What is the test for admitting evidence in a motor vehicle case?

It is trite law that evidence is admissible if it is relevant to a fact in issue in the case and is not subject to an exclusionary rule. The trial judge also has discretion to refuse to admit evidence where its prejudicial effect would exceed its probative value: Draper v. Jacklyn (1969), 1969 CanLII 6 (SCC), [1970] S.C.R. 92. That case involved graphic photographs of a motorist’s injuries that were admitted at trial. While holding that the photographs were properly admitted, Spence J. said at p. 98: The occasions are frequent upon which a judge trying a case with the assistance of a jury is called upon to determine whether or not a piece of evidence technically admissible may be so prejudicial to the opposite side that any probative value is overcome by the possible prejudice and that therefore he should exclude the production of the particular piece of evidence.