Generally, in the Skills menu, in Inventory filtering menu, and in Alt+... shortcuts, "T" is used for tracking, and "R" for trapping.
But in the Shift+M "Make" menu, "T" is assigned to trapping, and "R" to... transport.
I believe it should be the other way, "R" should *always* be for trapping in every possible menu.
"T" can be used for transport in the crafting menu I guess - though I still think it would be more appropriate to use "V" which is already used for fltering vehicles in the inventory.
For more visual clarification let me add a table:
current result | Alt + ... | SHIFT + M + ... | s + ... | i + Tab + ...
--------------------------------------------------------------------------
trapping | R | T | R | -
tracking | T | - | T | -
transport/vehicles | - | R | - | V
expected result | Alt + ... | SHIFT + M + ... | s + ... | i + Tab + ...
--------------------------------------------------------------------------
trapping | R | R | R | -
tracking | T | - | T | -
transport/vehicles | - | V | - | V