Ross , over a certain size in the UK , a load has to be escorted by police or contractors .
The load’s route is worked out by the local authority responsible for the road being used .
Once the route is agreed , it is up to a combination of the Company and Authority to ensure that the route is navigable and where it crosses other traffic (canal , train , river) that the road is suitable for transit , this involves working with the railways in particular to set up communication with local rail traffic control . A time slot is worked out for the arrival of the load at the train crossing , and when it arrives the roadbed is adjusted according to requirements using sheet steel , timbers , sand and whatever necessary . If the load does not arrive in time for the time slot , it is not allowed to proceed . Clearance for rail traffic is only given after the load has crossed . A spare towing vehicle is always available to cover . At rail crossings , there are in any case telephones available for members of the public etc… for use in emergencies , directly connected to the nearest signal box .
This method has to be followed for every bridge that the load has to cross , this time with weight being taken into consideration and the bridge temporarily strengthened , or special hover trailers are used .
The driver in all this just does as he is told .
Quite a good system , no lives lost , no trains derailed , no jumping to conclusions .
Similar systems are used in most of Europe .
Mike
ps ----a close look at the type of trailer and the road geometry in the derailment shown would leave the
average driver totally lost . I doubt anyone here except the professional truck drivers will be able
to see why .