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Dive into the research topics where Karl Fridolf is active.

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Featured researches published by Karl Fridolf.


Fire Safety Science | 2011

People’s Subjective Estimation of Fire Growth: An Experimental Study of Young Adults

Karl Fridolf; Daniel Nilsson

An experiment was carried out to examine the subjective estimation of fire growth for young adults and their perceived ability to extinguish fires. In the experiment, participants filled out a questionnaire consisting of two parts. The first part involved prediction of fire growth, and the participants were asked to estimate the times between different stages of fires. The second part involved estimation of the ability to extinguish different fires, and the participants were asked about their ability to extinguish the fires with a portable foam extinguisher. The results suggest that young adults are not very good at predicting fire growth, or the seriousness of a fire. There is a great variation in the estimations of the time lapsed between different stages of a fire, which means that the heat release rate of the fire often is greatly over- or underestimated. In predicting fire growth, no differences could be found between males and females or people with previous experience of fires. In addition, a great proportion of the test participants believed that a fire was too large to extinguish with a portable foam extinguisher when it in fact was not.


Fire Technology | 2013

Fire Evacuation in Underground Transportation Systems: A Review of Accidents and Empirical Research

Karl Fridolf; Daniel Nilsson; Håkan Frantzich


Fire Safety Journal | 2013

Movement speed and exit choice in smoke-filled rail tunnels

Karl Fridolf; Enrico Ronchi; Daniel Nilsson; Håkan Frantzich


Fire and Materials | 2014

The impact of smoke on walking speed

Karl Fridolf; Kristin Andrée; Daniel Nilsson; Håkan Frantzich


Safety Science | 2014

The flow rate of people during train evacuation in rail tunnels: Effects of different train exit configurations

Karl Fridolf; Daniel Nilsson; Håkan Frantzich


Studies in sustainable technology. Research report | 2012

The Metro Project: Final Report

Haukur Ingason; Mia Kumm; Daniel Nilsson; Anders Lönnermark; Alexander Claesson; Ying Zhen Li; Karl Fridolf; Rolf Åkerstedt; Hans Nyman; Torkel Dittmer; Rickard Forsén; Bo Janzon; Gero Meyer; Anders Bryntse; Tobias Carlberg; Lindy Newlove-Eriksson; Anders Palm


Transportation research procedia | 2014

Ascending stair evacuation: what do we know?

Johan Norén; Mattias Delin; Karl Fridolf


TVBB-3192; 3192 (2015) | 2015

Ascending evacuation in long stairways: Physical exertion, walking speed and behaviour

Enrico Ronchi; Johan Norén; Mattias Delin; Kalev Kuklane; Amitava Halder; Silvia Arias; Karl Fridolf


Human Behaviour in Fires international Symposium, 2012 | 2012

Train evacuation inside a tunnel: An interview study with senior citizens and people with disabilities

Karl Fridolf; Daniel Nilsson; Håkan Frantzich


6th International Symposium on Human Behaviour in Fire, Cambridge, 2015 | 2015

The relationship between obstructed and unobstructed walking speed: Results from an evacuation experiment in a smoke filled tunnel

Karl Fridolf; Enrico Ronchi; Daniel Nilsson; Håkan Frantzich

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Henric Modig

Swedish Transport Administration

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Anders Lönnermark

SP Technical Research Institute of Sweden

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Gero Meyer

Mälardalen University College

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