I see a cycle rickshaw in the distance, which is a strong indicator of South Asia. The buses have a distinct yellow and green color scheme often found in Bangladesh. The lush, tropical vegetation suggests a humid, warm climate. I suspect this is in Dhaka, Bangladesh. I am moderately sure.

then: forward

The Bengali script on the green bus confirms my suspicion of Bangladesh. The phone numbers and the "S.A Ambulance Service" branding are consistent with the region. The traffic is driving on the left side of the road. The presence of cycle rickshaws and these specific bus styles is very characteristic of Dhaka. I am quite confident this is in Dhaka, Bangladesh.

then: guess