A 34-year-old telephone repairwoman was kidnaped yesterday at gunpoint by two men who forced her into the back of her truck, tied her up and used her tools to pose as repairmen in an apparent attempt to gain entry to homes in Northwest Washington, D.C. police reported.

They said the woman was able to free her hands and rolled out of the truck onto the street, where pedestrians rushed to her aid and called police.

Her abductors fled from the truck a short time later and escaped on foot, police said, and were still at large last night.

Police did not release the woman's name because they said they feared for her safety. The woman was reached last night by The Washington Post and agreed to a brief telephone interview, on the condition that her name not be used.

"It was a terrifying experience," she said. The woman added that she is the mother of "several" children and has been employed by Chesapeake & Potomac Telephone Co. for "quite some time."

The incident began, she said, as she was leaving a house in the 1200 block of Lamont Street NW about 9:20 a.m. after making a routine service call.

Two men, both of whom were armed with handguns, forced her into the back of her truck, she said, and used belts to tie her hands and legs.

The men took her tool belt, she said, and drove her around the Northwest section of the city for about two hours.

Police said the men made several stops and, posing as telephone repairmen, attempted to enter a number of homes, ostensibly to check on the telephone service.

However, police said, their efforts were unsuccessful.

About 11:30 a.m., police said, the woman was able to free her hands, and as the truck was traveling near Western Avenue and River Road, she rolled out the back and onto the pavement.

Several people ran to her aid, police said, and one of the pedestrians pointed to the fleeing truck and yelled to a passing motorist to follow it.

The car pursued the truck to the intersection of Wisconsin Avenue and Garrison Street, where the woman's abductors jumped out and fled on foot in the direction of the Friendship Heights Metro station, police said.

They said the men escaped, possibly by using the subway system.

The abductors kept the woman's utility belt, and police said they are particularly concerned that the pair may use it as a disguise in future attempts to enter area homes.

Police asked that anyone with information call the robbery squad at 727-4400.