Rail/BS

Java Edition:

Name	Default value	Allowed values	Description
shape	north_south	east_west north_east north_south north_west south_east south_west	The two directions a rail connects to. For example, a south_east rail is a curved rail that connects to the south and to the east.
		ascending_east ascending_north ascending_south ascending_west	A rail that ascends toward the direction noted. For example, an ascending_west rail is a straight rail that goes upward from the east toward the west.
waterlogged	false	true false	Whether or not there's water in the same place as this rail.

Bedrock Edition:

Name	Metadata Bits	Default value	Allowed values	Values for Metadata Bits	Description
rail_direction	0x1 0x2 0x4 0x8	0	0	0	Straight rail connecting to the north and south.
			1	1	Straight rail connecting to the east and west.
			2	2	Sloped rail ascending to the east.
			3	3	Sloped rail ascending to the west.
			4	4	Sloped rail ascending to the north.
			5	5	Sloped rail ascending to the south.
			6	6	Curved rail connecting to the south and east.
			7	7	Curved rail connecting to the south and west.
			8	8	Curved rail connecting to the north and west.
			9	9	Curved rail connecting to the north and east.