Washington Law Review
The problem of the highway speeder is almost as old as the automobile itself. With this problem came two others—one, the detection of the speeding motorist, and two, the use of the means of detection as evidence in convicting the offender. Through the years many devices have been invented to determine the speed of an automobile. Some of these have succeeded m the courtroom and are still used; others have been determined inadmissible in evidence. Some of the means most commonly used at the present time met with difficulty at first and in some instances are still not enough in themselves to gain a conviction.
Evidence of Speed—Highway Radar,
30 Wash. L. Rev. & St. B.J.
Available at: https://digitalcommons.law.uw.edu/wlr/vol30/iss1/4