Vehicle-cpp/Nav/autoware_src/autoware/messages/autoware_map_msgs/msg/WaypointSignalRelation.msg

# This represents the relationship between waypoint and traffic signal

# Id of refering Waypoint object
# Vehicle is meant to stop at this waypoint when refered traffic signal shows red signal
int32 waypoint_id

# Id of Signal object related to the waypoint. 
int32 signal_id