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Katrine Karlsen

Master of Social Psychology

Position	Research Officer
E-mail	kka@toi.no
Direct phone	47 61 80 31
Division	Department of Security, Safety and Behaviour

Publication type

TØI-reports

Report.no	Title	Authors	Language	Download
2114/2025	2114/2025 The World's Longest Bike Tunnel and a New Light Rail Route: Effects on Travel Behaviour and Perceptions	Aslak Fyhri, Katrine Karlsen, Kjell Vegard Weyde, Andreas Kokkvoll Tveit, Jon Martin Denstadli	Norwegian	Summary, pdf Full report, in Norwegian only, pdf Sammendrag, pdf
2105/2025	2105/2025 Registration of accidents involving bicycles, e-scooters and pedestrians : Documentation report from the projects ReCYCLIST and CyWalk	Ingeborg Storesund Hesjevoll, Rikke Ingebrigtsen, Torkel Bjørnskau, Katrine Karlsen	Norwegian	Summary, pdf Full report, in Norwegian only, pdf Sammendrag, pdf
1944/2023	1944/2023 E-scooters and accessibility in urban environments - The experiences of people with impaired vision or impaired mobility	Katrine Karlsen, Kjell Vegard Weyde, Anja Fleten Nielsen, Eva-Gurine Skartland	Norwegian	Summary Full report - in Norwegian only Sammendrag
1928/2022	1928/2022 Can youth be influenced into safer e-scooter behaviour through SoMe? - An investigation of the potential of using SoME and influencer collaboration for traffic safety communication	Vibeke Milch Uhlving, Ingunn Opheim Ellis, Aslak Fyhri, Katrine Karlsen	Norwegian	Summary Full report - in Norwegian only Sammendrag
1899/2022	1899/2022 Youth and electric scooters - A survey on mobility patterns and accident conditions in nine Norwegian municipalities	Vibeke Milch Uhlving, Ingunn Opheim Ellis, Katrine Karlsen, Aslak Fyhri	Norwegian	Summary Full report - in Norwegian only Sammendrag
1898/2022	1898/2022 Public health consequences of electric scooters for young people and adults - Effects on active mobility and accidents	Aslak Fyhri, Katrine Karlsen, Torkel Bjørnskau	Norwegian	Summary Full report - in Norwegian only Sammendrag
1889/2022	1889/2022 E-scooters in Norway: Main results from two web-surveys autumn 2021	Nils Fearnley, Katrine Karlsen, Torkel Bjørnskau	Norwegian	Summary Full report - in Norwegian only Sammendrag
1872/2022	1872/2022 Parking spaces for e-scooters in Drammen	Katrine Karlsen, Espen Johnsson	Norwegian	Summary Hele rapporten Sammendrag
1837/2021	1837/2021 Protected bike lanes and pop-up cycling infrastructure	Aslak Fyhri, Petr Pokorny, Katrine Karlsen	Norwegian	Summary Hele rapporten Sammendrag
1828/2021	1828/2021 The joy and trouble with e-scooters	Katrine Karlsen, Aslak Fyhri	Norwegian	Summary, rev. 1 Full report, rev. 1 - in Norwegian only Sammendrag, rev. 1
1821/2021	1821/2021 Parking solutions for shared e-scooters	Katrine Karlsen, Espen Johnsson, Aslak Fyhri, Petr Pokorny	Norwegian	Summary Full report - in Norwegian only Sammendrag
1790/2020	1790/2020 Cycle pilot study: Effect of bike boxes and two-phase left-turn signs	Aslak Fyhri, Fridulv Sagberg, Torkel Bjørnskau, Katrine Karlsen	Norwegian	Summary - in Norwegian only Full report - in Norwegian only
1789/2020	1789/2020 Cycle pilot studies: Evaluation of“sharrows”	Aslak Fyhri, Fridulv Sagberg, Torkel Bjørnskau, Ole Aasvik, Katrine Karlsen	Norwegian	Summary - in Norwegian only Full report - in Norwegian only
1787/2020	1787/2020 Traffic safety in bus transport: An analysis of Ruter’s requirements to bus companies in contracts	Tor-Olav Nævestad, Rune Elvik, Vibeke Milch Uhlving, Katrine Karlsen, Ross Owen Phillips	Norwegian	Summary Full report - in Norwegian only Sammendrag
1771/2020	1771/2020 Road user interactions. A survey from nine urban areas in Norway	Katrine Karlsen, Torkel Bjørnskau	Norwegian	Summar Full report - in Norwegian only Sammendrag
1743/2019	1743/2019 Unmarked pedestrian crosswalks - Safety and accessibility	Alena Katharina Høye, Siri Hegna Berge, Kjersti Visnes Øksenholt, Katrine Karlsen	Norwegian	Summary Full report - in Norwegian only Sammendrag

Academic articles

Title	Authors	Publication
What characterizes bicycle and e-scooter accidents not included in official accident statistics? Lessons learned from the ReCyCLIST project in Agder, Norway	Torkel Bjørnskau, Ingeborg Storesund Hesjevoll, Rikke Ingebrigtsen, Katrine Karlsen, Petr Pokorny, Hanne Beate Sundfør, Kjell Vegard Weyde, Odd Mjåland	Traffic Safety Research an Interdisciplinary Journal, 2025, 9(Annual Volume):1-14
Clutter from parked e-scooters: Effects of dedicated spaces	Katrine Karlsen, Petr Pokorny, Espen Johnsson, Aslak Fyhri	Journal of Cycling and Micromobility Research, 2025, 6(December 2025):1-12
Evaluation of an Influencer Campaign on Social Media Targeting Young E-scooter Users	Aslak Fyhri, Vibeke Milch Uhlving, Ingunn Opheim Ellis, Katrine Karlsen	Findings, 2023, (March):1-6
E-scooter riders and pedestrians: Attitudes and interactions in five countries	Matús Šucha, Elisabeta Drimlová, Karel Rečka, Narelle Haworth, Katrine Karlsen, Aslak Fyhri, Pontus Wallgren, Peter Silverans, Freya Slootmans	Heliyon, 2023, 9(4, April 2023):1-18
Does active transport lead to improved mood and performance? A panel study of travel changes during the Covid-19 lockdown in Norway	Aslak Fyhri, Alice Ciccone, Claire Papaix, Katrine Karlsen	Transportation Research Part F: Traffic psychology and behaviour, 2023, 94(April 2023):114-132
Traffic safety in bus transport: An analysis of Norway’s largest transit authority’s contract requirements to bus companies	Tor-Olav Nævestad, Rune Elvik, Vibeke Milch Uhlving, Katrine Karlsen, Ross Owen Phillips	Transportation Research Part F: Traffic psychology and behaviour, 2022, 89(August 2022):317-333
Paint It Red - A Multimethod Study of the Nudging Effect of Coloured Cycle Lanes	Aslak Fyhri, Katrine Karlsen, Hanne Beate Sundfør	Frontiers in Psychology, 2021, 12(662679):12
Is Red the New Black? A Quasi-Experimental Study Comparing Perceptions of Differently Coloured Cycle Lanes	Katrine Karlsen, Aslak Fyhri	Frontiers in Psychology, 2020, (Desember):12

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E-post: toi@toi.no

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