English: Chennai

   690 suburban train services.

Split up in Chennai

   West line:
       Chennai Central via Vysarpadi Junction DOWN (destined to any of Pattabiram, Avadi, Trivallur, Arakkonam, Tirutani):89 servicesof which there are only 3 fast suburban locals on this route.
       From any of these source terminal stations to Chennai Central UP: 91 services. Of this only 4 are fast trains.
       There is nothing called "Sunday Services" on the West Line.
       Chennai Beach via WST-Vysarpadi DOWN:24 services of which only 1 is a fast local.
       In Return to Chennai Beach UP: 25 services of which 2 are fast.
       Total for WEST Line = 229 services (towards suburbs = 113; towards MAS/MSB = 116)

   South Line
       Chennai Beach via Egmore to TBM/CGL/TMLP DOWN: 121 services (weekdays). Of this only 4 are fast trains
       South Line terminals to Chennai Beach UP:119 services (weekdays). Of this only 8 are fast trains
       Total for SOUTH line = 240 services weekday (121 towards suburbs, 119 towards beach)
   North Line
       Chennai Central via Korukkupet Junction and beyond DOWN: 37 services
       Return direction to MAS UP: 37 services
       No differentiation w.r.t sundays.
       No fast trains
       Chennai Beach via Royapuram ,Washermanpet Junction, Korukupet Junction and beyond DOWN: 4 train services only.
       Return direction to MSB UP: 5 train services only.
       Total for NORTH line = 83 services (41 towards suburbs, 42 towards MAS/MSB)
   MRTS Line
       Chennai Beach to Velachery DOWN: 67 services (weekday)
       VLCY to MSB UP: 67 services (weekday)
       Total for MRTS line = 134 services weekday (67 in each direction)
       There are no fast trains on the MRTS line too

   RARE, UNIQUE TRAINS Total services =4
       On Korukkupet-Vysarpadi Line: 3 = 2 in forward dir and 1 return dir
           Ennore to Trivallur (without touching Basin Bridge Jn and MAS) via Korukkupet Junction directly to Vysarpadi Jeeva Junction
           Similarly there is a Ponneri to Tiruvallur (and reverse) Local train that doesn't touch basin bridge jn.
       Chennai Beach to Chennai Central suburban train via Royapuram, Washermanpet Junction, Basin Bridge Junction.

Overall Total: 229 + 240 + 83 + 134 + 4 = 690 suburban local train services in Chennai (weekday)

Source of data alone: erail.in

Chennai: 303 kms of suburban network, 690 train services per day, 10 lakh people per day.

NOTE:

   MEMU Services excluded in this analysis.

Weekday analysis is considered - sunday analysis is not considered.