The qualifications are: Promotional: One year of permanent competitive, non-competitive, 55-b/55-c, or labor class service as follows: Bridge Repair Assistant, Construction Equipment Operator, Equipment Operator Instructor, General Mechanic, Trades Generalist, Highway Equipment Operator, Highway Maintenance Worker 1, Highway Maintenance Worker 2, Maintenance Assistant, Pavement Marking Supervisor, Sign Crew Supervisor, Tree Pruner, Tree Pruner Supervisor, Bridge Repair Mechanic, Trades Specialist (Bridge), Assistant Drill Rig Operator, or Drill Rig Operator. • On large maintenance projects, the selected candidate will supervise a phase of the project under the general direction of a Highway Maintenance Supervisor 2. HMS 1 is a working supervisor who: • Operates light trucks and heavy dump trucks, performs one-person snow plowing, and operates other pieces of highway equipment, as necessary.