What is the point of a double trailer?

The use of double or triple trailers (often called longer combination vehicles) can allow for more payload to be moved per gallon of fuel consumed.

Why do some trucks have double trailers?

Double trailer trucks are often used when traveling long distances or when larger amounts of cargo must be delivered from one place to another. Certain types of double trailer trucks require special permits to drive, as handling is typically more difficult than a standard tractor trailer.

What are double tractor trailers called?

tandem rigs
A road tractor coupled to a semi-trailer is often called a semi-trailer truck or “semi” in North America & Australia, and an articulated lorry or “artic” in the UK. Semi-trailers with two trailer units are called B-doubles (Australian English) or tandem tractor-trailers, tandem rigs, or doubles (American English).

How many points of articulation does a double trailer rig have?

So the front trailer is connected to the dolly at one articulation point and the rear trailer is connected to that dolly at another articulation point. That makes 3 total articulation points for a truck pulling doubles and 5 for a truck pulling triples.

Can double trailers be backed up?

As for trucks pulling two or more trailers, the short answer is: They don’t back up. No, seriously. Drivers who pull doubles and triples simply do not back up. And they’re very careful to never put themselves in a position where they may have to back up.

Why is it called a double truck?

The name “double truck” comes from the days when the heavy forms for newspaper pages (the metal version of each page), largely filled with lead type, were rolled around the composing room floor on heavy carts called trucks. Two pages for one project meant a double truck.

How long is a set of double trailers?

Double or pup trailers are typically 28 feet in length, while intermodal containers can be 20 or 40 feet. Tanker trailers, flatbeds and a wide variety of other trailer types are available, all in slightly different lengths.

What are double trucks?

Double truck refers to a pair of facing pages, usually in a newspaper or magazine, with content that stretches over both pages. In most newspapers and magazines, the booklet-like format is accomplished by folding large sheets of paper in half.

Why is AB double called AB double?

A B-Double gets its name from the fact that it has two trailers, both being B-types. A B-Triple is easy enough to figure out, because it’s an ordinary B-Double with a second ‘lead’ trailer slotted in. Next is the AB-Triple that consists of a semi-trailer combination pulling a B-Double, via a drawbar-coupled dolly.