Monetising time savings makes toll roads financially stack up, says research

Putting a financial value on the savings from traffic congestion, noise and air pollution as a result of toll roads and tunnels will make large infrastructure projects more cost effective, according to a new study by Australia’s Queensland University of Technology (QUT). Sae Chi, from the university’s Science and Engineering Faculty, has compared the financial and economic cost of public and privately operated toll roads and tunnels, and found the net impacts to the community should be taken into account
September 29, 2017 Read time: 2 mins
Putting a financial value on the savings from traffic congestion, noise and air pollution as a result of toll roads and tunnels will make large infrastructure projects more cost effective, according to a new study by Australia’s Queensland University of Technology (QUT).


Sae Chi, from the university’s Science and Engineering Faculty, has compared the financial and economic cost of public and privately operated toll roads and tunnels, and found the net impacts to the community should be taken into account in decision-making about transport infrastructure investment.

The research has been published in the Journal of Transportation Engineering titled Measuring impacts and risks to the public of a privately operated toll road project by considering perspectives in cost-benefit analysis.

The report claims that the financial bottom line should not be the only consideration when determining whether or not to invest in toll roads and tunnels.

Governments often partner with the private sector to share the costs and risks of building and operating toll road and tunnel projects. However, the report says that while private operators were looking for a bottom line return on investment, governments needed to consider benefits in addition to toll charges and traffic flows that can result in profits. Even when partnering with the private sector, it is important that governments consider the public benefits and monetise savings such as travel time, reduced costs to drivers and the positive outcomes for the environment. Chi believes that when governments put a financial cost on these factors the cost-benefit analysis sways much more heavily in favour of supporting infrastructure investment.

Chi said current cost-benefit analysis for road and tunnel projects was limited in Australia, and in most cases focused on the financials and not the public benefits. “But governments are responsible for public decision making for the good of their constituents and this includes ensuring that public funds are invested wisely and that regulation of private sector activity ensures a net benefit to society,” she said.

Chi believes the study findings would help support increased infrastructure investment across the nation, especially in high-growth population areas.

Charging, Tolling & RUC

Related Content

  • February 20, 2019
    CES 2019 says hello to the future
    The launch of the latest gadgets has made the Consumer Electronics Show into tech heaven for geeks worldwide – but there is a serious ITS component, too. Ben Spencer braves the bright lights of Las Vegas to find out more The Consumer Electronics Show (CES) has been the showcase for some of the world’s most iconic gadgets – from VCRs to the Commodore 64, and from the camcorder to the launch of HDTV. This has made CES a mecca for tech heads all over the world since it began in the 1960s, but these days it
    Read More
  • July 8, 2019
    London needs just one road user charge, says report
    London’s patchwork of road charging schemes should be replaced by a single, distance-based user charge, according to new research. Apart from anything else, it would be much fairer… The UK capital’s multiple road charging schemes require a radical overhaul, according to a new report by the Centre for London thinktank. The suggested solution is to replace existing levies on drivers with a single, distance-based user charge which would more fairly reflect how much, and at what time, people are using London
    Read More
  • October 22, 2018
    The long road to Spanish enlightenment
    Julián Núñez, immediate past president of ASECAP, gets his teeth into the vision of a European strategy for toll roads. David Arminas reports from Madrid. Getting European politicians to agree to a long-term cross-border highway infrastructure programme for toll roads is extremely difficult. It’s a bit like pulling teeth: people want to avoid the pain. But pain is something that Spanish operators, including Abertis, OHL, ACS, FCC and Acciona, have been going through for the past decade. The country has
    Read More
  • December 16, 2015
    Rosa Rountree calls for clarity and consistency
    Rosa Rountree campaigns for accurate and consistent figures for the tendering of tolling concessions. If there is one thing about which Rosa Rountree is passionate, it’s numbers. That’s not surprising for a graduate accountant, but it is not only the quarterly accounts that concern the CEO and president of Egis Projects USA.
    Read More

Highlighted Content