Sökning: "Clas Rydergren"

Visar resultat 1 - 5 av 16 avhandlingar innehållade orden Clas Rydergren.

1. 1. Decision Support for Strategic Traffic Management : An Optimization-Based Methodology

   Författare :Clas Rydergren; David P. Watling; Linköpings universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

   Sammanfattning : Strategic traffic management aims at the improvement of the functionality of the traffic network. This functionality is typically expressed in terms of the traffic flows and the travel times in the network. In this thesis a methodology for decision support in long-term traffic management is proposed. LÄS MER

3. 2. Highway Traffic State Estimation and Short-term Prediction

   Författare :Andreas Allström; Jan Lundgren; Clas Rydergren; Balázs Adam Kulcsár; Linköpings universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES;

   Sammanfattning : Traffic congestion is increasing in almost all large cities, leading to a number of negative effects such as pollution and delays. However, building new roads is not a feasible solution. Instead, the use of the existing road network has to be optimized, together with a shift towards more sustainable transport modes. LÄS MER

4. 3. Exploring societal impacts of self-driving public transport using four-step transport models

   Författare :Erik Almlöf; Mikael Nybacka; Erik Jenelius; Mia Hesselgren; Clas Rydergren; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Self-driving vehicles; Public transport; Four-step transport model; Societal impacts; Sampers; Machine Design; Maskinkonstruktion;

   Sammanfattning : During the last decade, self-driving technology has become increasingly visible in the news, with the vision that people would enter vehicles that drive themselves, and that people could instead rest, read the newspaper, or have a meeting. However, these visions have mainly focused on the potential for car usage, even though public transport could benefit greatly from self-driving technology. LÄS MER

5. 4. Mode choice modelling of long-distance passenger transport based on mobile phone network data

   Författare :Angelica Andersson; Maria Börjesson; Ida Kristoffersson; Clas Rydergren; Leonid Engelson; Jonas Westin; Linköpings universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Demand model; Mode choice; Latent class; Mobile phone network data; Travel behaviour; Long-distance travel;

   Sammanfattning : Reliable forecasting models are needed to achieve the climate related goals in the face of increasing transport demand. Such models can predict the long-term behavioural response to policy interventions, including infrastructure investments, and thus provide valuable pre-dictions for decision makers. LÄS MER

7. 5. Analysis of Travel Patterns from Cellular Network Data

   Författare :Nils Breyer; Clas Rydergren; David Gundlegård; Győző Gidófalvi; Linköpings universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES;

   Sammanfattning : Traffic planners are facing a big challenge with an increasing demand for mobility and a need to drastically reduce the environmental impacts of the transportation system at the same time. The transportation system therefore needs to become more efficient, which requires a good understanding about the actual travel patterns. LÄS MER