Swissmetro

The SwissMetro is a proposed major innovation to the Swiss transport system: an underground mag-lev system to connect the major urban centres in Switzerland. As part of the various assessment studies carried out so far, Abay (1999) conducted a substantial RP/SP survey of longdistance road and rail travellers using a two-stage survey method. First, the respondents were interviewed or observed about a current trip. Based on this trip SP exercises were generated, which the respondent answered in turn. This dataset consists of survey data collected on the trains between St. Gallen and Geneva, Switzerland, during March 1998. The respondents provided information in order to analyze the impact of the modal innovation in transportation, represented by the Swissmetro, a revolutionary mag-lev underground system, against the usual transport modes represented by car and train. The Swissmetro is a true innovation. It is therefore not appropriate to base forecasts of its impact on observations of existing revealed preferences (RP) data. It is necessary to obtain data from surveys of hypothetical markets/situations, which include the innovation, to assess the impact. Survey data were collected on rail-based travels, interviewing 470 respondents. Due to data problems, only 441 are used here. Nine stated choice situations were generated for each of 441 respondents, offering three alternatives: rail, Swissmetro and car (only for car owners). A similar method for relevant car trips with a household or telephone survey was deemed impractical. The sample was therefore constructed using license plate observations on the motorways in the corridor by means of video recorders. A total of 10529 relevant license plates were recorded during September 1997. The central Swiss car license agency had agreed to send up to 10000 owners of these cars a survey-pack. Until April 1998, 9658 letters were mailed, of which 1758 were returned. A total of 1070 persons filled in the survey completely and were willing to participate in the second SP survey, which was generated using the same approach used for the rail interviews. 750 usable SP surveys were returned, from the license-plate based survey.

瑞士捷运（SwissMetro）是一项面向瑞士交通系统的重大创新性提案：一种用于连接瑞士各主要城市中心的地下磁悬浮（mag-lev）系统。作为当前已推进的各类评估研究的组成部分，Abay（1999）采用两阶段调查方法，针对长途公路与铁路出行者开展了大规模的揭示偏好/陈述偏好（Revealed Preference/Stated Preference，简称RP/SP）调查。首先，研究人员会对受访者的当前出行进行访谈或观察；基于该次出行场景生成陈述偏好（Stated Preference，SP）情境题，由受访者依次完成作答。本数据集包含1998年3月期间，在瑞士圣加仑（St. Gallen）与日内瓦（Geneva）之间的列车上收集的调查数据。受访者提供的信息将用于分析以瑞士捷运（SwissMetro）这一革命性地下磁悬浮系统为代表的交通模式创新，对比以私家车与铁路为代表的常规交通模式时所产生的影响。瑞士捷运属于真正意义上的交通创新，因此无法仅基于现有揭示偏好（Revealed Preference，RP）数据对其影响进行预测。为此需通过包含该创新方案的假想市场或情境调查获取数据，以评估其影响效果。针对铁路出行群体的调查共访谈了470名受访者，因数据质量问题，本数据集仅使用其中441份有效样本。研究为这441名受访者各生成了9种陈述选择情境，提供三种出行方案供选择：铁路、瑞士捷运（SwissMetro）以及私家车（仅面向私家车车主）。若采用家庭访谈或电话调查的方式针对相关私家车出行开展同类调查，则被认为不具备可行性。因此，研究通过录像机记录该走廊沿线高速公路上的车牌信息来构建私家车出行者的样本。1997年9月期间，研究共记录到10529条有效车牌信息。瑞士中部车辆牌照管理机构已同意向其中最多10000名车主邮寄调查包。截至1998年4月，研究共寄出9658份调查问卷，回收1758份。共有1070名受访者完整填写了问卷，并愿意参与第二轮陈述偏好（Stated Preference，SP）调查；该轮调查采用与铁路出行群体访谈相同的方法生成情境题。基于车牌信息招募的调查样本最终回收了750份有效陈述偏好问卷。