Historical clue formulations

• Halting, as rush-hour traffic — 2021-10-11
• Congested, in a way — 2019-05-25
• Like some traffic — 2017-10-19
• Like much rush-hour traffic — 2013-09-15
• Like some traffic — 2009-10-29
• Like some traffic — 2005-10-29
• Like city traffic, often — 2003-11-02