on-ramp
US /ˈɑːn.ræmp/
UK /ˈɑːn.ræmp/
1.
an inclined road or ramp leading from a road or highway onto another highway or freeway
:
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Take the next on-ramp to merge onto the interstate.
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There was heavy traffic on the on-ramp during rush hour.
an inclined road or ramp leading from a road or highway onto another highway or freeway