Eight buffet cars coded RS were originally constructed by Commonwealth Engineering and numbered 2299 to 2306. A ninth car numbered 1962 was constructed at Eveleigh Carriage Workshops in 1965. The interior design of these buffet cars was based on the buffet cars built by Victorian Railways in 1938-39. Instead of tables and chairs with a centre aisle they were fitted with a long counter and 27 stools that ran the length of most of the car. Food preparation was mostly carried out behind the counter, along with a small kitchen at one end of the car.
In 1973 to handle the heavy bookings on the Intercapital Daylight two of the RS cars (2299 & 2306) were rebuilt as ABS dining cars. These cars were fitted with fixed tables and loose 48 seats, the separate kitchen was also enlarged and rebuilt. Due to objections by the Victorian Railways these rebuilt cars were not used on their intended service but on the Gold Coast Motorail instead. During 1975-76 a further four were rebuilt as ABS type cars (2300, 2302, 2303 & 2305) to provide dining car service on the Brisbane Limited and North Coast Daylight Express. In 1985 RS 2304 was also rebuilt as an ABS car, but this car varied slightly by having low partitions separating the tables with fold down seats from these partitions.[17] As the other ABS cars received workshop attention in the mid-1980s most also received this altered seating. In June 1989 RS 2301 was rebuilt as an 80 seat interurban car with no toilet to operate on the South Coast Daylight Express in company with 1100/1200 class carriages and recoded BKS.
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