Sorry, sent first part by mistake, so,
La Caravane du Tour is 20kms long, consisting of 180 decorated and animated vehicles (loudspeakers etc) ,
hosting the 600 people involved in the caravan. It takes about 45 minutes for the Caravan to pass by while distributing/throwing 15 millions presents/gadgets .
As far as security is concerned it means an average of
14 000 gendarmes along the edge of the road or on the
roads (to deal with security)
9 000 police people (to deal with offences)
Gendarme and Police change daily , they do not 'follow' the Tour but come from the various areas crossed by the route du Tour.
Now, to host the tour overnight, the town and its surroundings must have a fairly big accommodation potential, between the caravane, the riders and the teams managers, coach, physical trainers etc...
Added to that are all the journalists, cameramen, reporters etc...
Amazing no ?