What document is necessary for operating a borrowed vehicle when the owner is unavailable?

To operate a borrowed vehicle when the owner is unavailable, obtaining the owner's written consent is necessary. This document serves as formal permission from the owner, ensuring that the individual borrowing the vehicle has legal authorization to use it. Written consent not only protects the borrower from potential legal issues but also provides evidence that the vehicle’s owner agrees to the arrangement.

Having a written agreement minimizes misunderstandings and conflicts regarding the vehicle's use and can be crucial in situations involving insurance and liability claims. In contrast, other forms of consent, like verbal agreements, may lack the necessary documentation to prove that permission was given, which could lead to complications if any disputes arise. The involvement of a public notary is not a standard requirement for everyday vehicle borrowing, making it irrelevant in this context.