How far may a labelled load protrude beyond the rear of your vehicle if your journey is more than 100 km?

You answered correctly. If a labelled load sticks out behind your vehicle and your journey is longer than 100 kilometers, it may protrude up to 1.5 meters. This rule ensures road safety by limiting how far objects can extend beyond the rear of a vehicle, preventing hazards for other road users. Remember: for trips over 100 km, the maximum allowed overhang is 1.5 meters; for shorter trips, under certain conditions, it could be up to 3 meters if marked correctly and specific rules are met. Always check current regulations, mark the load clearly, and never exceed the limits to avoid fines or danger.