We are still trying to establish whether there are reasonable grounds to believe that the individual committed such an offence. We want such individuals to have to take a breathalyzer. If they fail, we can use a breath test. We are looking for reasonable grounds to proceed to the second step.
Section 256 concerns situations where reasonable grounds already exist. It applies now. In some situations, the lack of reasonable suspicion constitutes a lack of reasonable grounds. That is why we have roadside screening tests.