Here are the assets of type track listed for me. I have a couple of missing dependencies so it might not be complete:
<kuid2:122285:4005:12> JK Junction Wire (Grey 2 Core)
<kuid2:77573:38181:2> 18inch mine rail only track (50cm)
<kuid2:316:38003:3> Austin superbendy Track only
<kuid:214658:100011> Protrack F Rusty Grit/Dark Timber
<kuid2:122285:1003:2> AJS Track Eraser
<kuid2:283805:2804105:4> UK Bullhead- Wooden tunnel track
<kuid2:84609:38025:1> Angle Plate Bridge 2T LH
<kuid2:84609:38030:1> Angle Plate Bridge 2T RH
<kuid:523:19721154> Auran Track Tunnel
<kuid2:116296:36666:1> Turntable track
<kuid2:68236:38010:5> Ash Pit v3
<kuid:-25:1320> Auran Concrete Track Procedural (1 track concrete)
<kuid2:67598:38001:5> inviso rail
<kuid2:52519:38001:1> Dock Rails
<kuid2:60238:37037:3> Track Blue Invisible in Driver
<kuid2:72730:37101:5> gt bridgetrack 1
<kuid2:122285:4001:12> JK Junction Wire (Blue)
<kuid2:122285:4004:12> JK Junction Wire (Green)
<kuid2:63290:38102:1> MAN6 Invisible Track
<kuid:84609:38047> Ropeway_Track
<kuid2:35412:38111:1> MB finescale track no ballast
<kuid2:35412:38999:1> MB invisible test track
<kuid:35412:38084> MB NG track 1m no ballast
<kuid2:35412:38073:1> MB overgrown track
<kuid2:67906:38051:1> UK Concrete Single Line
<kuid2:35412:38051:1> MB rail only track
<kuid2:79563:90009:3> UK Bullhead- Wooden 09
<kuid:84609:38041> NG_24inch_Industrial_Track_No_Ballast
<kuid2:195134:800008:1> Protrack B Grit/Dark Timber
<kuid2:61119:38802:1> Track Only Rusty
<kuid2:35412:38994:1> Railsim invisible track
<kuid2:84609:38050:1> Ropeway_Track_&_Pylon_2t
<kuid2:79563:1062:1> UK Bullhead- Wooden Rusty
<kuid:-25:1062> TANE 1Trk Wood
<kuid2:79563:9001:2> UK Bullhead- Wooden 09 rusty
<kuid2:30501:1001:10> TANE Trk Oak
<kuid2:523:1216:3> TANE Trk Rails Only
<kuid:-25:1182> Track Invisible
<kuid:-25:894> Track No Gravel
<kuid2:60238:37039:4> Track Red Invisible in Driver
<kuid2:122285:1501:1> Turntable Track
<kuid:70030:38032> voie France sombre
<kuid2:1854:15000:2> VT invisible track
