The ALMA transporter - lateral view

The ALMA antenna transporter is supported by 28 wheels, all independently driven. The ALMA transporter is able to turn around a 12-m antenna. This is required when the transporter has to remove or place an antenna in the middle of the most compact configuration, as in this case, the manoeuvring space can be as small as a few metres, which is not a lot for a 20 m long vehicle. A laser detection system is also installed on the truck to avoid collisions. In case of emergency, this system automatically stops the transporter. The sophisticated lorry has been optimised to reduce the cost of the road on which it circulates. Its relatively small weight of 130 tons is the result of a dedicated lightweight design. The transporter is also designed to resist to a major earthquake, as are all the ALMA antennas. Image taken in July 2007.