The MEPLAN models of Bilbao,Leeds and Dortmund

A trio of closely related land‐use/transport interaction models was developed using Marcial Echenique & Partners’ software package MEPLAN. The models were for the cities of Bilbao, (Spain), Dortmund (West Germany) and Leeds (England). All were calibrated using data drawn from earlier studies. The three models were used to predict the effects (relative to a base case) of a common programme of land‐use and transport policies or scenarios. This paper explains briefly the theoretical basis of the MEPLAN package as applied to urban models such as these three; describes the types of policies that have been assessed; and presents some of the key results.     

The challenge of railway policy in Europe

A conference organized in December 1993 by ESTI and CER discussed the major challenges facing the European railway industry. There are great opportunities in prospect for such an environmentally friendly industry, but there are many structural, financial and operational problems to overcome. The 1991 European Union Policy laid down the separation of the management of operation and infrastructure from the provision of railway transport services: measures for improving the financial structure of undertakings; and the introduction of international competition. The conference discussed the progress in restructuring, technical harmonization and interoperability and the practical issues involved in introducing competition.     

Transport in a high‐density urban environment: the experience of Hong Kong

In Hong Kong the high cost of land reclamation servicing has made it necessary to plan land use through zoning commercial and industrial activity and by adopting very high densities for residential accommodation. Traffic has concentrated along particular corridors where its volume now exceeds road capacity. The imperative development of an urban rail system has affected the economic stability of most public transport. Simultaneously, private motoring has increased so rapidly that fiscal restraints have been imposed, generating a serious proposal for electronic road pricing. The future growth of links with China will end Hong Kong's relative isolation and present new transport planning challenges.     

Transportation survey and rideshare matching model for rural communities

A simple and flexible low technology rideshare matching model was developed for a rural area. A brief survey form provided information on distance to work, fuel consumption and currently used transportation mode in conj unction with information on employment location and work schedule. The model developed used a computerized system for proximity matching of potential ride sharers. An existing computer program with detailed modifications was used for data analysis. Unlike other rideshare matching programs, this model relies on grouping by community names to match riders.     

Knowledge based decision support in airport terminal design

The state of the art in airport terminal design has essentially remained unchanged since the 1970s, relying on the use of detailed simulation together with empirical and statistical formulae for sizing the terminal. Air transport has altered considerably since then, with increased use of air travel for both business and leisure, together with the increased use of ‘hub’ terminals in which the terminal acts as an interchange stop on a journey involving several flights. The use of simulation involves a detailed analysis of the terminal design under one set of conditions. To change the design or operating conditions involves a complete resimulation using the new design parameters which is time consuming and computationally expensive.

By using a knowledge based approach, a system can be provided which has the flexibility and speed required to explore the consequences of implementing design decisions in a variety of conditions, together with the ability to use and alter facility sizing methodologies to reflect current and future design guidelines.     

Forecasting bus ridership using a “Blended Approach”

Transportation - As sources of “Big Data” continue to grow, transportation planners and researchers seek to utilize these new resources. Given the current dependency on traditional...     

Happy today,satisfied tomorrow: emotion—satisfaction dynamics in a multi-week transit user smartphone survey

Transportation - Travel well-being encompasses three dimensions: cognitive satisfaction judgments, positive emotions, and negative emotions. Most previous literature on transit users focused either...     

顶湖—仙渡345 kV地下输电线路工程设计与施工

因都会区用电量增加,且为减低输电线路对市区景观及环境冲击,台电公司于台北市北投区大度路旁兴建地下电缆洞道,由顶湖超高压变电所引入345 kV二回线至仙渡超高压变电所。采用潜盾工法以降低交通及环境冲击的问题,因施工遭遇软硬不同土层及高水压影响,且穿越捷运淡水线关渡隧道下方,紧邻大度陆桥,因此在设计上采用大洞道方案、2道止水条、发进井调整位置及角度等方案,以降低施工对于附近结构物之冲击。     

橡胶沥青的输送和计量

橡胶沥青作为道路工程中的高温、高粘度介质,想要成功地将其泵送可能并不容易,而进行橡胶沥青的计量则更具挑战性。由于胶粉的磨蚀性,使用机械式的齿轮流量计已被证明是不可靠的。因为随着时间的推移,胶粉对齿轮的磨损会造成啮合齿轮打滑,由此造成的测量误差会超过精度许可范围。