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Posts Tagged ‘network’

What Happens to an LTL Network When a Snowstorm Hits?

February 16th, 2010 Sean Devine No comments

With the recent blizzards pounding the mid-Atlantic part of the country, I started to think about how our LTL network adapts during weather emergencies to make sure our customers still receive their freight shipments in as timely a manner as possible.

Service center manager Jeff Raske of Fargo, N.D., and freight operations manager Damian Boyd of Romulus, Mich., have to deal with weather conditions like this frequently due to their locations in the Snow Belt. Jeff has lived in North Dakota most of his life and has many years of experience dealing with brutal winters. Damian, however, is spending his first winter in a northern climate after spending most of his Con-way Freight career in southern states.

Even though Jeff and Damian have different levels of winter experience, both said they adapt to severe weather by keeping safety number one and using three other key strategies — preparation, communication and teamwork.

Preparation begins as early as November through driver education. Tailgate meetings take place at both service centers where managers review the precautions each driver should take. Jeff and Damian run down a checklist that includes dressing appropriately for conditions, packing an emergency bag and instructing drivers on how to use block heaters so tractors will start up in the cold weather. Con-way Freight drivers also use fuel additives to keep diesel from gelling up in extreme cold.

When a storm is on the horizon, Jeff and Damian have checklists of their own to run through. They both contact local snow removal companies to make sure they start monitoring the freight yards to keep the lots clear. They also take a look at shipping schedules in advance to anticipate possible problems and try to deliver time-sensitive freight early in lanes potentially affected by the storm.

Communication between drivers, dispatchers and customers is critical during a snowstorm. During a recent storm, Damian’s dispatcher communicated frequently with state police to check on road closures. Having an idea of when roads would reopen let him plan alternate routes and combine shipments to compensate. The dispatchers also keep drivers apprised of weather conditions so they can make good decisions about the next legs of their journeys.

In North Dakota, Highway 29 in and out of Fargo shuts down completely several times a year. Because of situations like that, Jeff maintains close ties with the service center manager in Bismarck. The two service centers often work together to overcome irregularities in the network caused by weather. Last year, when Fargo experienced severe flooding, Jeff stayed in constant contact with both the Bismarck service center and his customers to adjust day by day as the North River rose and receded.

Teamwork by the people in our network keeps it running through the worst weather conditions. In one of the recent storms, Damian faced the biggest snowstorm he has ever had to work through. Blustery conditions in Ohio clogged many shipping lanes and jeopardized Monday delivery. To compensate, the Romulus service center set up weekend operations and many drivers and dockworkers put in overtime to make sure LTL shipments arrived on time. Teamwork between the line haul department, dispatchers and drivers helped move freight around the storm as highways began to open up again.

Con-way Freight’s vast network of service centers, trucks and trailers allows us to adapt whatever conditions winter brings. And with employees like Jeff and Damian to execute critical adjustments within the network, customer freight doesn’t get left out in the cold.

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Balancing Network Circuity and Density

January 20th, 2010 Sean Devine No comments

We’re pleased to finally be operational with the latest optimizations to our freight flow.  We implemented this latest round of network adjustments on Monday, January 11th. They are the latest in a series of high-impact changes that we’ve made to our network during the last two years. The changes adjusted the flow of freight in a few key corridors to run more direct paths where we have the density required to do so efficiently.

To make it easy to understand what we changed, we (thanks Olga) graphed the freight flows on Thursday, January 7th and Thursday, January 14th for the load plan legs that connect Houston, Texas and Burlington, Vermont.

The orange line shows the old flow. The size of the line is the total volume of freight travelling on that linehaul leg. We used to travel way out of the way and risked getting caught in the snow in the Midwest while moving freight from Texas to New England. Through analysis by our linehaul team, we were able to find the more direct blue route with high enough density to reduce the total number of miles that we drive. This path also helps avoid some of the winter weather that can threaten on-time service performance.

Hundreds of adjustments like this were made to our network last week. We’re excited by the positive impact that these changes will make to our service levels and cost structure. Enjoy!

Velocity vs Speed

September 22nd, 2009 Sean Devine 1 comment

You may (but probably not!) have noticed that I now refer to transit time concepts as “velocity” instead of “speed”. The reason is to emphasize the purposefulness of our network. Here are the definitions (in case you’re also having a tough time recalling the lectures of your 11th grade physics teacher!):

Speed: The rate of motion.

Velocity: The rate of change of position.

It doesn’t help our customers if we’re moving their freight fast but in the wrong direction.

Working Together as Individuals Has Its Limits

August 1st, 2009 Sean Devine No comments

Before moving to Michigan I lived in beautiful Marblehead, MA, but spent over 2 hours every workday commuting to and from Burlington, MA. So, when I saw Jason Kottke link to an article about an academic study that explains one way to improve the flow of traffic in the Boston area, I took notice. In short, the study shows that letting each commuter pursue the route that improves their individual drive time increases the total drive time of all drivers. It also compares and contrasts that finding with research that shows that increasing confusion (as happens when drivers approach roundabouts with little signage) can actually improve traffic safety.

But maybe these two traffic models have more in common than it first seems. Both encourage individuals to drive more slowly so that everyone gets to his destinations faster. Both favor a holistic approach to traffic, one that designs from the perspective of the overall flow rather than that of an individual driver.

While its nice to think that a whole network can be optimized by letting the participants in the network pursue their individual goals, reality is more complicated when the individual incentives don’t match the network objective.

Federalism and LTL Network Management

July 22nd, 2009 Sean Devine Comments off

Running a less-than-truckload network presents the same management paradox described in this New Yorker article on federalism. We need to rely on local teams to make local improvements while reserving central control for network improvements.

The tension between state and national interests isn’t new: it dates back to clashes in the early Republic over programs for “internal improvements.” Of course, the federal government is far bigger than it once was, and yet in the past two decades we’ve delegated more authority, not less, to the states. The logic of this was clear: people who are closer to a problem often know better how to deal with it. But matters of a truly interstate nature, like the power grid, can’t be dealt with on a state-by-state basis. And fiscal policy is undermined if the federal government is doing one thing and the states are doing another. It’s a global economy. It would be helpful to have a genuinely national government.

That’s why we unified our operating model, simplified our network, and standardized on Lean Six Sigma for continuous improvement.

Managing this tension is one of the keys to True LTL.

via The fifty states are hurting economic recovery : The New Yorker.