The 501 operates from Moonee Ponds to Niddrie via Essendon, Strathmore, Pascoe Vale, Strathmore Heights and Airport West to Niddrie.
The 501 is operated by Kastoria Bus Lines.
29th July 1991 Timetable - A4 page
Weekdays
First services: 6am from Airport West to Niddrie, 7am from Moonee Ponds to Niddrie, 6.15am from Niddrie to Moonee Ponds.
AM peak frequency: Every 30 minutes until around 9am. The 8am from Niddrie has a school day only deviation via Niddrie High School. The 7.45am from Moonee Ponds deviates via Strathmore High School on school days only and the 8.15am deviates via Strathmore North and St Vincents Primary Schools, also on school days only.
Interpeak frequency: Every 40 minutes.
PM peak frequency: Every 30 minutes until around 6.30pm. The 3pm from Niddrie deviates on school days via St Vincents Primary School, the 3.30pm from Niddrie on school days only via Strathmore North Primary School and the 3pm from Niddire on school days only via Niddrie High School.
Last services: 5.45pm from Niddrie to Moonee Ponds, 6.15pm and 6.45pm from Niddrie to Airport West, 6pm from Moonee Ponds to Niddrie, 6.30pm from Moonee Ponds to Airport West.
Saturday
First services: 7am from Niddrie to Moonee Ponds, 8am from Moonee Ponds to Niddrie.
Morning frequency: Every 60 minutes.
Last services: 12pm is the last through bus in both directions, 1pm from both Moonee Ponds and Niddrie to Airport West.