there are various apps that can be easily download on smartphones that can help with the car rental process as well as the navigation once a vehicle has been hired - here is a selection of some of the apps that can be useful in the city of rio de janeiro.

the google maps app is a real time navigation service that assists users with traffic and transits, for public and private vehicles - the application allows the use of offline maps to navigate as well as the option to view previously starred destinations.

if connected to a google account online, one can also access information through the use of a computer - this mobile application is all in all useful for users traveling by car as well as those opting to use trains, buses, walking, and other means of transportations -  more information can be foundvia i-tunes here.