Sökning: "traffic safety"

Visar resultat 11 - 15 av 364 avhandlingar innehållade orden traffic safety.

1. 11. Computer Vision for Automated Traffic Safety Assessment : A Machine Learning Approach

   Författare :Martin Ahrnbom; Mathematical Imaging Group; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Computer vision; Deep learning; Machine learning; Traffic Surveillance; Traffic Safety; Object detection; Camera Calibration; Multi-Target Tracking; Convolutional Neural Networks; Smart cities;

   Sammanfattning : Traffic safety is a complex and important research area with the potential to save many lives in the future. Two key problems are considered, namely the gathering of reliable and detailed road user statistics which can be used to estimate the safety of a traffic environment and taking advantage of surveillance infrastructure to guide and assist vehicles in real time, primarily autonomous ones. LÄS MER

3. 12. Trafikslag på undantag : Cykeltrafiken i Stockholm 1930-1980

   Författare :Martin Emanuel; Arne Kaijser; Mikael Hård; KTH; []
   Nyckelord :HUMANIORA; HUMANITIES; bicycle traffic; bicycle planning; city traffic regime; Copenhagen; Denmark; history; history of technology; ideology; materialised interpretation; representation; Stockholm; Sweden; traffic engineering; traffic planning; traffic policy; 20th century; urban history; urban planning; 1900-talet; cykeltrafik; cykelplanering; Danmark; ideologi; Köpenhamn; materialiserad tolkning; representation; stadshistoria; stadsplanering; stadstrafikregim; Stockholm; Sverige; teknikhistoria; trafikteknik; trafikplanering; trafikpolitik;

   Sammanfattning : The modal share of bicycle traffic in Stockholm increased from 20 per cent to over 30 per cent during the 1930s, and reached staggering levels during World War Two – peaking at over 70 per cent. Soon after the war, however, the share declined rapidly. LÄS MER

4. 13. Drivers overtaking cyclists and pedestrians: Modeling road-user behavior for traffic safety

   Författare :Alexander Rasch; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; driver behavior; behavioral models; perceived safety; Overtaking; advanced driving assistance systems; traffic safety; vulnerable road users;

   Sammanfattning : In a world aiming to shift to more sustainable modes of transportation, vulnerable road users (VRUs) like cyclists and pedestrians are still confronted with significant barriers to safety, particularly on rural roads where overtaking maneuvers represent a frequent and dangerous interaction with motorized traffic. If drivers misjudge their kinematics, even near-crashes without physical contact can harm the perceived safety of the VRU, which may decrease the willingness to continue cycling or walking on these roads. LÄS MER

5. 14. Surrogate Measures of Safety with a Focus on Vulnerable Road Users : An exploration of theory, practice, exposure, and validity

   Författare :Carl Johnsson; Trafik och väg; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Trafiksäkerhet; Indirekta trafiksäkerhetsindikatorer; Oskyddade trafikanter; Videoanalys; Surrogate measures of safety; Traffic safety; Vulnerable road user safety; Traffic conflicts; video analysis;

   Sammanfattning : Surrogate measures of safety (SMoS) are meant to function as tools to investigate traffic safety. The term surrogate indicates that these measures do not rely on crash data; instead, they focus on identifying safety critical events (or near-crashes) in traffic, which can be used as an alternative to crash records. LÄS MER

7. 15. Moral responsibility and the ethics of traffic safety

   Författare :Jessica Nihlén Fahlquist; John Cantwell; Tuija Takala; KTH; []
   Nyckelord :HUMANIORA; HUMANITIES; moral responsibility; ethics; traffic safety; public health; environment; Philosophy subjects; Filosofiämnen;

   Sammanfattning : The general aim of this thesis is to present and analyse traffic safety from an ethical perspective and to explore some conceptual and normative aspects of moral responsibility. Paper I presents eight ethical problem areas that should be further analysed in relation to traffic safety. LÄS MER