Preliminary Roadside Testing can be conducted when the officer has reasonable grounds to believe which of the following?

Answer: B — Both A and B

Preliminary roadside testing can be initiated by an officer when there are reasonable grounds to believe that the driver has both committed a moving traffic violation and consumed alcohol. This is significant because reasonable suspicion is a foundational requirement for law enforcement to conduct further testing without the need for a warrant. When an officer has observed a moving violation, such as speeding or weaving within a lane, it can suggest that the driver is not operating the vehicle safely. If, in addition, the officer detects indications that the driver may have consumed alcohol, these combined factors strengthen the justification for conducting a roadside test. The presence of a traffic violation alone can prompt an officer to approach a driver to assess their condition, but if the officer suspects alcohol consumption, the need for preliminary testing becomes more critical to ensure the safety of all road users. This combination of observations allows the officer to establish reasonable grounds necessary to conduct the test. Thus, the correct recognition of both elements as necessary conditions for preliminary roadside testing is crucial for understanding law enforcement procedures regarding impaired driving.