The line is 18.3 kilometers (11.4 mi) long, and has 17 stations, and its main colour is brown.

The arms also have differing designs for their respective neighboring stations, with the arm pointing to the next station having a tipped end and the arm pointing to the preceding station having a concave indent; the Hangul name is printed in the brown half while the grey half houses the English and Hanja names.

The current station's number is also printed close to the top, above the Hangul name.

Due to the Daegu Subway Fire in 2003, all of Line 3's stations were built with platform screen doors.

Line 3 greatly increased the efficiency of the entire Busan Metro system.