PARIS
Only 2 colors green/red for speed, Yellow is for construction.
Estimated times are given between important points, on the map, after reaching a certain zoom factor.

Special destination views (airport)
s
Map and Table
Comparaison of using car versus. using public transportation
(here: car wins with 35 min over 41 min for the train but it was the
middle of the night!)
One can also get detailed long distance itinerary coupled with neighborhood maps
Traffic en France: http://www.equipement.gouv.fr/routes/route/p1/6point1.htm
Also good source of info in French: ministere de l'equipement http://www.equipement.gouv.fr/
BELGIUM
http://www.gendarmerie.be/gd/trafic/module.htm
Note the zoom-able applet, nice but pretty slow to load.