Editing Traffic warning sign (section)

=== Merge to stay with through traffic ===
[[File:Vienna Convention road sign Ab-19c-V2-1.svg|thumb|120px|left|Vienna Convention merging traffic sign (yellow diamond)]]

In the [[United States]] and [[Canada]], there is special signage for lanes that are about to exit, so that drivers who wish to remain on the main road have adequate time to merge. Such lanes are sometimes indicated by special striping ("alligator stripes") and the sign, "Through Traffic Merge Left" (or right). On freeways, the green directions sign for the exit ramp may have the additional notation, "Exit Only", and should have black letters on a yellow background for emphasis.