furthermore, going down a wrong street, or entering the wrong neighborhood, can result in personal safety problems. the city built an extensive network of bicycle paths that can be used to move safely around some of the main neighborhoods in the zona sul, and in other parts of town - thus visitors should limit themselves to these passages. another important factor to remember is that the high temperatures, even on cloudy days, can result in quick exhaustion, thus riders should always bring along a bottle of water, sunscreen, and perhaps a hat to prevent sunburns - rainy days in rio can at times last all day and can make riding a bike, even at the designated cycle paths, dangerous so it is best to opt for a sunny day.
