Peter Swan of Penn State – Harrisburg and Michael Belzer of Wayne State University will present the findings of their study, "Empirical Evidence of Toll Road Traffic Diversion and Implications for Highway Infrastructure Privatization" on Jan. 14 at the 87th annual meeting of the Transportation Research Board in Washington, D.C.
The study used data from the State of Ohio, the Federal Highway Administration, and the Ohio Turnpike to predict annual Turnpike truck vehicle miles traveled, and therefore diverted vehicle miles, based on National truck traffic and Turnpike rates. The researchers then compare estimated truck traffic diverted from the Turnpike to truck traffic on Ohio road segments on possible substitute routes.
Both economic models support the hypothesis that rate increases divert traffic from toll roads to "free" roads.
"While recently privatized roads do not have enough history to determine how high actual rates will rise, adequate data do exist to determine what happens when toll rates increase dramatically on state-run toll roads," says co-author Peter Swan, Assistant Professor of Logistics and Operations Management at Penn State's Harrisburg campus.
The study concludes that if governments allow private toll road operators to maximize profits, higher tolls will divert trucks to local roads, depending on the suitability of substitute roads. The authors estimate that for 2005, a for-profit, private operator of the Ohio Turnpike could have raised tolls to roughly three times what they were under the public turnpike authority, resulting in about a 40% diversion of trucks from the Ohio Turnpike to other roads.
"The Ohio Turnpike substantially increased tolls during the 1990s to help finance construction of a third lane in each direction over substantial portions of the Turnpike," the researchers say. "Because the Ohio Turnpike raised its rates for trucks in the 1990s and later lowered them again, sufficient data exist to calculate a demand curve for the Turnpike based on demand and the toll rate. We then use the resulting demand curve to estimate diversion of trucks caused by the changes in the toll rates and to forecast how toll rates might affect Turnpike truck revenue."
The number of diverted trucks is important to both the State of Ohio and the Nation for economic and social reasons.
First, many of the substitute roads are two-lane highways with crash rates many times that of the Turnpike. Second, the increased traffic has reduced the quality of life for communities located along diversion routes and dramatically increased the maintenance costs of many of these roads, say the researchers.
Finally, higher truck tolls have two negative effects on the economy. Motor carriers eventually pass all tolls to consumers in the form of higher prices for goods. While higher toll rates may not decrease the efficiency of non-diverted trucks, they have raised costs.
Furthermore, diversion reduces the efficiency of these trucks because they clearly are taking a second-best route. The resulting loss of efficiency can stifle economic activity, according to the study.
Many of these economic and social costs may not be considered in future leases or sales, especially when such costs are paid by people in states other than the one making the lease agreement.
The study researchers question whether it makes good policy sense to substitute the existing fuel tax-based system of funding road infrastructure with a system that uses widespread tolls and to grant long-term leases to private enterprises that will operate them for profit.
"The combination of inadequate maintenance, lack of capital for new capacity, and ever-growing demand has led to renewed calls for tolls," Swan and Belzer state. "It is curious that national policy clearly supports sales or long-term leases of roads to private parties when such negative results can be expected.
"It does not appear that the U.S. Department of Transportation has considered how far tolling and highway privatization should go ... how such a market-based system of interstate highways will affect the parallel system of publicly-owned state and local roads ... or the effect of private tolling on interstate commerce - unless U.S. DOT is already committed to the toll-based funding for all roads."
"If the true problem is that political leaders are unwilling to face the voters with the reality that there is no free lunch, then the problem we seek to solve by tolling and privatization will not solve the problem at all. In fact, our research suggests that it will only make the problem worse," Swan and Belzer say.
Steve Hevner | EurekAlert!
Tool helps cities to plan electric bus routes, and calculate the benefits
09.01.2017 | International Institute for Applied Systems Analysis (IIASA)
Realistic training for extreme flight conditions
28.12.2016 | Technical University of Munich (TUM)
In the field of nanoscience, an international team of physicists with participants from Konstanz has achieved a breakthrough in understanding heat transport
Cells need to repair damaged DNA in our genes to prevent the development of cancer and other diseases. Our cells therefore activate and send “repair-proteins”...
The Fraunhofer IWS Dresden and Technische Universität Dresden inaugurated their jointly operated Center for Additive Manufacturing Dresden (AMCD) with a festive ceremony on February 7, 2017. Scientists from various disciplines perform research on materials, additive manufacturing processes and innovative technologies, which build up components in a layer by layer process. This technology opens up new horizons for component design and combinations of functions. For example during fabrication, electrical conductors and sensors are already able to be additively manufactured into components. They provide information about stress conditions of a product during operation.
The 3D-printing technology, or additive manufacturing as it is often called, has long made the step out of scientific research laboratories into industrial...
Nature does amazing things with limited design materials. Grass, for example, can support its own weight, resist strong wind loads, and recover after being...
Nanometer-scale magnetic perforated grids could create new possibilities for computing. Together with international colleagues, scientists from the Helmholtz Zentrum Dresden-Rossendorf (HZDR) have shown how a cobalt grid can be reliably programmed at room temperature. In addition they discovered that for every hole ("antidot") three magnetic states can be configured. The results have been published in the journal "Scientific Reports".
Physicist Dr. Rantej Bali from the HZDR, together with scientists from Singapore and Australia, designed a special grid structure in a thin layer of cobalt in...
13.02.2017 | Event News
10.02.2017 | Event News
09.02.2017 | Event News
24.02.2017 | Life Sciences
24.02.2017 | Life Sciences
24.02.2017 | Trade Fair News