Historical clue formulations

• Short blast from a horn — 2026-04-27
• Highway attention-getter — 2025-11-21
• Choo-choo train sound — 2025-10-03
• Honk — 2025-02-09
• Palindromic example of onomatopoeia — 2024-01-13
• Palindromic tugboat sound — 2023-08-28
• Horn sound — 2023-08-13
• Call from a tugboat — 2023-06-11
• [Go! The light turned!] — 2022-10-21
• Spree — 2021-12-18
• Play a trumpet, e.g. — 2021-10-11
• Blow a whistle — 2020-09-22
• [C'mon, the light turned green!] — 2020-08-28
• Friendly honk — 2020-07-29
• Blow one's horn — 2020-05-07
• Spree — 2020-03-18
• Drinking spree — 2019-08-13
• Drinking spree — 2019-06-20
• Friendly greeting on the highway — 2019-01-13
• Blow on a horn — 2017-11-28
• With 18-Across, what a boastful guy might do — 2017-09-14
• Road rage sound — 2017-02-03
• Palindromic blast — 2016-11-23
• Palindromic blast — 2016-07-24
• Horn sound — 2015-06-24
• Warning on a highway — 2014-07-08
• It might mean "hello" or "goodbye" to a driver — 2014-04-18
• Drinking binge — 2014-03-23
• Beep — 2014-01-21
• Blow a whistle — 2013-11-19
• Binge — 2013-05-26
• Warning from a driver — 2011-04-10
• Tugboat's call — 2011-03-16
• Barfly's binge — 2011-01-04
• Driver's nonverbal "hello" — 2010-09-07
• Trolley warning — 2010-03-02
• Blow the whistle — 2009-08-09
• Blow — 2009-03-06
• Spree — 2009-02-04
• Sound of impatience — 2008-02-23
• Horn sound — 2007-07-23
• Attention-getting sound — 2007-06-13
• Horn sound — 2007-02-06
• Tugboat signal — 2006-08-09
• It's a blast — 2006-07-29
• Honk — 2006-07-16
• Traffic sound — 2006-06-14
• Binge — 2006-03-16
• Tugboat sound — 2005-07-13
• Sound of impatience — 2005-04-22