The objective of this paper is to highlight important differences between taxis and transportation network companies (TNCs) in a large urban area. We analyze the publicly available dataset from Chicago which includes taxi and transportation network company (TNC) utilization and the level of service measures from five months in 2013–2014 and the same five months in 2018–2019. We compare and contrast the data from these two points in time to document utilization of taxis and TNCs and to measure differences in travel times, travel distances, fares, destinations served, and the spatial and temporal distribution of these trips. Travel to and from airports has been evaluated separately owing to the exceptionally high number of trips they generate. Striking differences between pooled and unpooled TNC trip volumes and other travel metrics have been assessed to highlight their operational diversity despite being considered as the same mode. The exploratory analysis has been carried out across the shared-ride, time, and mode dimensions. The study revealed both similarities and differences in taxi trip characteristics between the two evaluation periods and also outlined how the ridehailing market has grown over the years despite the near stagnation in population and employment in the city. We believe that assessing how taxis have fared through this time and highlighting the intrinsic differences between how the old and new mode of on-demand ride services coexist is important. This study aims to help understand how new-age mobility services are impacting transportation in one of the largest cities in the U.S.

本文的目的是强调大城市中的出租车与交通网络公司（TNC）之间的重要区别。我们分析了来自芝加哥的公开可用数据集，其中包括出租车和运输网络公司（TNC）的利用率以及2013-2014年五个月和2018-2019年相同五个月的服务措施水平。我们比较和对比了这两个时间点的数据，以记录出租车和TNC的利用率，并测量出行时间，出行距离，票价，所服务的目的地以及这些行程的时空分布的差异。由于往返机场产生的旅行次数异常多，因此已分别评估了往返机场的旅行。尽管被认为是同一模式，但已经评估了合并和非合并TNC行程量与其他行程指标之间的惊人差异，以突出其操作多样性。探索性分析已在共享骑行，时间和方式维度上进行。该研究揭示了两个评估期之间出租车出行特征的异同，并概述了多年来尽管城市人口和就业停滞不前的拼车市场是如何发展的。我们认为，评估出租车在这段时间内的表现并强调新旧的按需乘车服务模式共存之间的内在差异非常重要。