And quick regs question: what year did FMCSA introduce the 34-hour restart, and when did they tack on then roll back the two 1–5 a.m. periods? I remember dialing my clocks on I-80 in 2013 to hit those overnight windows without busting my 14.
Pretty sure the 34-hour restart came with the 2003 HOS (effective Jan ’04), the “two 1–5 a.m.” went live July 1, 2013 (I still twitch when the dash hits 1:00), got suspended Dec 2014, and was made permanent history in 2017. FMCSA’s HOS page backs it up: https://www.fmcsa.dot.gov/regulations/hours-service; some folks cite 2005 after the court mess, but the restart itself traces to ’03/’04 — line up with your 2013 memory?