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- Dziekan, Katrin, et al.
(författare)
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Dynamic At-stop Real-time Information Displays for Public Transport : Effects on Customers
- 2007
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Ingår i: Transportation Research Part A. - Oxford : PERGAMON-ELSEVIER SCIENCE LTD. - 0965-8564 .- 1879-2375. ; 41:6, s. 489-501
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Tidskriftsartikel (refereegranskat)abstract
- Dynamic at-stop real-time information displays are becoming more and more ubiquitous in modern public transport. Reactions and attitudes towards these systems are very positive. But there is a need to provide a comprehensive framework of the possible effects that these kinds of displays can have on customers. The seven main effects described in this paper are: (A) reduced wait time, (B) positive psychological factors, such as reduced uncertainty, increased ease-of-use and a greater feeling of security, (C) increased willingness-to-pay, (D) adjusted travel behaviour such as better use of wait time or more efficient travelling, (E) mode choice effects, (F) higher customer satisfaction and finally (G) better image. Two studies are presented in this paper. Study I supports and proves that perceived wait times can be reduced by 20% by employing a before-after implementation evaluation study with questionnaires on a tramline. Study II shows the effects of real-time displays on behaviour in the form of adjusted walking speeds, by using a behaviour observation method in a subway station. The effect framework does not claim completeness and many effects are related to each other. However, the framework is a useful basis for designing evaluation studies and provides arguments in favour of at-stop real-time information displays.
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- Fröidh, Oskar, et al.
(författare)
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Green Train : Comfort evaluation of active secondary suspension
- 2013
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Rapport (övrigt vetenskapligt/konstnärligt)abstract
- One of the ideas selected for development in the Green Train research and development programme is active secondary suspension. Bombardier Transportation, Sweden, has with support of KTH designed and tested both active lateral suspension (ALS) and active vertical suspension (AVS) that can improve the ride comfort and make higher speeds possible on existing tracks. The two active suspension systems were evaluated with passengers to allow KTH Railway Group to capture their perceived differences in ride comfort.Our conclusion is that active secondary suspension (ALS/AVS) improves perceived comfort and makes it easier for passengers to move about the train while it is motion while an increase in speed (from category B to category C) has an opposite effect of approximately the same magnitude. This shows that active secondary suspension can contribute to permitting higher speeds on conventional lines with imperfect track geometry.The higher uncompensated lateral force on bends resulting from higher speeds (category C), however, makes it significantly more difficult to move about the train for travellers with reduced mobility and this needs to be taken into consideration.
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- Fröidh, Oskar, et al.
(författare)
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Green Train concept and interior design
- 2014
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Ingår i: International Journal of Rail Transportation. - : Taylor & Francis Group. - 2324-8378 .- 2324-8386. ; 2:1, s. 28-39
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Tidskriftsartikel (refereegranskat)abstract
- In the Green Train research programme, the objective is to develop an attractive trainconcept in the form of a concept proposal based on economic assessments. Green Trainis to be an attractive express train for both business and leisure-time travellers. Highstandards of comfort can be motivated by passengers’ willingness to pay. One fundamentalidea is the wide carbody for services in Scandinavia to achieve lower total costsfor train traffic than a carbody with a normal, quite narrow European continentalprofile. The trains are thereby made shorter and 2 + 3 seating arrangements areoptimised for optimal comfort. Another principle is that the train must be designedto allow punctual station stops, also during periods of peak load. Boarding andalighting must take place within very tight margins, which means that doors, entrancesand luggage racks must be in well-considered locations and correctly dimensioned.
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