Welcome to the Golden Quadrilateral. Started in 1999, this is India’s largest network of highways which connects its main cities: Delhi, Mumbai, Chennai, and Kolkata. Completed in 2012, the Golden Quadrilateral has made transport of goods across India much easier and safer. Most importantly, it is one of India’s most well-maintained transportation system; on our 160 km journey from Kolkata to my hometown Katwa we paid tolls approximately five times. However, this also means a smooth ride and no potholes!