If you are stopped for impaired driving, there are usually immediate consequences.  Even if you pass the breathalyzer, if your reading is above .05, you may still face a lisence suspension of 24 hours.

If you have reading of over .08, or are charged with refusal, your driver’s licence will be suspended for a minimum of three months pursuant to the Motor Vehicle Act in Nova Scotia. This suspension is automatic and occurs even though you have not been convicted of an offence.  Your licence will not automatically be reinstated after the passage of the three months.  You will be required to take and pass a course administered by the Registrar of Motor Vehicles.

If convicted, the Criminal Code requires the revocation of a driver’s licence or driving privileges.   A person whose driver’s license is revoked cannot apply to have the licence restored until a minimum of one year has expired (for a first offence); two years have expired (for a second offence); or five years (for a subsequent offence).