Construction safety
Construction hazards: moving vehicles and struck-by objects
Vehicles, falling materials and released pressure can injure people in different ways. Control the movement, the energy and access to the danger zone.
Construction hazards series. These articles cover OSHA’s four construction Focus Four categories plus respirable crystalline silica. They are five major hazards, not a universal statistical ranking. Statistics are labelled by year and scope; US requirements are identified as OSHA requirements.
A reversing truck is an obvious moving hazard. A tool dropped from above or a component released by stored pressure can also strike a worker. OSHA groups struck-by hazards around forceful contact with moving objects, including flying, falling, swinging and rolling objects. [1] [2]
What is the hazard, and how can it harm people?
On construction sites, struck-by exposure can arise from mobile plant, lifting operations, overhead work, power tools and unstable materials. OSHA describes injuries ranging from abrasions to concussion, blindness and death for flying or falling objects. Its vehicle examples also show fatal crushing and impact. [1]
Classification needs care. OSHA distinguishes a struck-by event from a caught-in/between event according to how the injury occurs: impact by an object differs from being squeezed or crushed between objects. The same equipment can create both types of exposure. [2]
What do the statistics show?
The reproduced dataset totals 54 deaths across all listed crane-related causes. It records six deaths under “struck by crane load” and six under “struck by other crane parts”. These are historical, narrowly scoped figures. They are not a current total for all construction struck-by fatalities, and the dataset should not be used to rank today’s hazards. [2]
Selected OSHA requirements: vehicles and crane zones
The following US federal construction rules have defined scopes. The vehicle rule below is not a substitute for the separate rules applying to earthmoving equipment or public-road traffic.
| Situation | Requirement and scope | OSHA reference |
|---|---|---|
| Reversing with an obstructed rear view | For motor vehicles covered by this section, use a reverse alarm audible above surrounding noise or back up only when an observer signals that it is safe. Section 1926.601 covers off-highway jobsites not open to public traffic and excludes equipment covered by 1926.602. | 1926.601(a), (b)(4) [7] |
| Crane swing and crush zones | Train assigned personnel to recognise the hazard areas and erect/maintain control lines, warning lines, railings or similar barriers. Where barriers are demonstrably infeasible, the stated signs, equipment-marking and training alternative applies. | 1926.1424(a)(1)–(2) [8] |
| Entry out of the crane operator’s view | Before entering the covered hazard location, ensure the operator is informed. When the operator knows a worker entered, the superstructure must not rotate until the prescribed safe-position confirmation is received. | 1926.1424(a)(3) [8] |
| Parked equipment and raised attachments | Specified blades, buckets, dump bodies and similar equipment must be fully lowered or blocked when not in use or under repair. Parking and equipment-control provisions also apply. | 1926.600(a)(3) [6] |
Conditions that increase risk—and why
| Risk factor | How it changes the danger |
|---|---|
| Blind areas and mixed pedestrian/vehicle routes | An operator may not see someone entering the travel path or swing zone. Physical separation, access control and appropriate reversing safeguards address that exposure. [1] [7] [8] |
| Noise or poor visibility | A warning that cannot be heard, or a worker who cannot be seen, weakens the intended warning arrangement. OSHA specifies audibility above surrounding noise and suitable lighting when visibility warrants it for covered vehicles. [7] |
| Unsecured materials and overhead work | Materials can slide, fall or be released into occupied space. OSHA’s eTool calls for secure storage, falling-object protection and keeping people away from moving loads. [1] |
| Unexpected rotation or entry without communication | A person can enter a crane’s pinch/crush area while the operator believes it is clear. The work-area rule directly addresses notification and confirmation before rotation. [8] |
| Stored pressure mistaken for a depressurised system | Removing an end cap can release a component into the worker’s position. OSHA’s Hyvac finding specifically concerned failure to verify the absence of stored pressure. [4] |
Choose controls in hierarchy order
The following is Sentivo’s hierarchy-based organisation of OSHA guidance. Examples must be checked against the actual vehicle, operation and site conditions. [1] [3]
- Elimination: remove people from the path of moving loads and equipment. OSHA advises avoiding work beneath loads being moved. Its controls for overhead work also include keeping people out of the affected area. [1]
- Substitution: during planning, assess whether a safer equipment or process option can reduce hazardous movement. OSHA’s general guidance supports inherently safer design and equipment selection; it does not prescribe one universally safer vehicle for every site. Evaluate any new hazards created by the replacement. [3]
- Engineering controls: use barriers and appropriate exclusion arrangements; secure tools and materials; provide toeboards, screens, nets or other suitable falling-object protection. Maintain equipment, guards and lifting components. OSHA also requires specified blades, buckets and similar equipment to be fully lowered or blocked when not in use. The correct measures depend on the work being performed. [1] [2] [6]
- Administrative controls: plan vehicle and lifting movements, restrict entry, inspect equipment, observe capacities and train operators and affected workers. For work involving stored pressure, verify that the system is free from pressure before opening it; the Hyvac case demonstrates that specific failure. [1] [4]
- PPE: select head and eye protection for the exposure. OSHA recommends hard hats for falling-object exposure and appropriate eye or face protection for flying particles. PPE is additional protection; it does not make standing under a suspended load acceptable. [1]
Two documented real accidents
1. A concrete-cutting worker struck by a truck
OSHA’s eTool describes a worker cutting concrete on a four-lane highway. A semi-tractor and trailer, reported to be exceeding the speed limit, hit a guardrail, passed through the barrels and struck the worker from behind, killing him. OSHA gives no date or employer name in this summary; neither is inferred here. [1]
2. Hyvac Inc. — stored pressure during mall-expansion work
OSHA reported that a pipefitter installing air-conditioning for a Florida mall expansion was fatally injured by a pressurised HVAC piping system on 28 August 2025. OSHA cited two serious violations relating to checking stored pressure and training for end-cap removal, with $28,135 in proposed penalties. This was a struck-by event involving stored energy, not a vehicle collision. [4]
Case summaries describe what OSHA reported at publication. Proposed penalties and contested citations are not final court findings; subsequent case status has not been verified. Images are conceptual illustrations, not photographs of these events.
A useful site-review question
For every moving vehicle, load or potentially released component, ask where the energy can travel and how people are kept outside that path. Sentivo proposes using this question alongside OSHA’s requirement to implement controls and verify that they remain effective. [3]
Sources
References were checked on 31 October 2026. Numbered links connect factual claims to these sources. Examples, checklists and proposed applications identified as Sentivo’s are editorial recommendations; they are not quoted requirements or claims of proven results.
- OSHA. Construction eTool — Struck-By. (opens in a new tab)Vehicle and falling-object hazards, injuries, controls and anonymised fatal road-work accident.
- OSHA. Construction Focus Four: Struck-By Hazards, Instructor Guide, April 2011, pp. 3–6 and control sections. (opens in a new tab)Struck-by definition, categories, historical 2008 crane-related dataset and equipment controls.
- OSHA. Hazard Prevention and Control. (opens in a new tab)Elimination, substitution, engineering, administrative and PPE priorities; design and verification.
- OSHA. Florida air-conditioning contractor cited after worker fatality. (opens in a new tab)Hyvac pipefitter fatality on 28 August 2025, stored pressure, two serious citations, proposed $28,135.
- OSHA. Construction Focus Four Training. (opens in a new tab)Scope of the four construction hazard categories.
- OSHA. 29 CFR 1926.600 — Equipment, general requirements. (opens in a new tab)Lowering or blocking specified equipment when not in use; parking arrangements. Used in the image review.
- OSHA. 29 CFR 1926.601 — Motor vehicles. (opens in a new tab)Off-highway vehicle coverage; obstructed rear view, reversing safeguards, brakes, lighting and securing transported materials.
- OSHA. 29 CFR 1926.1424 — Work area control. (opens in a new tab)Crane rotating-superstructure hazard zones, barriers, training and operator communication.