Most times, when engines approach a level crossing, they have first priority and the road vehicles have to wait. However, there have been times when the road vehicles have first priority as well. While the gates are meant to stop traffic, there have been some occasions when engines and trucks cannot stop and wind up crashing through them. Some examples of these include Henry when he was running out of control along the line by Old Bailey's station, Toad when he was running loose with trucks, and Gordon when he had a banner stuck across his smokebox.