Tractor-trailers parked on the shoulders of major highways have become a common sight for regular commuters across Pennsylvania and beyond.
Legal experts warn that this so-called “sitting duck” parking practice creates a serious and often underappreciated safety hazard for passing motorists on busy roads.
Federal data from the Federal Motor Carrier Safety Administration reveals there were over 200 fatal crashes involving parked or working large trucks between 2018 and 2020.
Those fatalities represent roughly 4 to 5 percent of all fatal large truck crashes recorded across the United States during that same period.
An FMCSA study of fatal parked-truck crashes determined that 68% of these crashes occurred on the shoulder of the road, pointing to a clear and consistent danger zone.
The same study found that 55% of these crashes occurred between 1:00 am and 8:00 am, when approaching drivers are most fatigued and least alert to stationary hazards.
It might initially seem as though the approaching driver bears fault for failing to spot a large, parked truck, but the reality is far more complicated and troubling.
Drivers who strike conspicuous stopped vehicles routinely report never seeing them, despite markings and flashing lights, a pattern attributed to driver fatigue, target fixation, and difficulties in perceiving the stopped truck.
There is currently no federal regulation explicitly prohibiting “sitting duck” parking on highways, leaving a significant gap in road safety protections for ordinary motorists.
Federal rules under 49 CFR Section 392.22 do require drivers forced into emergency shoulder stops to deploy hazard flashers, reflective triangles, and flares to alert approaching traffic to their location.
Pennsylvania law goes further, explicitly prohibiting non-disabled trucks from standing or parking on a limited access highway unless authorised by official traffic-control devices, under 75 Pa. C.S. Section 3353(a)(2)(vii).
In practice, this means Pennsylvania truck drivers are not permitted to park in a “sitting duck” position unless their vehicle is truly disabled, it is necessary to avoid a crash, or they are directed to do so by a traffic-control device or law enforcement.
Even when one of those emergency conditions applies, drivers must still comply with both federal and state emergency response rules covering warning devices and visibility measures.
It is never permissible for a truck driver to park in a “sitting duck” position for non-emergency reasons such as rest or sleep, according to the relevant legal framework governing commercial vehicle operators.
Truck drivers are instead expected to use designated truck stops and rest areas, which are widely available along Pennsylvania’s major highway corridors, including the PA Turnpike.