The U-1 was a liquid hydrogen trailer

Liquid hydrogen trailer

A liquid hydrogen trailer is a trailer designed to carry cryogenic liquid hydrogen on roads being pulled by a powered vehicle. The largest such vehicles are similar to railroad tanktainers which are also designed to carry liquefied loads. Liquid hydrogen trailers tend to be large; they are...

 designed to carry cryogenic liquid hydrogen

Liquid hydrogen

Liquid hydrogen is the liquid state of the element hydrogen. Hydrogen is found naturally in the molecular H2 form.To exist as a liquid, H2 must be pressurized above and cooled below hydrogen's Critical point. However, for hydrogen to be in a full liquid state without boiling off, it needs to be...

 (LH₂) on roads being pulled

Towing

Towing is the process of pulling or drawing behind a chain, line, bar or some other form of couplings. Towing is most visibly performed by road vehicles, but anything from waterborne vessels to tractors to people can tow cargo. Troop carrying and cargo carrying gliders were towed behind powered...

 by a powered vehicle. It was constructed by the Cambridge Corporation and had a capacity of 26 500 liters with a hydrogen

Hydrogen

Hydrogen is the chemical element with atomic number 1. It is represented by the symbol H. With an average atomic weight of , hydrogen is the lightest and most abundant chemical element, constituting roughly 75% of the Universe's chemical elemental mass. Stars in the main sequence are mainly...

 loss rate of approximately 2 percent per day. The U-1 was a single axle

Axle

An axle is a central shaft for a rotating wheel or gear. On wheeled vehicles, the axle may be fixed to the wheels, rotating with them, or fixed to its surroundings, with the wheels rotating around the axle. In the former case, bearings or bushings are provided at the mounting points where the axle...

 semi-trailer

Semi-trailer

A semi-trailer is a trailer without a front axle. A large proportion of its weight is supported by a road tractor, a detachable front axle assembly known as a dolly, or the tail of another trailer...

, The specifications for its successor the U-2 a double axis semi-trailer were issued on 15 March 1957.

See also

• Hydrogen economy
  Hydrogen economy
  The hydrogen economy is a proposed system of delivering energy using hydrogen. The term hydrogen economy was coined by John Bockris during a talk he gave in 1970 at General Motors Technical Center....
  
  
• Hydrogen infrastructure
  Hydrogen infrastructure
  A hydrogen infrastructure is the infrastructure of pipes and stations for distribution and sale of hydrogen fuel.-Hydrogen pipeline transport:Hydrogen pipeline transport is a transportation of hydrogen through a pipe as part of the hydrogen infrastructure...
  
  
• Timeline of hydrogen technologies
  Timeline of hydrogen technologies
  Timeline of hydrogen technologies — A timeline of the history of hydrogen technology.-1600s:* 1625 - First description of hydrogen by Johann Baptista van Helmont...