title: Questions of probability in daytime-running-light argument.
abstract: The paper presents a revision of the formulae of Koornstra for converting 'raw' daytime-running-light effects into 'intrinsic' effects, based on a reworking of the underlying probability calculus.
authors.affiliation: Department of Statistical Science, University College London, UK.
authors.forename: M
authors.initials: M
authors.lastname: Stone
mesh_terms: D000063:Accidents, Traffic / Q000517:prevention & control* / Q000706:statistics & numerical data; D001336:Automobiles / Q000592:standards*; D002940:Circadian Rhythm; D003627:Data Interpretation, Statistical; D006801:Humans; D008029:Lighting / Q000592:standards*; D011336:Probability