areas in the United States (census 2000). We’re ranked 18th in population but 64th in population density. This means it’s more expensive to serve the same population with traditional transit options than it would be in New York or San Francisco. And while we’re making efforts to provide better options for cyclists to coexist safely with automobiles, the distances involved for those people (like me) who live in the suburbs preclude a total cycle commute. Also, there are choke points such as river crossings which are auto-centric and cycle-unfriendly. We also have a politcal arrangement in the area which makes it difficult to have central policy making for the metropolitan area as a whole and this is compounded by state politics which, for better or for worse, are focusing more and more on the disparities between the Atlanta region and the rest of the state.

    I personally regard one of the bigger problems at the moment as people’s inability to relocate. It’s a down economy with a down housing market; a great time to buy (if you can get a loan) but a bad time to sell. I am planning to practice some of what I preach, assuming we can sell the house for a reasonable amount. We will move ourselves, our cat and our stuff to a place where I will have transit options and I might get to work in Norcoss by 9:00 rather than 11:00. If people voluntarily start placing themselves where the facilities already exist, there will be incentive for policy makers and others to support that activity. On the flip side, if no efforts are made to provide alternative means of transportation, there will be no incentive for people to move. It’s a vicious chicken/egg proposition.

    This problem has developed over the long term and will only be solved over the long term. However, long journeys are completed through short steps. Let’s make this region a more accessible place for our kids.


    1: With my driveway that is not an impossible occurrence. Jenn’s car won’t leave the garage at least until Saturday, if not Sunday.
    2: Not wholly true, but true for all practical purposes. I once did the math to see what it would take for me to get to work by transit. First step: bike or walk 6 miles to catch a bus. Two trains, two buses, and two system transfers later, ending with a one-mile walk/bike, I’d be at work. Time of departure: 6:00 AM. Time of arrival: 11:00 AM. I don’t consider that useful.

  • New Notebook

    I use notebooks at work. I subscribe to the philosophy that if you don’t write it down, it didn’t happen. Since 2000, I’ve been using National Brand 5×5 Quad Paper with Eye Ease® paper. I love these notebooks and have taken a decade to go through the box that I bought way back then.

    5x5 Quadrille Green paper notebook

    We are now coming to the end of an era; I’m almost out of these notebooks. I still have a few at home that are dedicated to specific things, but the one at work is currently being scribed on page 145 of 160. Not too many days remain until notebook number 12 will be christened (there’s actually been more than that, but I restarted my numbering in 2004). Because I’m having to purchase a new notebook, I’m going to try something a bit different. Whitelines!

    Whitelines / Quadrille Comparison
    I am heartily entertained by the “Carbon Free” notation. If you don’t read the fine print, it implies that this was made with no carbon, rather than as a zero carbon footprint product, although I’m curious how they can produce something from raw materials in such a manner that they produce no carbon footprint. That’s counterintuitive to me. I’ll have to go look it up, later.

    This is the Whitelines wirebound A4 notebook. The wirebound was very important to me because I use both sides of my notebook paper and need to be able to fold it back without shattering the spine of the notebook. A4, of course, is one of those crazy non-American thingies dealing with paper size but it’s generally equivalent to 8.5″ x 11″, i.e. American Letter size.

    The quadrille nature of the paper is also important to me because it’s nice to have the lines keeping me in square. I’m not the worlds best free hand artist and I can use the squares to help keep me in scale.

    IMAG0275.jpg

    The argument by the manufacturer is that the white lines on the paper shown above are better to use that the dark lines on more common graph paper. At first glimpse, I’m unconvinced that this will make a big difference to me when I’m working. It may make a difference when I go to photo copy the page, but that doesn’t happen very often.

    Stack 'O Notebooks from work. Latest edition will be Whitelines

    Honestly, I just wanted to try something new for a change. I’ve spent a lot of time with that other notebook.

    Other remarks: the Whitelines book feels a bit floppier than the quad books I’ve been using. I’m also a bit worried that it’s not going to stand up to the abuse I give these notebooks (being thrown around, crushed into bags, stacked under books, generally treated poorly).

  • Electoral Selections: Georgia 2010

    Without preamble, here are the ways I’m going this election season, and why:

    Georgia State Constitutional Amendment #1: “Shall the Constitution of Georgia be amended so as to make Georgia more economically competitive by authorizing legislation to uphold reasonable competitive agreements?”

    I will vote NO NO NO. This could also be stated, “Shall the Constitution of Georgia be amended to make employees less able to control their own futures?” Sure, this is a boon for businesses, but I regard this as something that should be addressed through employee retention policies and not forcing me (and you can be forced after hiring to sign these) to sign a non-compete agreement that is so broad as to disallow me from working in my field of expertise.

    Georgia State Constitutional Amendment #2: “Shall the Constitution of Georgia be amended so as to impose an annual $10.00 trauma charge on certain motor vehicles in this state for the purpose of funding trauma care?”

    This is a tax levied on all owners of private automobiles. Yes, it’s a tax. Yes, I’ll vote for it. Trauma hospitals are important and motor vehicles provide a lot of the supply of patients to them.

    Georgia State Constitutional Amendment #3: “Shall the Constitution of Georgia be amended so as to allow the Georgia Department of Transportation to enter into multiyear construction agreements without requiring appropriations in the current fiscal year for the total amount of payments that would be due under the entire agreement so as to reduce long-term construction costs paid by the state?”

    Ahh, something of which I have expertise! Yes, I’ll vote for this one, and you should, too. This doesn’t change the obligation of the state in funding projects, doesn’t change the costs, doesn’t change how people get paid, it only changes the way the contracts are obligated from fiscal year to fiscal year. Sure, it has a downside if the DOT gets discombobulated and stops funding projects; there would be half-finished roads everywhere, but this is still a good idea. Vote for it!

    Georgia State Constitutional Amendment #4: “Shall the Constitution of Georgia be amended so as to allow the Georgia Department of Transportation to enter into multiyear construction agreements without requiring appropriations in the current fiscal year for the total amount of payments that would be due under the entire agreement so as to reduce long-term construction costs paid by the state?”

    This one is basically the same as #3. If you vote for 3, you should vote for 4 and vice versa.

    Georgia State Constitutional Amendment #5: “Shall the Constitution of Georgia be amended so as to allow the owners of real property located in industrial areas to remove the property from the industrial area?”

    I have no earthly clue about this one. I have to go find out.

    U.S. Senate: Michael Thurmond (D). I’m voting for Commissioner Thurmond rather than for the incumbent Johnny Isakson (R) for social-justice reasons. I agree with Isakson’s positions on business and (somewhat) taxation, although he’s been holding the republican party line recently (“The Party of No”) however his positions on various social agendae I find repugnant.

    Georgia Governor: Former Governor Roy Barnes (D). I’ve voting for Barnes and against former U.S. Representative Nathan Deal. I haven’t put much thought into the GA Governor’s race because when Deal announced his candidacy, he also took up the position of a Birther, which is one of my few political litmus tests. If you’re a birther, you are either ignorant or pandering to the ignorant, and I will not vote for you. This issue is dead dead dead.

    On the other side of the coin, I’m also voting for Barnes for pocketbook reasons. I think he’ll be better for Georgia transportation funding than Deal would be. That spells continued employment for me.

    Georgia Lieutenant Governor: Casey Cagle (R-incumbent). I like Casey. He’s done good stuff. That’s enough for me

    Georgia Attorney General: Ken Hodges (D). I was going to vote for Sam Olens (R) the basis of the competency he displayed as the Commissioner of Cobb County, rather than his ideology. However, I realized that while I would support him in a run for Governor or Lt. Governor, I do not support him for Attorney General. He came out in the wake of the federal health care law as saying that if he were Attorney General, he would join the lawsuit challenging the law’s constitutionality. I don’t personally think there is any merit in that claim and I believe that this is a Republican fuck you to the American people. I don’t want him wasting my tax dollars on a frivolous lawsuit so Ken, you got my vote.

    U.S. Rep: Tom Price (R-incumbent). Running unopposed.

    State Rep: Don Parsons (R-incumbent). Running unopposed.

    State Senator: Chip Rogers (R-incumbent). I actually need to do some research into his opponent, Patrick Thompson, but at this time I think I’ll be voting incumbent.

    If you notice that there are a lot of things left off this list, it’s because I either don’t have an opinion yet, or haven’t done my research.

  • TIGER Grants

    The list for TIGER discretionary transportation grants by the FHWA has been released. I don’t have a link to point to at the moment because all I’ve got is a PDF in my email, but I’ll put it up here as soon as I do. What I know is that GA didn’t get a single grant. That’s a two-fold blow after having been stiffed for Federal Rail Funding, too.

    I expect we’ll hear about this one in the news, soon.

    Update: Found the Link. TIGER Awards.

    Reaction from the AJC

  • Fun New Interchange Designs

    I’m working with CORSIM this week. It is a microsimulation traffic modeling software that can tell you from a stochastic standpoint how well the traffic is going to move on your proposed roadway after certain improvements are installed.

    One of the outputs of this software is a simulation that let’s you watch the cars run around. It’s a good debugging tool and display, and to that end, you can mess with the curvature of what would otherwise be straight point to point lines. Needless to say, you can screw it up.

    Here’s what I ended up with while trying to get a nice arc out of that loop ramp.
    New Ramp Design_small

    This would probably increase congestion because people would go out of their way to drive on it. But, for the coup de grace…

    New Ramp Design1_small

    I was highly entertained when both of these popped up. I confess, however, that the second one was done on purpose, just to see what it would spit out.

  • Metric (SI) vs. English (Imperial)

    Jim the Cro-ster over at Physics is Phunnner than Phlatulance remarked today on the metric vs. english dichotomy of U.S. society and its implications for daily use.

    I agree with his main thrust, that in order for something to be useful, it must be used. i.e., to really grok a measurement, like the meter or centimeter, you need a visceral understanding of its magnitude. I can pick up a object and guess its weight in pounds within 10% as long as it’s not too heavy. I can’t do that in kilograms without first doing the pounds and then converting in my head. Same with meters, although I’m better there, and despite my work, I’m absolutely crap with kilometers per hour.

    It’s all about familiarity. During college, I worked with metric (SI) units the majority of the time while taking engineering classes. I heartily detested any moment where I was forced back upon english (imperial)1, but as Jim mentions, we didn’t do any familiarization with the metric units beyond our calculations. It wasn’t until I entered the workplace and started boring holes in things, or now building roads, than I started applying numbers to real world objects2.

    So, I know exactly what it’s like to have a four 12′ lanes with a 32′ median, perhaps a 10′ shoulder. In metric, that’s…ummm…3.6 meter lanes with a 10 meter median and 3 meter shoulders? I just don’t think in meters, and I’m trained! What do we expect of the rank and file grocery shopper who only cares about how much that gallon of milk costs, not the fact that instead of $3.99 per gal, it’s $1.05 per liter. What the hell is is a liter anyway?

    In an interesting bit of history, the U.S. Federal Highway Administration tried to do a conversion from imperial to metric back in the 90’s. The intention was to have a 5 year switchover and then all federally funded projects would be required to be metric. This crashed and burned due to politics. Amusingly (if you have a macabre sense of humor), this has made it more difficult in the long run to pursue metrification in the highway industry because so many people have bad tastes in their mouths about the on again off again metric switch. A lot of highway projects were caught in the middle, had to be converted from imperial to metric, then ended up being converted from metric back to imperial3. Many decision-making highway engineers and officials were in charge of projects that got mangled in this fashion and have a severe distaste for any FHWA-mandated switchover.

    The upshot is, the U.S. remains the only first-world country to not have officially adopted the metric system. We maintain this high-horse with the company of two other leading countries, Myanmar and Liberia.

    Should we convert? Yes. Will we convert? Not in the next ten years.


    1: yes I know there’s a difference between Imperial and U.S. Customary Units. I’d rather type “imperial” though.
    2: let’s not forget the time I spent working in feet, inches, and sixteenths while doing wood projects at home.
    3: this is a difficult process, not nearly as easy as you might think.