How long after a B2 downgrade can one apply for a B2 upgrade?

[MacBarrett]

You can apply for an upgrade if you have no demerit points within one year. Below are the relevant details: Article 14: If you already hold a motor vehicle driver's license and apply to add an additional permitted vehicle type, you must not have accumulated 12 demerit points in the current scoring cycle or the most recent scoring cycle before the application. Situations where an upgrade is not allowed: being held equally or more responsible for a traffic accident resulting in death; driving under the influence of alcohol leading to license revocation or having a motor vehicle driver's license revoked for less than 10 years. Vehicles permitted with a B2 license: A B2 license allows driving heavy-duty, medium-duty cargo vehicles or large, heavy, and medium-duty specialized operation vehicles. Heavy-duty and medium-duty cargo vehicles are mostly trucks, such as the large dump trucks commonly seen on roads carrying construction debris, which fall under the category of heavy-duty trucks.