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used the same way as for railtypes

    ROTSG_CURSORS,                -> similar order as for railtypes, keep compatibility to tram action5, append more sprites at the end

    ROTSG_OVERLAY,                -> identical to tram action5

    ROTSG_GROUND,                 -> identical to tram action5

    ROTSG_BRIDGE,                 -> identical to tram action5 and identical to railtypes

diff --git a/src/road.h b/src/road.h

index dbc8be6..3ca4c14 100644

--- a/src/road.h

+++ b/src/road.h

@@ -215,8 +215,16 @@ struct RoadTypeIdentifier {

diff --git a/src/newgrf.cpp b/src/newgrf.cpp

index ade7c00..de7a4e7 100644

--- a/src/newgrf.cpp

+++ b/src/newgrf.cpp

@@ -4262,7 +4262,7 @@ static ChangeInfoResult RoadTypeChangeInfo(uint id, int numinfo, int prop, ByteR

  0 ·. gui                        ROTSG_CURSORS +  0

  1 .· gui                        ROTSG_CURSORS +  1

  2 ·. cursor                     ROTSG_CURSORS +  2

  3 .· cursor                     ROTSG_CURSORS +  3

  0 ·. gui

  1 .· gui

  2 ·. cursor

  3 .· cursor

  4 ·. overlay

***************

*** 68,78 ****

                          * risk compilation errors. The header AudioComponent.h

                          * was introduced in 10.6 so use it to decide which

                          * type definition to use. */