Bounding box annotation service is a widely used model for machine learning where a box is been drawn over the object labelling it with an object class. This box is tightly drawn with no loose end over object and this method is basically used to train autonomous vehicles to detect the various objects on the streets like lanes, traffic, potholes, signals, and other objects. At Uniworld Outsourcing, our team of expert put in great focus, consistent effort for this simple looking task for accurate annotation.