About 4 minutes
Transport lines and map styles
Colour, thickness, pattern and curvature help you identify transport modes and grades without opening a route.
The four transport modes
Road grades
Roads are solid. Each grade has its own colour and base width. Additional lanes increase the line width without changing its colour.
#0057D9#00758C#7050A0#68472F#454D54Rail grades
Railways use alternating coloured and pale centre segments with thin parallel edges. More tracks make the railway wider.
#707070#2060C0Ferries, bridges and tunnels
Bridges keep the normal road or rail style. They do not receive a separate overlay.
When the congestion overlay is on
The overlay replaces normal road and rail grade colours with operating-status colours. Route labels are hidden so the status view remains readable, and tunnel styling is suppressed for the same reason.
A Peak / Avg switch appears beside the toggle. Peak reads the busiest-direction pressure that drives congestion and travel-time loss; Avg reads the smoother month-long picture. A corridor can look calm on Avg while its peak is over capacity.
Opening a data panel that takes over the map hides the overlay temporarily and restores it when the panel closes. The checkbox stays ticked throughout—the overlay has not been switched off.