CdwJava
Senior Member
The Frye standard provides that expert opinion based on a scientific technique is admissible only where the technique is generally accepted as reliable in the relevant scientific community.
In Daubert v. Merrell Dow Pharmaceuticals, 509 U.S. 579 (1993), the USSC determined that the Federal Rules of Evidence superseded Frye as the standard for federal courts. Some states utilize this federal standard, others still hold steady to the stricter Frye standard. CA still holds to the Frye standard.
Expert testimony and even lay opinion is often allowed in CA pursuant to Evidence Code 800-805. An officer with radar training would likely meet the Frye standard without difficulty. An officer without the training can be examined by the court to determine if he or she may testify as a subject matter expert, and a lot of this would depend on whether or not the defense objected or not. And, since the officer's opinion would not be based on scientific evidence Kelly/Frye might not apply. I have seen courts go in both directions on this, and these sorts of decisions are sometimes the basis for appeals.
The bottom line is that in CA an officer's visual estimation is generally accepted if trained in this technique (radar training and certification) and more vulnerable to defense challenge if no formal training or certification process has been put in place.
In Daubert v. Merrell Dow Pharmaceuticals, 509 U.S. 579 (1993), the USSC determined that the Federal Rules of Evidence superseded Frye as the standard for federal courts. Some states utilize this federal standard, others still hold steady to the stricter Frye standard. CA still holds to the Frye standard.
Expert testimony and even lay opinion is often allowed in CA pursuant to Evidence Code 800-805. An officer with radar training would likely meet the Frye standard without difficulty. An officer without the training can be examined by the court to determine if he or she may testify as a subject matter expert, and a lot of this would depend on whether or not the defense objected or not. And, since the officer's opinion would not be based on scientific evidence Kelly/Frye might not apply. I have seen courts go in both directions on this, and these sorts of decisions are sometimes the basis for appeals.
The bottom line is that in CA an officer's visual estimation is generally accepted if trained in this technique (radar training and certification) and more vulnerable to defense challenge if no formal training or certification process has been put in place.