Additional information on a sign is given on rectangular and supplementary panels. Additional panels are white, the writing and any symbols on the panels are black.

501 Distance panel. used to display the distance to a danger spot or a place where there is a restriction.

502 Display of distance and direction. An indication of distance and direction.

503 Route length. The length of the route on which there is danger, a restriction applies or a regulation has to be followed.

504 Repetition sign. Indicates that a signal is repeated.

505 Beginning sign. For the stationary traffic, the start of the route is displayed with the "Beginning sign".

506 End sign. For the stationary traffic, the end of the route is displayed with the "End sign".