1.Dadar have 2 Stations ?
Yes, Dadar have 2 passenger terminals. In Mumbai, their are two Railway Routes (Western and Central Railway) running parallel to each other, they come close at Dadar Station. so Dadar Railway Station is present on both railways. Central Railways Dadar Station is denoted by DR whereas Western Railways Dadar Station is denoted by DDR. Passengers can easily pass from Western Railway of DDR to central Railway of DR by Foot Over Bridge.
Here i attach the platform plan of a both DR & DDR...
more... (Image-1)
2.Is there other stations like this ?
In UP, we can see LKO & LJN. LKO refers to Lucknow Charbagh Railway Station which comes under Northern railways zone. LJN refers to Lucknow Junction, situated at West end on Charbagh railway station falls under North-Eastern Railway zone. Both are different stations but part of Charbagh station.LJN is a terminus station as lines terminate at this station & Loco change direction takes place at this station whereas Charbagh Railway station is one of the busiest railway station with 200+ passing trains. Here you can see the platform plan of both LKO & LJN. (Image-2)
Note: Information source from Google