Historical clue formulations

• Freeway access points — 2015-12-07
• Things that lead to mergers? — 2013-01-02
• They'll get you going with the flow — 2012-06-16
• Merging locations — 2011-03-25
• Interstate entrances — 2010-05-26
• Accesses — 1999-12-25
• Access ways to major arteries — 1994-02-12