title: Difficult safety problems.
authors.affiliation: a Transportation Research and Injury prevention Programme/Department of Civil Engineering, Indian Institute of Technology Delhi , India.
authors.forename: Geetam
authors.initials: G
authors.lastname: Tiwari
mesh_terms: D000063:Accidents, Traffic / Q000401:mortality* / Q000517:prevention & control*; D006801:Humans; D012449:Safety