Many freeways within our major cities entering a critical phase of utilization. These facilities are becoming congested during peak periods and are not providing the "level of service" for which they were designed. All possible courses of action should be undertaken to improve the efficiency of freeway operation so that a desired level of service can be maintained. Past studies aimed at improving the efficiency of operations have primarily dealt with the design and operation of an on-ramp, the design and operation of an off-ramp, or the weaving on the freeway resulting from an on-ramp closely preceding an off-ramp (1-10). Existing freeway interchanges have been designed using the current "best" design for each of the ramps, but the location and configuration of the ramps have for the most part been accomplished in a standardized manner.
Samenvatting