To maintain vehicular safety, drawbars between vehicles can now be a maximum of how many feet?

The correct answer is 15 feet. This regulation ensures safety in roadway conditions by limiting the distance between connected vehicles, which can help prevent accidents and improve maneuverability. A shorter drawbar distance reduces the risk of swaying and instability when towing, enhancing the overall control and safety of the vehicles involved. Maintaining this maximum distance helps to ensure that emergency braking and other driving responses are more effective, which is crucial for all road users.

The other options provided represent distances that exceed this safety standard, which could potentially lead to increased risks during driving, especially in emergency situations or when navigating turns and curves in the road.