If placed next to a powered rail, when the cart goes over it, it will power the power rail long enough to push the cart. OR, if you place redstone dust next next to it, when the cart goes over the dectector rail and past the dust next to it, the redstone dust will be activated briefly, is if a torch had been placed.
From the PC wiki:BehaviorAn activator rail will affect minecarts above it with varying effects. The effects occur as soon as any part of the minecart is on the activator rail.An active activator rail will:
eject mobs (including players) from minecarts as if a player had used the sneak control to exit the minecart
repeatedly activate command block minecarts — a command block minecart will execute its command every game tick until the command block minecart is no longer on the activator rail
disable hopper minecarts — a disabled hopper minecart will not pick up items it travels through until it is enabled by an inactive activator rail (or until it is broken and re-placed)
prime TNT minecarts — primed TNT minecarts will explode after one second with an explosive power proportional to their speed over the activator rail.
An inactive activator rail will:
enable hopper minecarts — an enabled hopper minecart will pick up items it travels through until it is disabled by an active activator rail.
Currently, these rails do not eject mobs from the carts. I have extensively tested this because i was looking forward to this addition. I have not tested any of the other capabilities but I imagine they don't work either consideringg the sheer number of things that currently don't work properly in the xbox360 edition.
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Retired StaffSee the wiki: http://minecraft.gamepedia.com/Detector_Rail
- eject mobs (including players) from minecarts as if a player had used the sneak control to exit the minecart
- repeatedly activate command block minecarts — a command block minecart will execute its command every game tick until the command block minecart is no longer on the activator rail
- disable hopper minecarts — a disabled hopper minecart will not pick up items it travels through until it is enabled by an inactive activator rail (or until it is broken and re-placed)
- prime TNT minecarts — primed TNT minecarts will explode after one second with an explosive power proportional to their speed over the activator rail.
An inactive activator rail will:Currently, these rails do not eject mobs from the carts. I have extensively tested this because i was looking forward to this addition. I have not tested any of the other capabilities but I imagine they don't work either consideringg the sheer number of things that currently don't work properly in the xbox360 edition.
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Retired StaffCompletely my bad then.