Whenever using a Minecart, it will kick the player out of the Minecart when it is over a redstone rail.
Linked issues
Attachments
Comments 2
Duplicate of MC-79835
MC-150059
Minecart Boots Player When Riding Over Redstone Rail
Resolved
Invalid
0
Works as intended, it's supposed to eject all mobs including players.
EDIT: Are you looking for Powered Rails instead?