There are lights installed on WHSD for lanes traffic control and variable signs, which are used to change the driving mode (for example, to set speed limits).
The lane is closed
The lane is open
End of the lane, it’s necessary to merge in the indicated direction
Road works ahead
Other dangers on the road
To improve traffic safety, additional information about changes in traffic conditions is displayed on the boards.
There are additional signs installed in the toll plazas area, which help different categories of vehicles to choose the appropriate lane on the highway.