Final answer:
Maintain a safe following distance behind the motorcycles and overtake when it's safe, following traffic laws and prioritizing safety.
Step-by-step explanation:
If you are travelling on a road behind two motorcycles that are moving slowly, you should maintain a safe following distance and be ready to adjust your speed or position if necessary. Depending on the situation, you might overtake the motorcycles if it is safe to do so, following the rules of the road and ensuring you have clear visibility and space to pass. The action to take could vary based on specific road conditions, traffic laws, and the behavior of the motorcycles, but the priority should always be safety for all road users.