The Congestion Relief Benefit of Public Transit. Evidence from Rome

Martin Adler, Federica Liberini, Jos van Ommeren, Antonio Russo

Research output: Contribution to journalArticlepeer-review

5 Citations (SciVal)


We estimate the effect of public transport supply on travel times of motor-vehicle and bus users in Rome, Italy. We apply a quasi-experimental methodology exploiting hourly information on public transport service reductions during strikes. We find that a 10 percent reduction in public transit supply increases the travel time of motor-vehicles by about 1.6 percent in the morning peak. The effect on bus travel time is similar. The congestion-relief benefit of public transport is thus sizeable and bus travel time gains account for an important share of it. We also examine the welfare effects of providing bus lanes. All else given, a bus lane reduces bus travel time by at least 29 percent. We find that bus lanes are undersupplied in Rome, despite the potential costs due to reducing capacity available to cars.
Original languageEnglish
JournalJournal of Economic Geography
Publication statusPublished - 31 Dec 2020


Dive into the research topics of 'The Congestion Relief Benefit of Public Transit. Evidence from Rome'. Together they form a unique fingerprint.

Cite this