Harvard will begin an experimental bus service for students and employees between the Yard, Radcliffe and the Business School on September 24.

Shuttles, which will operate at least three times an hour every day between 4 p.m. and 2 a.m., will be free.

The Administration, the Faculty of Arts and Sciences, and Radcliffe will provide the estimated $30,000 needed for the yearlong project, Robert E. Kaufmann '62, assistant to the dean of the Faculty of Arts and Sciences for Financial Affairs, said Friday.

"The major reason for instituting the shuttle is a matter of security, but we hope that it will serve a number of different constituencies and uses," Kaufmann said.

Harvard experimented with a Radcliffe shuttle in 1966, but discontinued the service because few Radcliffe women used it.

The idea of a shuttle service was again brought up when men moved to Radcliffe in 1970. Stephen S. J. Hall, vice president for Administration, said last week that demand for bus service to Radcliffe has increased with coeducation. Last spring many freshmen athletes assigned to Radcliffe requested a bus to Dillon Field house to give them easy access to Soldier's Field's facilities.

The buses will leave from the B-School parking lot and wind their way to Widener Library, stopping at each house. Connecting shuttles to Radcliffe will leave from Widener and drop riders off at 29 Garden St. (the old Hotel Continental) and Radcliffe Quad.

Harvard will lease buses for the first year or until the project proves successful enough to warrant their purchase, Hall said last week.

No schedule for the service has been released yet.