Final answer:
The legal length of a towline in New Jersey is not given in the provided information, and it would be best to consult the New Jersey Motor Vehicle Commission or state traffic laws for accurate and current regulations.
Step-by-step explanation:
The legal length of a towline in New Jersey is not directly provided in the provided reference information, but the reference to 9 cm stretch for nylon climbing rope and considerations for safe distances when crossing in front of a car seem to be unrelated to the specific regulations of towline lengths.
In New Jersey, towline length regulations would fall under vehicle and traffic laws, which can differ from general material properties or pedestrian safety guidelines. To determine the legal length of a towline, one should consult the New Jersey Motor Vehicle Commission or the state's current traffic laws.
It is important when towing a vehicle to ensure that the towline is compliant with legal requirements, provides enough distance between vehicles for safety, and does not exceed length limits that could pose hazards to other road users. These standards are typically in place to balance the towed vehicle's maneuverability and reaction time with the safety of others on the road.