Yes, the bikes on the tour de France have brakes on each wheel.
Drop bar road bikes
No. They use regular road bikes and TT(time trial) bikes.
They're the same size as regular drop bar road bikes.
Drop bar road racing bikes.
These days, as much carbon fiber as possible.
Multi-geared, drop bar road bikes and TT (time trial) bikes.
Drop bar fixed gear steel road bikes.
Camagnolo don't make bikes, they make bike parts, like gears and brakes. Many Tour de France winners have won on Campagnolo-equipped bikes. There have been thirty winners on Campagnolo-equipped bikes. The most recent was in 2006, Oscar Pereiro won.
"Tour de" basically means "tour of". So tour de France = tour of France.
Omega Pharma Quick Step Astana Saxo Bank