A new sleep study has left the trucking community confused, conflicted, and slightly offended after researchers claimed that babies sleep better when exposed to the steady sound of semi-truck engines.
According to the study, low-frequency, rhythmic noises – similar to a semi truck idling or cruising at a steady speed – helped infants fall asleep faster and stay asleep longer. Researchers compared the sounds to traditional white noise, heartbeat recordings, and ocean waves, but found engine noise surprisingly effective.
Truckers were immediately skeptical.
“I’ve spent my whole career trying to get away from that sound,” said a driver parked at a rest area in Iowa. “Now people are using it as a lullaby?”
Fueling the reaction are dozens of videos circulating online showing parents rocking babies to sleep while playing recordings labeled ‘Semi Truck Idle’ or ‘Diesel Engine – Steady RPM.’ Some clips feature footage of trucks idling at truck stops, others use pure engine audio played through speakers next to cribs and bassinets.
Parents in the comments swear by it.
“One minute of engine noise and he’s out,” one parent wrote. “We tried rain sounds, nothing worked. The truck did.”
Sleep specialists say the trend isn’t as strange as it sounds. Repetitive, low-frequency vibrations can be calming for infants, mimicking the constant motion and sound they experience before birth.
Truckers, however, remain unconvinced – and slightly disturbed.
“I shut my truck off and still hear it in my head,” one driver said. “Now I find out babies want that sound? That’s wild.”
Many active drivers report the opposite issue: needing complete silence to sleep, sometimes using earplugs or soundproof curtains after years of engine noise.
The study concludes that while babies benefit from steady mechanical sounds, adults – especially truckers – often seek silence after prolonged exposure.
As one driver summed it up:
“Babies fall asleep to truck sounds. Truckers go to therapy because of them. That feels unfair.”
Trucker News will continue monitoring this developing bedtime phenomenon.
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