People v. Beamer

This is an appeal from a judgment of conviction of a violation of section 510 of the Vehicle Code by driving an automobile upon a public street at 35 miles an hour in a prima facie 25-mile zone. The only evidence concerning appellant’s speed was obtained by use of a device known as an electromagnetic radar speed meter. This evidence was admitted over the defendant’s objection that it was inadmissible under sections 751 and 752 of the Vehicle Code.

The evidence shows that the speed meter was mounted on the trunk of a police car. The police car was parked at the street curb and was painted a…