Virginia Congestion-Rating Methodology in the Works

congestionby James A. Bacon

In 2012 the General Assembly passed a bill sponsored by Del. James L. LeMunyon, R-Chantilly, that called for rating significant transportation projects on their ability to reduce congestion. The idea promptly disappeared into the labyrinth of Virginia’s transportation bureaucracy. At the time, the issue seemed academic — the commonwealth was fast running out of money to build new transportation projects anyway. But, then, in 2013, the legislature approved a funding package that would generate roughly $800 million yearly more money for roads and transit.

The little-noted bill suddenly became more relevant than LeMunyon had imagined it would. When drafting the legislation, the delegate said in an address to the American Dream Coalition annual conference three weeks ago, “We had no idea that there would be a major funding bill.” But the timing couldn’t have been more fortuitous. It gave the state a year’s head start in the laborious, three-year task of developing metrics and conducting analysis for projects that soon will be flowing through the pipeline.

The job of developing a system for rating transportation projects passed into the hands of a study team of the Virginia Department of Transportation and the Department of Rail and Public Transit. With a $3 million budget, the group hired AECOM, a transportation consulting firm, to begin developing a methodology for calculating congestion ratings. The Texas Transportation Institute, known for its national Urban Mobility Report, was enlisted to provide peer review.

After two years, the study is still underway. The goal is to have 25 to 30 major highway, transit and technology projects rated by December 2014 to guide the distribution of construction dollars in 2015. Bacon’s Rebellion caught up with Kanathur Srikanth, the transportation planning director assigned to the study, to find out more.

The idea of rating projects by congestion mitigation is far more complex than it might appear at first glance. How do you measure highway congestion, asks Skrikanth. By comparing the number of vehicles on the road to the design capacity? By the speed they are traveling? By the length of delays? By the duration of the congestion?

There’s a whole different set of questions for measuring transit congestion, Srikanth says. Do you measure the number of rail cars, or the number of people in the cars? Will adding more rail cars reduce congestion on roadways — or will it just reduce crowding on rail cars. “Is crowding inside rail cars a measure of congestion — or comfort?” Then there’s the issue of comparing apples and apples when rating highway and transit projects.

The study team also has to answer the question of what constitutes a “significant” project. Should road ratings be limited to Interstate highways? Should significance be determined by the number of travelers on the road or by the duration of the congestion on the road? The definition matters. The study group has resources to study only 25 to 30 projects next year.

It’s a lot to figure out, and the study team has made an effort to consult widely with transportation stakeholders, especially the Commonwealth Transportation Board (CTB) and the Northern Virginia Transportation Authority (NVTA). At present, the study team is soliciting the CTB’s input on which principles it should use for determining which projects to select, says Srikanth. Does the transportation policy-making body want to look at projects with the biggest impact, say, or projects that potentially can be funded and built the most quickly.

Nothing in the legislation  prioritizes projects on the basis of their congestion-mitigation ratings. The NVTA must include the rating in its decision-making process but is free to consider safety, economic development, environmental impact and other factors when allocating Northern Virginia transportation dollars. The CTB is free to consider or ignore the rating when allocating state dollars.

To outsiders the project may seem to be moving at a snail’s pace. It takes three  years to produce tangible results? Really? But Srikanth says the study group is actually expediting the study. “We’re trying to do [the first round of project ratings] in 15 months. It’s been hectic.” Once a consensus has been developed on the methodology, the process should move more rapidly when updating or rating future projects. No one wants to rush through the methodology, discover big flaws and then start the process over, he says.  “We want to think this thing through.”

Bacon’s bottom line: I’m really hoping that the Bi-County Parkway will be one of the projects that warrants a congestion rating. The controversy might be settled a year from now but an analysis of the Charlottesville Bypass would be in order as well. There’s nothing to stop state officials from pushing through projects with low ratings but the ratings will bias the outcome in favor of projects that offer more bang for the taxpayer’s buck.


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12 responses to “Virginia Congestion-Rating Methodology in the Works”

  1. there’s a school of thought that when you do something to reduce congestion, you encourage more driving.. thus defeating the intended purpose.

    I don’t have any faith in the VDOT initiative not because I don’t think it’s possible to make some headway on the issue but I simply think that VDOT
    will co-opt it to justify their projects.

    so here’s my question – do you think putting a toll on a road will reduce congestion?

    bonus question – do you think that will be one of the criteria used when evaluating the congestion-reducing capability of a road?

    here’s what VDOT can do on every single new limited access road – in addition to all the other “study” , add one – and that one would be an investor grade study to see what effect tolls would have on the road.

    In other words, compare two versions of the same road – one that is “free” and the very same one with a toll on it.

    The quickest, most cost-effective way to reduce congestion on many of our roads? put a congestion toll on it but give anyone with 2 or more folks in the car a free trip.

  2. Yes, there is the issue with “induced traffic” which illustrates that when you build additional highway capacity you increase — not decrease — congestion. It is counter-intuitive but each time it’s been studied, induced traffic has been found. While every highway project is different (and not a huge percentage have been studied), the rule of thumb is that a 10 percent increase in road capacity will cause an immediate 4 percent increase in traffic, growing to 10 percent (or the entire new capacity) in a few, usually five, years without any positive effect on the “relieved” roads. The Commission on the Future of Transportation in Virginia noted in 1998 that it’s a “futile exercise” to try and build your way out of congestion because you induce so much new traffic.

    It’s not “do something” which is the issue, Larryg. It’s that the only congestion “something” Americans think about is building more roadways and roadway capacity.

    Even with tolls, they are never just added. Tolls are solely added if the roadway or lanes are BUILT as a tollway, such as the Intercounty Connector (or some similar name) just north of D.C. in Maryland (It runs east west between I-95 and 270) which isn’t generating the expected driving required to pay for itself and provide money for other Maryland transportation projects as lawmakers thought. Meanwhile, one of the weird things which has come up is that the higher the dynamic charges on the new Beltway toll lanes around Northern Virginia the more they seem to be used. The supposition is that drivers see the higher prices exhibited on the electronic signs and substitute the increase in toll rates for thinking about their actual drive times in a manner which has little connection to the economic concept of “utility.” The higher rates “panic” drivers into throwing away more money on higher charges. Operators are, therefore, subtly incentivized to keep the dynamic tolls higher than they should be (based on free-lane car counts) because drivers use the toll lanes more when the tolls are higher. From the revenue perspective, it’s a win (higher tolls)-win (more payers) situation.

    An odd thing happened as well in Auckland NZ during the America’s Cup races a couple months ago. Auckland is very much an American-style metro area with major freeways running in most directions. The americas Cup’s races, in San Francisco, started at 8 a.m. New Zealand time and a few drivers stayed home (or went to work very early) to watch the sailing on television. Discovering a sudden surge in traffic speeds during those mornings (and collecting both speed and traffic count data), the area is now realizing that it only takes a handful of “non-drivers” to free congestion, something on the order of two percent fewer vehicles equals 39 percent increase in traffic speeds. (Preliminary). According to research noted in Tom Vanderbilt’s “Traffic,” a five percent reduction in vehicles will increase traffic speeds by 50 percent.

    Yet getting drivers off the road is the one “something” that no city, no state, no American transportation project, ever considers. Though it costs billions more to build more capacity and causes the induced traffic problem, all our “solutions” for congestion involve building more highways — as you have subtly pointed out, Larryg. And no politician is willing to challenge driving voters and tell us that it is indeed our “key in ignition default position” for every transportation need or desire which is causing the congestion. Since the best description of American political leadership is “finding out which direction the parade is going and getting in front,” we are caught in a cycle of making our congestion worse each time (or at least most times) we try to decrease it.

    1. reed fawell III Avatar
      reed fawell III

      SALZ says: “Discovering a sudden surge in traffic speeds during those mornings (and collecting both speed and traffic count data), the area is now realizing that it only takes a handful of “non-drivers” to free congestion, something on the order of two percent fewer vehicles equals 39 percent increase in traffic speeds. (Preliminary). According to research noted in Tom Vanderbilt’s “Traffic,” a five percent reduction in vehicles will increase traffic speeds by 50 percent.”

      In reply to Salz’s above comment I suggest that: this comment is one of the MOST POWERFUL and SUCCINCT arguments I have ever heard in favor of why Smart Growth Development is so critical to traffic reduction within its own area but also within a entire region.

      Perhaps too it also helps to explain the remarkable fact that the traffic in Ballston / Rosslyn corridor moves as fast as it did more that 30 years ago. And that its current traffic does so despite the massive development that has occurred within that corridor over those past three decades.

      And that it helps to explain the massive traffic congestion that Tysons’ Corner breeds throughout our region. In addition, it suggests that rather small remedies if properly implemented may lead to remarkable results. For more details on this important subject and possibility please see the article and comments found at:

      https://www.baconsrebellion.com/2013/09/how-about-a-road-realignment-and-closure-commission.html#comments

  3. Yes, there is the issue with “induced traffic” which illustrates that when you build additional highway capacity you increase — not decrease — congestion. It is counter-intuitive but each time it’s been studied, induced traffic has been found. While every highway project is different (and not a huge percentage have been studied), the rule of thumb is that a 10 percent increase in road capacity will cause an immediate 4 percent increase in traffic, growing to 10 percent (or the entire new capacity) in a few, usually five, years without any positive effect on the “relieved” roads. The Commission on the Future of Transportation in Virginia noted in 1998 that it’s a “futile exercise” to try and build your way out of congestion because you induce so much new traffic.

    It’s not “do something” which is the issue, Larryg. It’s that the only congestion “something” Americans think about is building more roadways and roadway capacity.

    Even with tolls, they are never just added. Tolls are solely added if the roadway or lanes are BUILT as a tollway, such as the Intercounty Connector (or some similar name) just north of D.C. in Maryland (It runs east west between I-95 and 270) which isn’t generating the expected driving required to pay for itself and provide money for other Maryland transportation projects as lawmakers thought. Meanwhile, one of the weird things which has come up is that the higher the dynamic charges on the new Beltway toll lanes around Northern Virginia the more they seem to be used. The supposition is that drivers see the higher prices exhibited on the electronic signs and substitute the increase in toll rates for thinking about their actual drive times in a manner which has little connection to the economic concept of “utility.” The higher rates “panic” drivers into throwing away more money on higher charges. Operators are, therefore, subtly incentivized to keep the dynamic tolls higher than they should be (based on free-lane car counts) because drivers use the toll lanes more when the tolls are higher. From the revenue perspective, it’s a win (higher tolls)-win (more payers) situation.

    An odd thing happened as well in Auckland NZ during the America’s Cup races a couple months ago. Auckland is very much an American-style metro area with major freeways running in most directions. The americas Cup’s races, in San Francisco, started at 8 a.m. New Zealand time and a few drivers stayed home (or went to work very early) to watch the sailing on television. Discovering a sudden surge in traffic speeds during those mornings (and collecting both speed and traffic count data), the area is now realizing that it only takes a handful of “non-drivers” to free congestion, something on the order of two percent fewer vehicles equals 39 percent increase in traffic speeds. (Preliminary). According to research noted in Tom Vanderbilt’s “Traffic,” a five percent reduction in vehicles will increase traffic speeds by 50 percent.

    Yet getting drivers off the road is the one “something” that no city, no state, no American transportation project, ever considers. Though it costs billions more to build more capacity and causes the induced traffic problem, all our “solutions” for congestion involve building more highways — as you have subtly pointed out, Larryg. And no politician is willing to challenge driving voters and tell us that it is indeed our “key in ignition default position” for every transportation need or desire which is causing the congestion. Since the best description of American political leadership is “finding out which direction the parade is going and getting in front,” we are caught in a cycle of making our congestion worse each time (or at least most times) we try to decrease it.

  4. re: “induced”… a better description is “latent” but it does depend on the surrounding area as you could build a road in a rural area and there is no “latent demand” and you won’t induce anything.

    but I must not be explaining the “toll vs free” idea very well…

    ” Even with tolls, they are never just added. Tolls are solely added if the roadway or lanes are BUILT as a tollway”

    not anymore.

    if you build a limited access road (one that does not have at-grade intersections and can only be access via interchange ramps (except perhap at the termini)… in other words once you get on it there is no way to get off other than a ramp or the exit – you can TOLL that road quite easily now days just by putting up overhead gantries that either “read” transponders or license plates.

    My view is that latent demand is not the same when you design the road to be tolled – than when it is designed to be untolled and that such an analysis may well provide information about the “true need” of the road.

    While it’s true about the ICC in Md.. they knew ahead of time from their analysis that it would not be viable as a stand alone toll road even before they built it – from their analyses.

    The question is – if the ICC was built as a free road how would the traffic compare?

    My view is that the traffic would easily be 2X, 3X….

    and that’s my point.

    is the ICC not needed right now? how about 20 years from now?

    how do you build a road – and preserve it’s capacity benefit to last into the future?

    I say you build it as a toll road… and configure the tolls according to local conditions which could mean free passage at some times and tolls at others and dynamic tolls at other times – dynamic tolls that vary with congestion.

    I do not think we should build another limited access road in Va that does not include in the planning – a toll road alternative with an investor-grade analysis. An investor-grade analysis differs from a VDOT analysis in a fundamental way. VDOT does traffic projections and are not as good at it as one would like especially when it comes to dealing with latent demand.
    But an investor grade analysis is primarily a financial analysis which seeks to find out how much the road is “worth” to people if they were going to pay.
    It determines how high the toll can go before it start to reduce demand.

    One of the biggest trip generators on many roads is that people do NOT tend to combine errands into less trips. they just don’t plan that way.

    so everything they “need” something, they head out to get it.

    this type of behavior is especially problematical at rush hour but tolls tend to affect these “discretionary” trips which then result in single trips with multiple errands – perhaps outside of rush hour.

    tolls are becoming the de-facto way to manage congestion. The tolls put a price on the trip and people decide the value of that trip at that particular time.

    this is why I think any “congestion prioritization” scheme needs to include a prospective toll analysis – if for no other reason to ascertain how much latent demand there is and how much true “need” there is.

    If a toll analysis revealed a strong latent demand – what would you do?
    you’d know that the capacity – as a free road – will fill quickly and may not actually reduce congestion – but actually increase it if the latent traffic that the new road attracts then spreads out to nearby surface streets.

  5. DJRippert Avatar

    The answer is simple – devolve the absolute maximum amount of road management possible to the localities. Let the localities raise their own funds and build their own roads to the greatest extent possible.

    Eliminate state transportation taxes to the greatest extent possible. Send as little local money as possible to Richmond for transportation.

    If the people of Northern Virginia want to build the bi-county parkway and they are willing to pay for it then the state should stay away from the decision. In a similar vein, if people in Bath County (Population – 4,731) want to maintain miles and miles of paved roads they’d better contemplate increased taxes in order to do so.

    Closing the door to Richmond opens the door to progress.

  6. On local roads, I totally agree with DJ.

    We need to keep in mind the functional classifications of roads.

    “local” roads are local “access” roads. they do not go anywhere, usually dead end and only really serve the people living there.

    at the other end are limited access roads that are primarily designed to move people from “A” to “B” from one city to another or one region to another and even across states. These are the Interstates and other “primary” roads of statewide significance to include some U.S. “signed” roads like US 29.

    in between these two are collectors, connectors and arterials.

    the arterials serve cities, regions, MSAs.

    the collector/connectors handle the in-between the main arteries.

    The State Gas Tax and the Federal Gas tax in most states is primarily used to maintain and improve the top level travel roads.

    In most states, the local roads maintained by either property taxes, dedicated transportation taxes and/or HOAs. The locality is the logical entity to do this as they know their own needs best.

    the in-between collectors/connectors – regional roads are the property focus of the MPOs who do get State and Federal allocations from those gas taxes.

    I still maintain that localities in Va are hurt but not being responsible for their roads in particular because VDOT generally does not multi-phase projects. they want a segment to build – at one time.

    a locality may want to phase it – connect it to the pace of development, have new development pay for sub-segments as that development occurs.

    right now the localities approve growth – and there is no real way for them to coordinate those land-use decisions in the same timeframe with VDOT programming. Almost always, VDOT is following along behind the development trying to catch up the roads to the development.

    This is not some weird concept. Every city and town in Va right now does business this way and it gives them much more control over coordinating land-use with transportation.

  7. reed fawell III Avatar
    reed fawell III

    Regarding this thing described as “The job of developing a system for rating transportation projects passed into the hands of a study team of the Virginia Department of Transportation and the Department of Rail and Public Transit. With a $3 million budget, the group hired AECOM, a transportation consulting firm, to begin developing a methodology for calculating congestion ratings.”

    If it truly worked it could be a powerful tool. But the practical challenges are monumental. Perhaps there are a handful of ways to build this tool right. Likely there are endless ways to build it wrong or incomplete so as to make a tool that is useless at best, and harmful to dangerous at worst.

    On top of that the operator of such a tool must use it with great skill and impeccable honesty. Absolutely without bias or special interest.

    Thus this tool to work needs to be build and operated by people with competence, wisdom, experience and virtue of the highest order. The fate and results of hundreds of billions of taxpayer dollars, and the lives of millions of people will affected by the results both positive or negative.

    The chances of pulling this off right are slim. Building it right is only the start. It must be operated by a specially appointed and totally independent group that operates it, and modifies it as necessary based on real life experience, without inference by any public official in office or any special interest. Surely the recent history of Virginia government in the making of Virginia Transportation decisions makes this need crystal clear.

    1. reed fawell III Avatar
      reed fawell III

      PS – the product of this tool then should not be binding. Its advisory. But its results should carry great weight by reason of its source and methods alone.

    2. reed fawell III Avatar
      reed fawell III

      It is also important that this “congestion analysis tool” be designed to “understand” and analyze an ever wider array and variety of traffic fixes, and perhaps even be able to compare one against the other.

      Take for example, salz’s comment above that:

      … something on the order of two percent fewer vehicles equals 39 percent increase in traffic speeds. (Preliminary) … and a five percent reduction in vehicles will increase traffic speeds by 50 percent.”

      Combine that above thought with the idea that a series of small remedies if properly implemented may lead to remarkable traffic reduction results. For details on this important subject see the article and comments found at:

      https://www.baconsrebellion.com/2013/09/how-about-a-road-realignment-and-closure-commission.html#comments

      Also, combine these ideas with the traffic congestion tools arising out of emerging Smart Traffic technologies and one begins to see the need for a highly flexible analytic tool for a variety of solutions in lieu of our increasing outdated massive “infrastructure road and rail solutions.” Especially because the latter often attracting far more traffic than they dilute. (This compounds the need also for independent impartial operators of the diagnostic tools that measure traffic congestion and relief.)

      See also salz’s November 19, 2013 at 11:50 pm comment above.

      1. reed fawell III Avatar
        reed fawell III

        For a fuller discussion of emerging options that might be included in an analysis see for example my Oct. 23 7:49 pm comment found at:

        https://www.baconsrebellion.com/2013/10/at-last-a-transportation-plan-from-cuccinelli.html#comments

  8. We have in the local MPO “prioritization process” that includes congestion as one of the elements but it’s purely advisory – good old-fashioned politics is how decisions are actually made!

    😉

    I just have serious issues with using congestion reduction on a per individual road basis as a valid criteria.

    localized congestion reduction that basically moves congestion from one place to another is not really _network_ congestion reduction.

    and as Salz has indicated – new roads can actually INCREASE network congestion by inducing latent demand.

    there is no doubt in my mind at all that if we added two new “free” lanes to I-95 – that we’d encourage more driving from existing commuters AND encourage MORE commuting… – which, in turn, would lead to MORE traffic on NoVa’s transportation network.

    I predict that this study .. is not going to end well… because they’re going to get to these issues and those are not things that would encourage more road building but rather to more managing of existing congestion.

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