A Metro article {Nov. 3} correctly pointed out: "The Dulles Toll Road is no longer adequate during rush-hour periods to serve the needs of businesses and residents." This statement is brutally obvious to anyone inching along in eastbound traffic during rush hour. What is especially painful for the drivers stuck in the toll road quagmire, however, is the lack of traffic on the adjacent Dulles Access Road.

The article also cited a recent spot-check of traffic on the access road, which found that it is operating at only 27 percent of capacity. This figure is misleading, however, since probably one-half of that traffic is not airport related. At least half of the access road's traffic stems from drivers entering the airport and doing a U-turn over the services bridge to avoid both the slow traffic on the toll road and its 85-cent toll. Actualairport-related use of the access road, therefore, is probably only about 14 percent of capacity at a maximum.

To ease the traffic problem on the toll road and recover lost toll revenue, the airports authority should consider opening the access road. Direct access to this road from Rte. 28 could easily be worked into the construction currently under way there. Drivers would then have a straight, uncongested shot onto the Beltway after paying a flat fee of 75 cents. (A slightly lower fee would encourage drivers to use the new access.) Strict time limits could be imposed to open the new access only during rush hour (i.e., 7 a.m. to 8:30 a.m.).

With the new access open, U-turns would likely decrease, since many drivers are turned off by the traffic, not the toll. Who knows? This workable solution might inspire the traffic authorities to ease traffic congestion further in toward the Beltway during rush hour.

ERIC T. MARNELL Chantilly