The least possible time in which an individual may receive a Full G licence in Ontario is as follows:
Hold a G1 permit for 12 months: To move from a G1 permit to a G2 license, an individual must hold the G1 permit for at least 12 consecutive months.
Pass G1 written test and vision screening: During this period, the individual must pass the G1 written test and complete a vision screening.
Complete at least 20 hours of in-car lessons with a certified instructor: The individual must also complete at least 20 hours of in-car lessons with a certified instructor and accumulate 40 hours of driving practice (including night-time driving).
Pass the G2 road test: After holding the G2 license for a minimum of 12 months and completing the required driving experience, the individual must pass the G2 road test to advance to the Full G licence.
Hold a G2 license for at least 12 months: By fulfilling these conditions, the individual may be eligible to receive the Full G licence after holding the G2 license for at least 12 consecutive months.
Therefore, the least possible time to obtain a Full G licence in Ontario is around 24 months, considering the mandatory waiting periods and the time needed for lessons and road testing.