I may be retired but not too old to drive a 4x4 and tow a caravan. However as it has not had any personal affect on me to date I am now wandering what were the changes to the driving licences issued to new drivers in the late 1990s regarding towing of caravans? The reason I ask is that my son, who is 27 years old, passed his driving test in 1998 and is insured on my 4x4 and has asked to borrow the van for a holiday. Clarification of this matter would therefore be very much appreciated.