Has it got the capacity to take the weight of the plant, can the plant be secured, will it do less damage, will it save time, is it safer than having a banksman walk with the travelling machine, can the machine move on the road safely

John, As well as a CSR card, if it is going on the public road, has the driver the correct rating on their licence. What is their age? You can drive a tractor from 16 years old. If it is going on the public road the machine will have to meet construction and use regs, insurance and all the other bits and bob that car owners have to adhere to. Colour of fuel is another factor as well as their insurance coverage. they may just have farm insurance for the machine, it may not cover them being used for hire or reward. Even if it is their own machine that is on the back of the trailer it is not being used for agricultural purposes, so will probably not be covered under their insurance. Depending on the trailer it will require a valid MOT as per any articulated trailer. LOLER certs for the chains used to secure the machine onto the trailer as normal. The last time I had this on a road site I found it was best left to those nice people from HMRC and PSNI RPU to sort it out.