What percentage of the total length is generally recommended for the distance between trailers?

The recommended distance between trailers in a double or triple trailer configuration is typically around 10-15 feet. This distance helps ensure maneuverability and stability while driving, especially when making turns or navigating through tight spaces. Maintaining enough space between the trailers is crucial for safe operation, as it allows for the necessary clearance and reduces the risk of interference between the trailers' movements.

The other options either recommend distances that are too short, which can lead to instability or safety concerns while driving, or suggest no specific distance at all, which can compromise safety standards. In practice, adhering to established guidelines like the 10-15 feet recommendation helps protect not only the driver but also other road users by providing a safer transportation environment.