What is the requirement for the front of every trailer less than 80 inches in width?

For a trailer that is less than 80 inches in width, there are no specific requirements mandated for the front of the trailer. This means that such trailers do not need to be equipped with any particular safety features such as lights, reflectors, or placards on the front — unlike wider trailers which may have stricter regulations for visibility and safety. This allowance is part of regulations designed to streamline requirements for smaller trailers which contribute to a lower risk environment in terms of visibility compared to larger vehicles.

In contrast, the other options imply the need for additional safety measures that are typically associated with larger trailers or vehicles meant to ensure better visibility and safety on the road, which are not applicable to trailers of this width.