Delhi city bus route no 521 operated by DTC (Delhi Transport Corporation), which runs multiple number of city buses between Karampura Terminal and Ambedkar Nagar Sector 4 (Virat Cinema) everyday.
DTC is one of the largest CNG-powered bus service operator in the world and connects almost every part of Delhi and NCR (National Capital Region) with its huge network of buses.
This DTC 521 route city bus runs about 16 trips every day (one-way) and passes through 50 bus stops during the one way trip.