A constable may enter premises to require a driver involved in a road traffic collision to provide a preliminary test or to arrest a person who has provided a positive test. Which conditions must be present?

• A. The collision involved property damage only.
• B. There has been an RTC involving injury and the officer reasonably suspects the injury occurred.
• C. Consent from occupant.
• D. Within the officer's jurisdiction.

Answer: (B)

The key idea is that a constable’s power to require a driver involved in a road traffic collision to provide a preliminary test—and to arrest someone who tests positive—only kicks in when there has been an injury and the officer has a reasonable belief that the injury occurred as a result of the collision. This combination gives a lawful basis to demand the test or make an arrest for a positive result. If the incident involved only property damage, there’s no injury to justify the test. Consent isn’t needed in these circumstances, and while acting within the officer’s jurisdiction is necessary, the essential conditions are the injury and the reasonable belief that it occurred.