For a clear view around the whole vehicle
When parking and manoeuvring, it’s difficult to have an overview of your entire surroundings. Especially with large vehicles like lorries, buses and caravans, it gets problematic. They take up a lot of space and, on top of that, they have blind spots, which makes it difficult or impossible to see objects and people. Therefore, to prevent people getting injured or objects getting damaged, supplementing your limited view with cameras when parking and manoeuvring can only be a good thing.