1. When a peace officer has reasonable grounds to believe that either of the following have occurred, the peace officer may request that the operator provide a sample of the operator’s breath for a preliminary screening test using a device approved by the commissioner of public safety for that purpose:
- a. A motor vehicle operator may be violating or has violated section 321J.2 or 321J.2A.
- b. The operator has been involved in a motor vehicle collision resulting in injury or death.
- 2. The results of this preliminary screening test may be used for the purpose of deciding whether an arrest should be made or whether to request a chemical test authorized in this chapter, but shall not be used in any court action except to prove that a chemical test was properly requested of a person pursuant to this chapter.
86 Acts, ch 1220, §5; 95 Acts, ch 48, §12