4.0 Struck-By Hazards (Focus Four) OSHA 10 Practice Quiz

• A. A worker standing in the path of a backing dump truck
• B. Stand in the blind spot because the backup alarm is sounding
• C. Cut through active equipment routes to save time
• D. Work inside the swing radius without barricades or communication

Workers can be struck when they enter the travel path or blind spot of moving equipment. This is the correct answer.

• A. The counterweight or upper structure can swing and strike workers
• B. On the project, stand in the blind spot because the backup alarm is sounding
• C. On the project, cut through active equipment routes to save time
• D. On the project, work inside the swing radius without barricades or communication

Swing radius hazards can injure workers near rotating equipment. This is the correct answer.

• A. On site, cut through active equipment routes to save time
• B. Operators may not see workers who are close to or behind equipment
• C. On site, work inside the swing radius without barricades or communication
• D. Assume an operator sees every worker nearby

Blind spots create a serious struck-by exposure around mobile equipment. This is the correct answer.

• A. At the worksite, cut through active equipment routes to save time
• B. Workers walking through an active vehicle route without traffic controls
• C. At the worksite, work inside the swing radius without barricades or communication
• D. On the project, assume an operator sees every worker nearby

Uncontrolled pedestrian exposure to vehicle routes creates struck-by risk. This is the correct answer.

• A. In this case, cut through active equipment routes to save time
• B. On site, operators may not see workers who are close to or behind equipment
• C. In this case, work inside the swing radius without barricades or communication
• D. During work, assume an operator sees every worker nearby

Blind spots create a serious struck-by exposure around mobile equipment. This is the correct answer.

• A. During the shift, work inside the swing radius without barricades or communication
• B. On site, assume an operator sees every worker nearby
• C. Make eye contact or otherwise confirm the operator knows the worker is there and follow site procedures
• D. On site, stand in the blind spot because the backup alarm is sounding

Awareness and communication help prevent workers from entering equipment danger zones. This is the correct answer.

• A. In the field, work inside the swing radius without barricades or communication
• B. At the worksite, assume an operator sees every worker nearby
• C. Use spotters, alarms, or other site controls when visibility is limited
• D. At the worksite, stand in the blind spot because the backup alarm is sounding

Backing operations need controls because drivers may not see workers behind them. This is the correct answer.

• A. During the shift, assume an operator sees every worker nearby
• B. During the shift, stand in the blind spot because the backup alarm is sounding
• C. During the shift, cut through active equipment routes to save time
• D. Stay outside marked travel paths and equipment swing areas

Separation from moving equipment reduces the chance of being struck. This is the correct answer.