One Traffic is Waze-like mobile navigation application which helps travelers to get the necessary information about relevant factors and actors on the road – its main purpose is communication among aII the actors in the traffic. The application is San Francisco and Norway’s start-up with a huge potential to be spread to other foreign markets. It was developed in nine months at Zesium company and has Android and iOS versions. The application was made to help people while traveling and make the way they commute safer, easier, and faster. The communication is obtained between all the parties in the traffic (gas stations, motels, hotels, service stations, etc), as well as participants involved directly/indirectly in the traffic (police, road works, road conditions, infrastructure, etc). The application combines all the important details on the desired route and provides safe communication between the objects and people, without disturbing others in the traffic. OT application sends alerts to drivers if an accident occurred on their route and/or how long the blockage will last; it also suggests optional routes to drivers, with all the details needed regarding the new route such as information about traffic jams or if there is a police patrol on the road – all in real time. OT design was developed by Zesium design team – they created and recommended specifications to the client who carefully managed the UX based on their experienced developers.