In simplest terms, ODC or Over Dimensional Cargo is a cargo that protrudes outside the loading deck of the vehicle transporting the cargo, cargo that extends beyond the normal deck of the cargo (may it be 20' or 40' or more). The over-dimensional cargo gets transported in flat racks and open tops.
Over dimensional cargo means cargo carried as single divisible unit and which exceeds the dimensional limits prescribed in Rule 93 of Central Motor Vehicle Rules, 1989 made under the Motor Vehicles Act, 1988. The railways shall not deliver the goods unless e-way bill is produced at the time of delivery.