Updating of user requirements of elderly and disabled drivers and travellers

The user requirements have been reassessed in the light of the results from the collaborative evaluations with other Transport Telematics Projects, as well as data and expertise gathered from the literature and other experts in the field. The user requirements identified are also the fundamental base for the development of different parts of the TELSCAN project. User requirements cover, of course, a multitude of different aspects, and to demonstrate how they have been integrated into the project’s output, they have been grouped into the following categories: • System function requirements • Interface requirements • Information requirements • Protocol requirements.