Daniel Beall, of Summer Oak Court in Germantown, recently took first-place honors among 28 contestants in Montgomery County's sixth annual 'Roadeo' driving skill competition for its Ride-On bus system drivers. The drivers were judged on smoothness and safety of operation while maneuvering their buses through a 15-part obstacle course. The competion also consisted of a written test, a vehicle inspection and a uniform inspection.

Beall, a Ride-On bus driver in Gaithersburg and Rockville for the past three years, scored 740 points out of a possible 800. He received a trophy, a $350 cash award and a trip for two to Disney World in Florida.

Craig Glascoe, a Silver Spring and Bethesda driver who was the 1982 first-place winner, took second place this year. Nathaniel Lytes, who also works in Silver Spring and Bethesda, took third place, and Gaithersburg and Rockville driver Eartha Prophet was fourth. Music Teachers Elect Chase

Doris Chase, of Melinda Lane in Rockville, has been elected president of the Maryland State Music Teachers Association. Chase, formerly a vice president of MSMTA, is on the faculty of the Washington Conservatory of Music and also gives private piano lessons. Vocational Service Awards

The Maryland Rehabilitation Association in Baltimore recently honored six individuals and one organization in the state for outstanding service to the vocational rehabilitation of disabled persons. The awards, which are not necessarily given annually, and the honorees are:

*Humanitarian Award to Frank R. DeGeorge, associate legislative director of the Paralyzed Veterans of America in Washington. DeGeorge lives in Gaithersburg.

*Administrator of the Year Award to Mark L. Stancil, director of the Maryland Rehabilitation Center in Baltimore. Stancil lives in Severna, Md.

*Disabled Member of the Year Award to Jack W. Prail, a librarian with the Maryland Rehabilitation Center in Baltimore. Prail lives in Baltimore City.

*Mary E. Switzer Award to Karen Van Dyk, a founding partner of Vocational Counseling Associates in Bethesda. Van Dyk lives in Columbia. The award recognizes women who work with the disabled.

*Distinguished Service Aawrd to Robert A. Conant, assistant director of evaluation and placement at the Maryland Rehabilitation Center in Baltimore. Conant lives in York, Pa.

*Manpower Award to Paul W. Powers, director of rehabilitation counseling at the University of Maryland, College Park. Powers lives in Laurel. The award recognizes a person who has contributed to the professional training and growth of rehabilitation personnel.

*Organization of the Year Award to the Single Step Program sponsored by Dundalk Community College near Baltimore. The program, directed by professor Vince E. Chillemi, helps the disabled with nonphysical rehabilitation and transition back into the community.