This deliverable is part of Work Package 5 "Guidelines & tools for low emission training," one of the project's five technical work packages. Furthermore, this deliverable is the result of Task 5.2. "Functional specifications of tools," which aims at defining the specifications to develop MODALES’ mobile app and web dashboard in Task 5.3. The aim of these tools is to collect and analyse the driving patterns of individuals to adjust a user’s driving style, with a specific aim on emission reduction. To achieve that, relevant user information such as accelerometer, gyroscope, location and OBD data will be collected transparently and continuously for the sake of developing a Driving Assistance tool for Low-Emission Driving (current working name: DALED). Based on the collected information, the proposed system would aim to provide two types of recommendations. On one hand, active recommendations will offer straightforward recommendations while the driver is on the way, which would reduce high-emission driving styles by providing immediate corrective actions. On the other hand, passive recommendations will be about analysing and understanding a user’s driving behaviour patterns and contextual information (e.g., on traffic jams, weather) to generate a post-driving report that could be used for encouraging users for safe driving practices and possibly offer rewards for good driving behaviour.