Section 37-1-6301-01001-212 - 57 Foot Box Van Trailer Permit1. An owner/operator of a 57-foot box van trailer may apply to MDOT for a blanket permit to travel on an approved route seven (7) days per week and twenty-four (24) hours per day.2. MDOT may exclude or designate certain portions of highways to be used with the blanket permit or at any time during the life of the blanket permit with advanced notification to the permit holder.37 Miss. Code. R. 1-6301-01001-212