Volunteers with sufficient experience are able to apply for a position as a volunteer shunter and driver. The criteria for becoming a volunteer shunter is 2 years active volunteering and 5 years active volunteering for the volunteer diesel driving. A selection programme runs each year and initially covers shunting and diesel driving, with potential also to progress to steam driving. Currently, most of the daily diesel turns during the main season are operated by volunteer drivers. A typical volunteer driving turn is between 3 to 4 round trips per day depending upon the timetable.