Ayush Pandey

University of Illinois, Urbana-Champaign | UIUC · Department of Civil and Environmental Engineering

Transit agencies have been removing a large number of bus stops, but discussions around the bus stop spacings exhibit a lack of clarity and data for comparison. This paper proposes new terminology and concepts for statistical consideration of stop spacings, and introduces a python package and open-source database which uses General Transit Feed Spe...

This paper incorporates two novelties into steady-state, macroscopic models of street-hail taxi service: (i) heterogeneous drivers; (ii) explicit treatment of a competitive rental market for medallions (the rights to cruise for passengers). When drivers vary only by reservation wage, issuing medallions raises every driver’s take-home pay, and the s...

This paper incorporates two novelties into steady-state, macroscopic models of street-hail taxi service: (i) heterogeneous drivers; (ii) explicit treatment of a competitive market for medallions (the rights to cruise for passengers). When drivers vary only by reservation wage, the social optimum requires subsidy, the second-best does not require me...

This paper considers static models of traffic in downtowns which can produce multiple equilibria. Models with one mode of travel can have one equilibrium in the light congestion regime, and multiple in hypercongestion. Models with two modes, which differ by occupancy, can have multiple in hypercongestion and in light congestion due to mode-switchin...

This article introduces a database of bus stop spacings for 43 cities in the United States derived from GTFS files published in late 2019. Weighting each spacing by the number of times a bus traverses it, we produce distributions and summary statistics. The overall mean spacing is 313 meters. Las Vegas’ RTC has the widest mean spacing (482 m) and P...

Systems that depend on matching often exhibit scale economies, whereby increased participation leads to improved performance for all users. This paper examines the presence of such increasing returns to scale in carpool matching. Data from Scoop, a carpooling app, is used to demonstrate this phenomenon across various markets using regression. As th...

Static traffic models, in the tradition of Walters (1961), typically feature a "demand curve" giving the vehicle flow demanded for each unit travel time (inverse speed). Traditionally, the demand curve declines because people want to drive more as travel times fall. This paper proposes that the vehicle flow demanded can, instead, plausibly rise wit...

Static traffic models, in the tradition of Walters (1961), typically feature a "demand curve" giving the vehicle flow demanded for each unit travel time (inverse speed). Typically, the demand curve declines because people want to drive more as travel times fall. This paper proposes that the vehicle flow demanded can plausibly rise with unit travel...