(Code 20) added to Class 4 or 5
![Heavy trailer](https://www.icbc.com/driver-licensing/types-licences/PublishingImages/1381377138387.gif)
What you can use it for
- To tow trailers or towed vehicles exceeding 4,600 kg gross vehicle weight (GVW). Neither the vehicle nor trailer may have air brakes.
Note: With this endorsement, you’ll need to obtain a commercial class medical assessment