Final answer:
The minimum requirement for a vehicle stop is reasonable suspicion.
Step-by-step explanation:
The minimum requirement for a vehicle stop, with regard to a particular vehicle or driver, is reasonable suspicion.
Reasonable suspicion is the legal standard that allows the police to make a brief stop and conduct a limited investigation if they have specific and articulable facts that lead them to suspect criminal activity. It is a lower standard than probable cause, which is required for a full search or arrest.
For example, if a police officer observes a driver swerving between lanes and running a red light, they may have reasonable suspicion to pull over the driver and investigate further.