A Dolly is
an unpowered vehicle used to connect with a prime mover for long
tractor-trailer combinations. The Dolly at Revere is a research platform which is quite unique due to the fact that it has steerable axles.
Also, since it is linked with projects on long vehicle combinations, work is being done to incorporate a sensor platform, so as to move it more towards intelligent transport.
The Dolly will be equipped with cameras, lidars, computers & an external power supply to achieve a stable platform for data collection with a view to efficient transport.