Cumulative offer Bus on road sections

**Description:** Geographical layer representing the road network used by regular commercial bus lines authorized to operate by Ile-de-France Mobilités with cumulative number of crossings per day.​ For three types of day (weekday, Saturday, Sunday), the layer makes it possible to identify the bus lines using the road section under consideration with multi-line cumulation of the number of passages and contribution to the total of each of the lines.​ **This dataset is linked to the datasets: ​** [Traces of regular commercial bus routes in Ile-de-France](https://data.îledefrance-mobilites.fr/explore/dataset/traces-des-lignes-regières-de-bus-en-ile-de-france/information/) as regards route layout. Date of validity of the routes used: April 2025​ [Ile-de-France public transport line repository - active and soon to be active](https://data.îledefrance-mobilites.fr/explore/dataset/line repository/information/?disjunctive.transportsubmode&disjunctive.operatorname&disjunctive.networkname&disjunctive.transportmode&disjunctive.id_bus _contra) as regards the identification of ​ bus lines [Scheduled timetables on the Ile-de-France public transport lines (GTFS Datahub)](https://data.îledefrance-mobilites.fr/explore/dataset/offer-hours-tc-gtfs-idfm/information/) as regards the number of passages on the days in question (concept of race / trip-id of the GTFS). Days taken into consideration: 01/04/2025, 05/04/2025, 06/04/2025, ​ ​**Genealogy ​:** The underlying road repository is the IGN BD-TOPO road database. At the margin and for technical reasons, certain sections were added during processing.​ ​**Quality ​:** In multi-lane/counter-lane configurations, the generation algorithms of this layer can embed short stretches of track that are generally perpendicular/biased to the general direction of line paths, thus generating artifacts. ​ In these multi-lane configurations, the offer may be spread over several parallel road sections depending on the direction of traffic. ​