New adhesion model considering fictive one-big-axle dynamic model, wheel slip curve and dynamic adhesion limit.
It can be disabled by UseAdvancedAdhesion property of MSTSWagon class.
Without AntiSlip control.
Weather conditions randomized and smoothed.
git-svn-id: http://svn.uktrainsim.com/svn/openrails/trunk@692 a9f3cfff-6c41-7446-b0ca-052bd761e6eb