• Old Airport Road, officially Madivala Machideva Road, runs from the Trinity Church Road and Victoria Road junction to the HAL Airport, Marathahalli, and onward to Varthur, about 17 km in all.
• It was renamed after the city's airport moved to Devanahalli, but stays one of the most significant east side roads for its accessibility toward Whitefield.
• It carries a heavy concentration of hospitals, premium hotels, the HAL campus, the ISRO satellite centre, and apartment and office complexes, and is known as one of the busier traffic stretches in the city.

The corridor strings hospitals, hotels, and the HAL campus along its length, with offices and apartments between them. Buses running the full road pass all of these in one stretch, which is what makes the corridor itself the high-visibility asset.

The corridor has its own route family, the 320 to 339 series running from MG Road to HAL and Kadugodi, with the airport services and cross routes joining it. The routes below are the high-frequency ones. Numbers and exact stops are simple to verify on Google Maps or BMTC route search by entering a from-and-to point along Old Airport Road.

• The 320 to 339 family is the spine, running the full road from MG Road to HAL, so a single branded bus crosses the hospitals, the hotels, the HAL campus, and the offices in one trip.
• Old Airport Road is known as one of the city's busier traffic stretches, so buses spend long minutes in slow traffic, which lengthens the time the branding stays visible.

Route numbers and coverage compiled from public BMTC route listings and map-based route search for the Old Airport Road corridor; services and frequencies are revised by BMTC from time to time.

Stops run the length of the road, clustering at the hospitals, the hotels, and the HAL gates. These are the busiest, where patient, office, and through footfall meet, so a branded bus halting here gets long viewing windows from a waiting crowd.

• Old Airport Road's audience is varied for a single road — hospital patients and visitors, hotel and hospitality guests, the HAL and ISRO workforce, office workers, and the residents of the apartment complexes.
• The hospitals and hotels keep footfall high through the day and beyond office hours, with Manipal and the Leela stretch busy almost continuously.
• It has no metro running on the corridor itself, with the nearest links at Indiranagar and the central stations, so BMTC buses and the airport services carry the bulk of the public commute here.
• A separate bus ridership figure for Old Airport Road is not published, but for scale BMTC sells more than 30 lakh tickets a day across the city, and this corridor is one of the busiest east side arterials.