Bogota has the least safe public transport system for women in the world, according to a report by Thomson Reuters Foundation.
After polling company YouGov interviewed 6,555 women and experts in 16 cities, findings showed that that six women out of 10 experience harassment while using transport systems in major Latin American cities, with the capital of Colombia topping the list for the most unsafe means of transport.
Bogota was followed by Mexico City and Lima.
India's capital New Delhi was fourth worst city for public transport security. In December 2012, a woman travelling on a bus with a friend was gang-raped by six men, including the driver. She later died in a hospital.
New Delhi was followed by Jakarta, Buenos Aires, Kuala Lumpur, Moscow, Manila, Paris, Seoul, London, Beijing and Tokyo.
New York ranked as the safest city for women to travel by public transport.
Researchers attributed the safety of New York's transport system to its extensive use of CCTV cameras, heavy police presence and communication points where concerned passengers could report abuse.
Thomson Reuters said polling could not be conducted in five other large capitals - Cairo, Dhaka, Kinshasa, Tehran and Baghdad - due to conflict or an inability by YouGov to guarantee the necessary online sample of women.
The full list, starting with the worst ranked, is as follows: