1. AIBN (Accident Investigation Board Norway 2013).https://www.aibn.no/Road-Traffic/Reports/2013-05
2. AIBN (Accident Investigation Board Norway 2015).https://www.aibn.no/Road-Traffic/Published-reports/2015-02-eng
3. AIBN (Accident Investigation Board Norway 2016).https://www.aibn.no/Road-Traffic/Published-reports/2016-03-eng
4. State-of-the-art road tunnel safety
5. Boer L. C.(2002).Gedrag van automobilisten bij evacuatie van een tunnel[Behaviour by motorists on evacuation of a tunnel]. Report TM‐02‐C034.Amsterdam:TNO.