If you're a Marylander driving on a suspended or revoked license, you'd be smart to get out from behind the wheel and start riding a bus or a bike.

State officials are compiling a computerized "hit list" containing several thousand names, and these will be distributed to the state police and to local law-enforcement agencies that request it. They will be updated frequently. Thomas Smith, superintendent of state police, said a crackdown by his force will begin Oct. 1.

William Bricker, director of the state Motor Vehicle Administration, said the list will include the driver's name, address, driving record, license number and make and model of his or her registered car.

In addition to listing those with suspended or revoked permits, the printouts will list drivers who repeatedly have been convicted of serious driving offenses. Smith said troopers will be told to "keep an eye" on these drivers who, he asserted, "have serious flaws in their personalities -- it's just like a person with a gun . . ."

While on the subject of driving, here's news for Arlington commuters: Starting Tuesday, according to county traffic engineering chief William C. Scruggs, daytime left turns by drivers headed toward downtown Washington will be prohibited off Old Dominion Drive at its busy intersection with Lorcom Lane.

Instead, drivers should keep to the right at El Palacio restaurant, following Lee Highway to its intersection with Lorcom. There you can make the turn. An added benefit: new signals to make it safer for pedestrians to cross the Old Dominion-Lorcom intersection.

An era ended in downtown Washington yesterday when the soda fountain and lunch counter in the Investment Building, 15th and K streets NW, closed after 57 years of operation.

Ted Davidov, owner of the Ambassador Pharmacy and operator of the fountain, said the shutdown was required by the new owners of the building, who plan to upgrade the structure and now forbid delivery of food through its corridor from a remote kitchen. In recent years, Davidov said, the fountain has not shown a profit.

Davidov said the fountain, a three-bay facility made of rare Italian marble, will be preserved and reconstructed for use at another undecided location.

Because of an increase in the mumber of rabies cases reported recently, the Loudoun County Health Department is sponsoring two inoculation clinics for pets this weekend -- today and tomorrow from 1 to 3 p.m. at the animal shelter near Waterford, and tomorrow only from 1 to 3 at the Middleburg fire house. A $4 fee will be charged.

The Virginia chapter of the National Organization for Women, pushing for the General Assembly's ratification of the Equal Rights Amendment, asked supporters to go without food one day a week in a "fast for equality." Patricia Winton, a NOW state coordinator, urged that the money saved on food be contributed to a lobbying fund.

And finally, a reminder that almost everything has a silver lining. In a notice published in the D.C. Register scheduling a hearing next month on a plan to turn F Street in downtown Washington into a historic district, the D.C. Joint Committee on Landmarks informed property owners with a straight face that such a designation would, among other things, "make it less likely that surface mining of coal will be permitted by the state or federal government.