During what scenario would you need to use a tow-bar for towing?

Using a tow-bar for towing is necessary when you are dealing with a vehicle that has faulty brakes. This situation requires the implementation of a tow-bar because it provides a stable and secure connection between the towing vehicle and the one being towed. Faulty brakes on the towed vehicle mean that it cannot stop effectively on its own, which can pose significant safety risks. A tow-bar minimizes any swaying or drifting that can occur while towing, helping to maintain control over the towed vehicle and ensuring a safer towing experience.

In contrast, towing a friend's vehicle or any vehicle with good brakes may not necessitate a tow-bar, as those vehicles are capable of stopping on their own and may be more manageable to tow without additional equipment. Using a bicycle for transport does not involve towing at all, as it is a different mode of transportation entirely. Thus, employing a tow-bar becomes essential specifically in scenarios where the towed vehicle's braking system is compromised.