Variable:trackpieces

This bitmask controls what pieces are available for the track, trackmod, roadmod or train station.

stationtrackpieces and curvetypes are exactly the same.

0x00 diagonal - Diagonal piece
0x01 widecurve - Wide curve, 45°, 2x3 (Normal Train Tracks)
0x02 mediumcurve - Medium curve, 90°, 3x3
0x03 smallcurve - Small curve, 90°, 2x2
0x04 tightcurve - Tight curve, 90°, 1x1 (Narrow Guarge, Roads and Trams)
0x05 normalslope - Normal slope, up/down, 1x2
0x06 steepslope - Short slope, up/down, 1x1 (Narrow Guarge, Roads and Trams)
0x07 bit_7 - Trackpieces for the railway to run on just on side of a tile (like a single tramtrack). It seems that this is not fully implemented though, slopes can be build per side, but Locomotion does not take any tiles to display them.
0x08 slopedcurve - Sloped curve, up/down, 90°, 2x2
0x09 sbend - S-Bend, 2x3
0x0A bit_A - Allow switches and junctions

for sloped and curved bridges go to disabledtrackcfg.