HOV/T Modeling  We need at least two commodities:  1 = LOV (low occupancy vehicles)  2 = HOV (high occupancy vehicles)  Full access HOV/T lane experiences friction effect, when free flowing traffic in this lane slows down due to congestion in the parallel GP lane  We will incorporate friction effect into step 1 of LNCTM  Separated HOV/T lane needs a scheme for directing traffic from this lane to off - ramps  This will require additional, destination - specific, commodities  Destination assignment will be incorporated into step 1 of LNCTM