Forklift Safety & Operation

Powered industrial trucks (commonly called forklifts) are among the most useful and most dangerous pieces of equipment in any warehouse, manufacturing facility, or construction site. According to OSHA, approximately 85 workers are killed and 34,900 are seriously injured in forklift-related incidents each year in the United States. Nearly all of these incidents are preventable through proper training, daily inspections, correct operating procedures, and constant situational awareness. OSHA Standard 1910.178 governs the operation of powered industrial trucks, and compliance is non-negotiable. This guide covers everything you need to know to operate a forklift safely and competently on your first day.

Types of Powered Industrial Trucks

OSHA classifies powered industrial trucks into seven classes based on their power source and design:

• Class I - Electric motor rider trucks. Counterbalanced sit-down forklifts powered by electric batteries. Used indoors due to zero emissions. Capacity: 3,000 to 12,000 pounds typical.
• Class II - Electric motor narrow aisle trucks. Includes reach trucks, order pickers, and turret trucks. Designed for narrow warehouse aisles. Capacity: 2,500 to 5,500 pounds typical.
• Class III - Electric motor hand trucks or hand/rider trucks. Includes pallet jacks (walkie), walkie riders, and walkie stackers. Capacity: 4,000 to 6,000 pounds typical.
• Class IV - Internal combustion engine trucks with solid (cushion) tires. Used indoors on smooth floors. Common in manufacturing. Propane (LP gas) or gasoline powered.
• Class V - Internal combustion engine trucks with pneumatic tires. Used indoors and outdoors on rough surfaces. Propane, gasoline, or diesel powered. The most versatile forklift type.
• Class VI - Electric and internal combustion engine tractors. For towing trailers and carts.
• Class VII - Rough terrain forklift trucks. Designed for outdoor use on unimproved surfaces (construction sites, lumber yards). Large pneumatic tires, high ground clearance. Diesel or propane powered.

Choosing the Right Forklift

• Indoor only, smooth floor: Class I (electric counterbalanced) or Class IV (IC cushion tire). Electric preferred for indoor air quality.
• Indoor and outdoor: Class V (IC pneumatic) or Class I if outdoor travel is on pavement.
• Narrow aisles (under 10 feet): Class II (reach truck or order picker).
• Pallet-only work, short distances: Class III (electric pallet jack).
• Rough outdoor terrain: Class VII (rough terrain forklift).

OSHA Training Requirements

OSHA 1910.178(l) requires that every forklift operator receive training before operating a powered industrial truck. Training must include:

Formal Instruction

Classroom or online training covering:

• Operating instructions, warnings, and precautions specific to the forklift type
• Differences between the forklift and an automobile
• Operating environment considerations (surface conditions, pedestrians, other traffic)
• Loading and stability principles
• Vehicle inspection and maintenance

Practical Training

Hands-on exercises under the supervision of a qualified trainer:

• Pre-trip inspection
• Starting, stopping, and turning
• Loading, unloading, and stacking
• Traveling on grades and ramps
• Refueling or charging

Evaluation

The trainer must evaluate the operator in the actual workplace to confirm competence.

Refresher Training

Required when:

• The operator is observed operating unsafely
• The operator is involved in an accident or near-miss
• The operator is assigned a different type of forklift
• Workplace conditions change (new racking, new traffic patterns)
• At least every three years, regardless of other triggers

Important: A forklift operator certification from one employer does not automatically transfer to another employer. Each employer must evaluate and, if necessary, provide additional training specific to their workplace.

Pre-Operation Inspection

OSHA requires operators to inspect the forklift before each shift. This is a critical safety step that should never be skipped.

External Walk-Around

Walk around the entire forklift and check:

Tires and wheels:

• Pneumatic tires: check for cuts, gouges, embedded objects, and proper inflation (check pressure with a gauge; typical range 90-120 PSI depending on tire size).
• Cushion (solid) tires: check for chunking (pieces missing), flat spots, and excessive wear. Replace when worn to the wear line.
• Lug nuts: check for loose or missing lug nuts.

Forks:

• Check for cracks, especially at the heel (the bend). Cracks here mean the fork must be replaced immediately.
• Check for bending or twisting. Forks must be straight and parallel.
• Check fork tips for uneven wear. Fork tips should be the same height when level.
• Check fork pins or latches (fork locking mechanism) for secure engagement.

Mast and carriage:

• Check mast channels for damage, debris, and lubrication.
• Check lift chains for wear, stretch, and proper adjustment. Chains should have equal tension; a loose chain can cause the carriage to tilt.
• Check chain anchor pins and retaining clips.
• Check hydraulic cylinders and hoses for leaks.

General:

• Check for fluid leaks under the forklift (oil, coolant, hydraulic fluid, fuel).
• Verify the data plate is readable and attached.
• Check the overhead guard for damage.
• Verify the fire extinguisher is present and charged (if required by your facility).

Operator Compartment Checks

Sit in the operator's seat and check:

• Seatbelt - Fasten it. Verify it latches and retracts properly.
• Seat adjustment - Adjust for proper reach to controls and pedals.
• Mirrors - Adjust for maximum rear visibility.
• Controls - Identify and test all controls: lift, tilt, side-shift (if equipped), attachment controls.
• Horn - Must work. It is your primary warning device.
• Lights - Headlights, tail lights, and strobe/warning lights must all function.
• Backup alarm - Must sound when the forklift is in reverse.
• Brakes - Test service brakes (should stop the forklift smoothly). Test parking brake (should hold on a slight incline).
• Steering - Check for excessive play or hard spots.

Fluid Checks (IC Forklifts)

• Engine oil level (check with dipstick)
• Coolant level (check overflow reservoir; never open a hot radiator cap)
• Hydraulic fluid level
• Fuel level (LP tank gauge, fuel gauge, or dipstick)

Battery Checks (Electric Forklifts)

• Battery charge level (should be above 20% before starting a shift; batteries should never be run below 20%)
• Electrolyte level (should cover the plates; add distilled water only, never acid)
• Battery connector and cables (tight, no corrosion)
• Battery restraint (brackets or hold-downs securing the battery)

If any inspection item fails, tag the forklift out of service and report to your supervisor. Do not operate a defective forklift.

Stability and the Stability Triangle

Understanding forklift stability is essential for preventing tip-overs, which are the leading cause of forklift fatalities.

How a Forklift Balances

A forklift is a lever. The front axle is the fulcrum. The counterweight at the rear balances the load on the forks in front. When the load is too heavy, too high, or too far forward, the forklift tips forward over the front axle.

The Stability Triangle

A forklift has three support points:

• The two front wheels (or the ends of the front axle on solid-axle forklifts)
• The center of the rear axle (the rear axle pivots for steering)

These three points form a triangle. As long as the combined center of gravity (forklift + load) stays inside this triangle, the forklift is stable. If the center of gravity moves outside the triangle, the forklift tips over.

Factors That Reduce Stability

• Overloading - Exceeding the rated capacity shifts the center of gravity forward.
• Raised load - Raising the load raises the center of gravity, making the forklift more prone to tipping (especially lateral tip-over during turns).
• Forward tilt - Tilting the mast forward shifts the load's center of gravity further from the fulcrum.
• Speed and turning - Centrifugal force during turns pushes the center of gravity to the outside of the turn. This is the primary cause of lateral tip-overs.
• Uneven surfaces - Bumps, potholes, dock plates, and ramps can shift the center of gravity suddenly.
• Off-center loads - A load positioned to one side of the forks shifts the center of gravity laterally.

The Data Plate

Every forklift has a data plate (capacity plate) mounted on the dashboard or mast. It specifies:

• Rated capacity - The maximum load weight at a specified load center (typically 24 inches for a standard forklift).
• Load center - The distance from the face of the forks to the center of gravity of the load. If your load's center of gravity is farther from the forks than the rated load center, the actual capacity is reduced.
• Maximum fork height - Capacity may decrease at full mast height.
• Attachment deductions - If attachments (clamps, rotators, side-shifters) are installed, the effective capacity is reduced. The data plate should reflect this.

Critical rule: Never exceed the rated capacity on the data plate. If you are unsure about a load's weight, weigh it, look at the shipping label, or ask your supervisor.

Safe Traveling Procedures

Speed

• Observe posted speed limits. Most facilities limit forklift speed to 5-8 MPH.
• Travel at a speed that allows you to stop safely. Consider floor conditions (wet, oily, dusty), traffic, visibility, and load.
• Slow down for turns, intersections, blind corners, doorways, and ramps.

Forks and Load Position While Traveling

• Travel with forks 4 to 6 inches off the ground. This provides ground clearance while keeping the center of gravity low.
• Tilt the mast fully back when carrying a load. This secures the load against the backrest and lowers the center of gravity.
• Travel in reverse when the load blocks your forward vision. Look in the direction of travel.

Intersections and Blind Spots

• Sound your horn at every intersection, blind corner, and doorway.
• Stop and look both ways before proceeding through intersections.
• Use mirrors (convex mirrors mounted on walls) at blind corners.
• Yield to pedestrians. Always.

Ramps and Inclines

• Loaded, going up a ramp - Drive forward (load uphill).
• Loaded, going down a ramp - Drive in reverse (load uphill).
• Unloaded - Drive with forks downhill in both directions for best steering control.
• Never turn on a ramp. Drive straight up and straight down.
• Keep the load tilted back and low on ramps.
• Maximum recommended grade for most forklifts: 10% (about 6 degrees).

Other Travel Rules

• Keep a minimum following distance of three forklift lengths behind other forklifts.
• Never pass another forklift traveling in the same direction at an intersection or blind spot.
• Do not drive over objects on the floor (wood scraps, broken pallets, banding). Stop and remove them first.
• Stay clear of dock edges. If there is no trailer at the dock, the dock door should be closed, or a dock barrier should be in place.
• Never carry passengers. No exceptions.
• Never drive with arms or legs outside the operator compartment.

Loading and Stacking

Picking Up a Load

1. Approach the load squarely, not at an angle. Center the forks under the load.
2. Stop approximately 12 inches from the load.
3. Level the forks and set the mast to vertical.
4. Drive forward slowly until the forks are fully under the load. The load should rest against the fork backrest extension.
5. Lift the load just enough to clear the surface below it (2-4 inches).
6. Tilt the mast back to secure the load.
7. Back out carefully and lower the load to traveling height (4-6 inches).

Placing a Load on a Rack

1. Approach the rack squarely. Stop when the forks are 12 inches from the rack face.
2. Level the forks and set the mast to vertical.
3. Raise the load to the rack level (2-3 inches above the beams).
4. Drive forward until the load is directly over the rack beams.
5. Lower the load onto the beams slowly.
6. Tilt the forks forward slightly to disengage from the pallet.
7. Back out slowly, checking that the load is centered and stable on the rack.
8. Lower the forks to traveling height.

Stacking and Unstacking

• Always place loads squarely on the pallet and rack.
• Do not stack loads higher than the maximum stacking height for the product.
• Verify that the rack or floor surface can support the weight of stacked loads.
• When unstacking, take the top load first. Never try to pull a load from the middle or bottom of a stack.

Refueling and Recharging

Propane (LP Gas) Forklifts

• Change LP tanks in a designated area with proper ventilation. Never change a tank near an ignition source.
• Inspect the tank and coupling for damage before installing.
• Hand-tighten the coupling. Do not use tools (over-tightening damages the seal).
• Check for leaks after connecting (listen for hissing, use a leak detection solution). If a leak is detected, close the tank valve, disconnect, and report to your supervisor.
• Store spare LP tanks upright in an approved outdoor or ventilated storage area.

Electric Forklift Battery Charging

• Charge batteries only in a designated charging area with proper ventilation. Hydrogen gas is produced during charging and is explosive.
• No smoking, open flames, or sparking tools in the charging area.
• Wear splash-resistant safety glasses and acid-resistant gloves when handling batteries.
• Charge the battery when it reaches 20% charge. Do not opportunity-charge (short charges during breaks) unless the battery is designed for it. Opportunity charging shortens conventional battery life.
• Check electrolyte levels after charging (when the battery has cooled). Add distilled water if needed. Never add acid.
• Allow the battery to cool before returning the forklift to service. A hot battery has a shorter life.

Working Around Pedestrians

Pedestrian/forklift interaction is one of the most dangerous situations in any facility:

• Pedestrians always have the right of way. Stop and wait for them to clear your path.
• Never assume a pedestrian can see or hear you. Sound the horn. Make eye contact. Wait for acknowledgment.
• Maintain a minimum 4-foot clearance between the forklift and pedestrians when passing.
• In narrow aisles where 4-foot clearance is not possible, stop and wait for the pedestrian to exit the aisle.
• Never allow anyone to walk under raised forks, whether loaded or unloaded.
• Never use the forks to lift a person unless an OSHA-compliant work platform is properly secured to the forks and the person is on the platform.
• If a pedestrian enters your travel path, stop immediately. Do not try to go around them.
• Facilities should establish separate pedestrian walkways marked with painted lines, signs, and physical barriers where possible.

What to Do in a Tip-Over

If the forklift begins to tip over:

1. Do not jump. Jumping out puts you in the path of the falling forklift. Workers who jump are frequently crushed by the overhead guard.
2. Stay in the seat. Keep your seatbelt fastened.
3. Grip the steering wheel firmly.
4. Brace your feet on the floor.
5. Lean away from the direction of the fall. If the forklift tips to the right, lean left.

The overhead guard is designed to protect you if you stay inside. It is your best protection.

Key Takeaways

• Complete a thorough pre-trip inspection every shift. Tag out any defective forklift.
• Never exceed the rated capacity on the data plate. Account for load center distance and attachment deductions.
• Travel with forks low (4-6 inches), mast tilted back, at a safe speed.
• Sound the horn at every intersection and yield to pedestrians. Always.
• In a tip-over, stay in the seat with your seatbelt fastened. Do not jump.
• Forklift certification must be renewed every three years and after any incident, observed unsafe behavior, or workplace change.
• The forklift is a tool, not a toy. Treat it with the same respect you would give any piece of heavy equipment.