In auto transport, the terms "open carrier" and "enclosed carrier" refer to the types of trailers used to transport vehicles. The main difference lies in the level of protection and security they offer during transportation.

1. Open Carrier: An open carrier, also known as an open trailer or flatbed trailer, is a type of trailer that does not have walls or a roof, leaving the vehicles exposed to the elements. It is the most common and cost-effective method of auto transport. Multiple vehicles are typically loaded onto the trailer and secured with straps or chains. While open carriers are widely used and considered safe, they do not provide protection against weather conditions, road debris, or potential damage from external elements.

2. Enclosed Carrier: An enclosed carrier, also known as an enclosed trailer or covered trailer, is a type of trailer that has walls and a roof, fully enclosing the vehicles being transported. This provides greater protection and security for the vehicles during transit. Enclosed carriers are often used for transporting high-value, classic, exotic, or luxury cars. They shield the vehicles from weather conditions, dust, road debris, and potential damage caused by external factors. Enclosed carriers offer a higher level of protection and are generally more expensive compared to open carriers.

Choosing between an open carrier and an enclosed carrier depends on various factors, including the value and condition of the vehicle, personal preferences, and budget. If you have a standard vehicle and are looking for a cost-effective transportation option, an open carrier might be a suitable choice. However, if you have a valuable or delicate vehicle that requires additional protection, an enclosed carrier is recommended to safeguard it during transit.