Nail the Enigma - II

In my continuing effort to cut down on the length of prose and a comeback to poetry, here is the second edition of Nail the Enigma...

The rules are simple...figure out the theme / concept / meaning / subject / situation etc. So, here we go...

Sanity broken by a murderous tangent
Contoured map with endless routes
Wrinkled rubber of age-old routine
Tanned tales and coloured rules

Nail this enigma and pin your comments to see who gets the closest to what the lines actually mean. Till the next cut is delivered...