Territory
The department's extent and its administrative divisions. This family carries no layer to switch on: it defines the perimeter the others draw within.
Territory — Vaucluse boundary (84)
Always shown. Dashed outline of the department; a reference for framing. Lines in the same colour, solid or dotted, mark the outlines of the sectors at the territorial scale.
Territorial scale
Narrows the displayed network to one sector, at five scales: road agency (4), maintenance centre (11), canton (17), intercommunality (14), municipality (150).
How: pick the scale, then the unit in the list — clicking it again restores the whole department. Above twelve units a filter field appears. The map reframes on the sector, and the page URL keeps the choice (terr parameter), so it can be shared as is.
Maintenance sectors come from the operating limits of the departmental road network published by the Department on DataSud, attached to road sections rather than drawn as areas — 57 municipalities are served by more than one centre, so no official area exists to overlay. Each OSM section's sector is computed offline by proximity; the municipality and the canton are determined by inclusion in the OSM boundaries, and the intercommunality derived from the INSEE code via the État's API Géo.
The outlines of every unit of the chosen scale are drawn in dark blue: the whole division, not only the sector being filtered on. The selected sector thickens its line and takes a faint tint. Hovering an outline names it and gives its mileage; clicking it selects the unit, which saves hunting for one municipality among 150 in the list. A wide invisible band runs along each line so that it can be aimed at, but it sits below the roads: they keep priority for their own popups.
A single colour for every boundary, only the stroke pattern distinguishing them: long dashes for the department, a solid line for a constituency — canton, intercommunality, municipality — whose perimeter is exact, and a dotted line for a maintenance sector, whose perimeter is not. A road agency and a maintenance centre have no official boundary: their perimeter is rebuilt by attaching each municipality to the sector maintaining the most mileage within it. The panel states what that shortcut displaces — 2.1 % of the mileage for agencies, 5.8 % for centres. An intercommunality's outline is reassembled from the boundaries of its member municipalities, no source publishing it, and stops at the department boundary for the six that extend beyond it.
Relief. Picking a sector fades out everything around it: a veil covers the map, pierced to the exact shape of the perimeter. The sector stands out without being tinted or highlighted. The veil is translucent rather than opaque — the surroundings stay recognisable, and that is what tells you where the sector sits. It sits at the very back, so the neighbouring outlines still say what you would be clicking and the roads keep their full contrast.
The digest. Picking a sector splits the view in two: the map reframed on the sector on the left, what is known about it on the right — mileage, sections, routes, municipalities crossed, then three bar charts: the share of each network level, the share of each speed limit, and the five routes carrying the most kilometres there. Every bar carries the colour of what it measures: the network levels in their own colours, the speeds in those of the Limitations mode, and each route in the colour of the level where it carries the most kilometres — the colour it is drawn in on the map, right beside it. Nothing overlaps, so the sector reads whole beside its figures. The close button gives the width back to the map without losing the selected sector; on a narrow screen the pane becomes a bottom sheet. The digest is computed on demand from the sections the filter retains, so it describes exactly what is on screen.
The filter acts on visibility, not on styling: it combines with the Limitations mode, the hierarchy levels and the labels.