抄録
The goal of this research is to establish spacing requirements for access points to managed lanes (MLs) with respect to the location of entrance and exit ramps on the general purpose lanes (GPLs) of the freeway. Traffic entering the freeway destined for the ML must weave across the GPLs. Traffic exiting the freeway from the ML must also perform this maneuver. The process of developing guidelines can be achieved by the sensitivity analysis of capacity with respect to the ML access spacing. Microscopic simulation is used to develop guidelines. The key factor in determining the required ML access spacing is the ramp to ML flow (or the ML to ramp flow in the exit ramp case). In the simulations, the capacity increases as the weaving distance increases to a point where the maximum capacity is found. Minimum required weaving lengths are selected where the increase in capacity levels off.
