Transportation problems of large urban conurbations inspire search for new transportation systems, that meet high environmental standards, are relatively cheap and user friendly. The latter element also includes the needs of disabled and elderly people. This article concerns a new transportation system PRT - Personal Rapid Transit. In this article the attention is focused on the analysis of the...

Altered bowel habit commonly occurs in thyroid disease. We measured orocaecal transit in healthy volunteers and in hyperthyroid and hypothyroid patients before and after treatment, using the lactulose hydrogen breath test incorporating a standard liquid meal to obtain a more physiological assessment. Mean transit time in 12 control subjects was 85 (8) minutes (mean (SE)) (mean coefficient of va...

This paper focuses on the railway rolling stock circulation problem in rapid transit networks, in which frequencies are high and distances are relatively short. Although the distances are not very large, service times are high due to the large number of intermediate stops required to allow proper passenger flow. The main complicating issue is the fact that the available capacity at depot statio...

Bus Rapid Transit (BRT) is a relatively new concept in the United States and is rapidly gaining in popularity. In 1998, the Federal Transit Administration started a program to encourage communities to invest in BRT. Today, a number of cities have begun developing BRT systems, while others are actively considering BRT investments. At the same time, recent research shows that BRT can meet or achi...

This paper examines a multi-period capacity expansion problem for rapid transit network design. The capacity expansion is realized through the location of train alignments and stations in an urban traffic context by selecting the time periods. The model maximizes the public transportation demand using a limited budget and designing lines for each period. The location problem incorporates the us...

s ytrain is one of the most accessile—in terms of barrier-free access for elderly and handicapped passengers—rapid transit systems in the world. Accessibility is not merely a feature of design, but also part of operations and education, safety, and emergency procedures. Skytrain was initiated by the British Columbia provincial government in 1980. Construction began in 1982, and Phase I went int...

This article uses a trip attribute approach to examine the relative passenger attractiveness of Bus Rapid Transit (BRT) systems compared to other transit modes. It examines how passengers value trip attributes for on-street bus, BRT, and light rail and heavy rail systems in passenger behavior research. Empirical data is presented which suggests that passengers value trip attributes for BRT and ...

Morphine was used as a remedy for the control of diarrhea centuries before it's sedative-analgesic effect was discovered. Although several mechanisms have been proposed for the morphine-induced inhibition of gastrointestinal transit (OIT), the exact mechanism has not yet been identified. On this basis the possible involvement of the dopaminergic system in morphine-induced inhibition of tra...

This paper identifies the opportunities for making significant improvements to bus transit operations by combining a variety of technical and service innovations that have heretofore been treated separately. Recently, increased attention has been devoted to “bus rapid transit” as an operational concept for enabling buses to provide a level of service closer to that normally only achievable in m...