Tolling U.S. Highways (CRS Report for Congress)
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| Release Date |
Revised Aug. 26, 2016 |
| Report Number |
R43575 |
| Report Type |
Report |
| Authors |
Robert S. Kirk, Specialist in Transportation Policy |
| Source Agency |
Congressional Research Service |
| Older Revisions |
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Summary:
Toll roads have a long history in the United States going back to the early days of the republic. During the 18th century, most were local roads or bridges that could not be built or improved with local appropriations alone. During the tolling boom of the late 1940s and early 1950s, the prospect of toll revenues allowed states to build thousands of miles of limited-access highways much sooner than would have been the case with traditional funding. The imposition of tolls on existing federal-aid highways is restricted under federal law, and while new toll facilities have opened in several states, some of those projects have struggled financially.
The failure of federal highway user taxes and fees to provide sufficient revenues to fund the surface transportation program authorized by Congress beginning in FY2008 renewed interest in expanded toll financing. The recently passed five-year surface transportation act, the Fixing America's Surface Transportation Act (FAST Act; P.L. 114-94), made few changes in tolling policy. Nonetheless, the Congressional Budget Office (CBO) projects that annual highway revenues, mostly from motor fuels taxes, will fall an average of $20 billion short of the amount needed to sustain the current federal surface transportation program between FY2021 and FY2025. This impending shortfall could again revive congressional interest in tolling.
Congress could achieve an expansion of tolling in several ways. At one extreme, it could simply encourage tolling pilot projects on federal-aid highways, of which relatively few have been implemented to date. At the other extreme, Congress might authorize states to toll federal-aid highways as they see fit, or even require that Interstate Highway segments be converted to toll roads as they undergo reconstruction in the future, eventually turning all Interstates into toll roads.
Whatever policies Congress adopts, tolls are likely to play only a limited role in funding surface transportation projects. The costs of toll collection on many existing toll roads exceed 10% of revenues even if all tolls are collected electronically, not including the cost of toll collection infrastructure. This compares unfavorably to the cost of collecting the existing federal motor fuels taxes, estimated to be about 1% of revenues. Many roads may not have sufficient traffic willing to pay a high enough toll to cover construction, maintenance, and toll collection costs. The availability of competing non-tolled routes may allow motorists to evade tolls. In addition, political concerns often limit the ability of operators to raise toll rates.
Beyond a requirement that bridge tolls "shall be just and reasonable" and a provision limiting tolls on over-the-road buses, current federal law provides no role for the federal government in regulating toll rates or practices. A number of states offer preferential tolls for in-state residents or residents of particular localities. Some states have attempted to collect tolls at borders rather than at internal locations where more residents would be affected, and in a number of places trucking interests have complained that truck tolls are excessive compared to auto tolls. More widespread use of tolls is likely to raise questions about the extent to which tolling should be subject to federal oversight.
