W4-1 (L&R) – MERGE
W4-2 (L&R) – LANE ENDS (SYMBOL)
W4-3 – ADDED LANE
W4-4p – CROSS TRAFFIC DOES NOT STOP
W4-4a – TRAFFIC FROM LEFT DOES NOT STOP
W4-4b – ONCOMING TRAFFIC DOES NOT STOP
W4-5 (L&R) – ENTERING ROADWAY MERGE
W4-6 (L&R) – ENTERING ADDED LANE
