Purpose

Diagram markers (ticks, interchange rings) and connection pictograms used by strips and maps. Protected TfL mode roundels remain env-gated — see the Roundel page.

Safe examples

National Rail

NR pictogram ships for interchange labelling. Do not treat it as permission to use other protected TfL marks.

Do / don’t

• Do use diagram geometry helpers for ticks and rings.
• Do gate the Roundel behind explicit brand permission.
• Don’t imply installing components grants TfL trademark rights.