Observational Before-After Studies in Road Safety
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1,483 citations
Cites background from "Observational Before-After Studies ..."
...For example, some researchers have used traffic flow as a measure of exposure and found the relationship between crashes and traffic flow to be decreasing (Tanner, 1953; Mahalel, 1986; Hauer et al., 1988; Hauer, 1997; Persaud and Nguyen; 1998) implying a potentially contentious finding that the crash risk per unit of exposure becomes smaller as traffic flow increases (Maher et al....
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...…a measure of exposure and found the relationship between crashes and traffic flow to be decreasing (Tanner, 1953; Mahalel, 1986; Hauer et al., 1988; Hauer, 1997; Persaud and Nguyen; 1998) implying a potentially contentious finding that the crash risk per unit of exposure becomes smaller as traffic…...
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576 citations
453 citations
Cites background from "Observational Before-After Studies ..."
...It has therefore been decided to focus on the following four potentially confounding variables that are known (Hauer 1997) to be important in road safety evaluation studies:...
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...Simulation studies made by Hauer (2003) have confirmed this....
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450 citations
Cites methods from "Observational Before-After Studies ..."
...(3), the method is now well developed (1) and has been widely applied....
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384 citations
Cites background from "Observational Before-After Studies ..."
...Given the importance of roadways safety, there has been considerable crash prediction research (see, e.g., Hauer, 1986, 1997, and 2001; Abdel-Aty, and Radwan, 2000; Ulfarsson and Shankar, 2003; Kweon and Kockelman, 2000; Lord and Persaud, 2000; Lord et al., 2005; Ma and Kockelman, 2006; Karlaftis…...
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