The collection of mobility data through the validation of electronic tickets and smart cards allows to obtain personal information about users and their mobility patterns. Having this knowledge available, it is possible to forecast the passengers’ demand which is fundamental to optimize the allocation of resources (personnel and vehicles), the network planning, the frequency setting and therefore to reduce operating costs. Granda Bus consortium provides about 10 million smart card validations referring to the whole year 2019 in the Piedmont area, in the North-West of Italy. The study, conducted at the Links Foundation, exploits these data to answer the following research question: "What is the estimated public transport demand at one bus stop for a selected route, given a specific day and time slot?".