If you want realistic breaking of a train before a stop signal (see episode 15) you need two additional pieces:
Braking module
55063
and...
A power extender 55090
The two single insulated tracks (10513) can be easily transformed to two double insulated tracks (10512), with a saw, necessary for correct function of the braking module.
Straight single insulated track 10153
Straight double insulated track 10152
The trains have to be equipted with an Loco Magnet (17010), and trigger the Track contact (17100).
