1. Head movements of drivers. 1. Equipment and exploratory study;Åberg,1977
2. Olyckor i plankorsningar mellan väg och järnväg;Ekblom;Transportforskningsdelegationen,1981
3. Psychological Statistics;McNemar,1955
4. Analysis of drivers reactions to warning devices at a high-accident rural grade crossing;Russell,1974
5. Human factors countermeasures to improve highway-railway intersection safety;Sanders,1973