Final answer:
A large commercial truck or a bus might have to take a different course than usual at roundabouts due to their larger turning radius and size. They may need to swing wider and take the outer lane to ensure safety.
Step-by-step explanation:
A vehicle that might have to take a different course than usual at roundabouts is a large commercial truck or a bus. These vehicles have a larger turning radius and may need to swing wider when navigating roundabouts to avoid hitting curbs or other vehicles. They may also need to take a different course to accommodate the size and weight of their vehicles.
For example, a bus or truck may need to take the outer lane of a roundabout instead of the inner lane to ensure they have enough space to make the turn safely. They may also need to slow down more than smaller vehicles to maintain control and stability.
It is important for drivers of larger vehicles to be cautious and aware of their surroundings when approaching and navigating roundabouts to ensure the safety of themselves and other road users.