| Wheel Type | Pneumatic Rubber Wheels | Air-filled tires with flexible sidewalls; commonly used in larger diameters to cross uneven outdoor surfaces. | Good shock absorption, improved flotation on loose ground, and better comfort over gravel or compacted soil. | Can puncture; air pressure must be checked regularly. Low pressure increases rolling resistance and may reduce stability. | Gravel yards, farms, construction areas, landscaping sites, and moderately uneven outdoor ground. |
| Solid Rubber Wheels | Non-pneumatic rubber tires designed to resist punctures while retaining more cushioning than hard plastic wheels. | Puncture resistance, predictable maintenance, and useful grip on mixed indoor and outdoor surfaces. | Heavier steering effort than pneumatic tires; less shock absorption; may leave marks on some finished floors. | Mixed-use facilities where punctures are a concern and the truck must travel between paved floors and outdoor work areas. |
| Foam-Filled Tires | Pneumatic-style tires filled with resilient foam instead of air. | Combines puncture resistance with more cushioning than many solid tires; maintains a consistent tire profile. | Usually heavier and more expensive than standard pneumatic tires; ride comfort can be lower than air-filled tires. | Sites with sharp debris, nails, or branches where reduced downtime is more important than minimum tire cost. |
| Polyurethane or Hard Polymer Wheels | Hard, low-deflection wheels commonly used on smooth, firm, and clean surfaces. | Low rolling resistance, long service life on suitable floors, and good resistance to oils and many chemicals. | Limited shock absorption and reduced traction on loose gravel, mud, wet grass, or deeply uneven ground. | Smooth concrete, loading docks, warehouses, and short transitions between paved surfaces. |
| Traction System | Manual Push/Pull | Operator supplies all travel force through the tiller or handle; no traction battery or drive motor. | Simple construction, low purchase cost, low service complexity, and no battery charging requirement. | Physical effort increases with load, slope, wheel resistance, and uneven ground. Not suitable for frequent long-distance movement of heavy loads. | Short travel distances, light to moderate loads, level surfaces, and occasional outdoor handling. |
| Powered Walk-Behind Drive | An electric drive motor propels the truck while the operator walks behind and controls travel from the tiller. | Reduces pushing effort, provides controlled acceleration, and is practical for repeated movement of heavier loads. | Requires battery charging and periodic electrical, brake, and drive-system maintenance. | Longer travel routes, moderate slopes, repeated loading cycles, and mixed indoor/outdoor applications. |
| Powered Drive with Hill-Hold or Regenerative Braking | Electric drive with electronic speed control, controlled deceleration, and braking assistance when releasing the travel control. | Improves control on ramps, limits unintended rollback, and can reduce mechanical brake wear. | More electronic components and greater dependence on battery condition and system calibration. | Facilities with ramps, frequent stopping and starting, or loads that require smooth speed management. |
| Four-Wheel or Multi-Wheel Traction | Drive and support wheels are arranged to maintain contact over uneven terrain; some designs use articulated or oscillating components. | Better stability and traction distribution when crossing ruts, thresholds, or irregular ground. | Higher cost, greater machine weight, and potentially a larger turning radius than simpler layouts. | Frequent outdoor work on uneven surfaces where maintaining wheel contact is more important than compact maneuverability. |
| Operator Controls | Mechanical Tiller Handle | Steering, lifting, and lowering functions are operated through direct mechanical controls. | Easy to understand, durable, and less dependent on electronic sensors or software. | Can require more operator effort and may offer fewer speed-control features than powered electronic controls. | Simple handling tasks, low-use environments, and applications where straightforward serviceability is a priority. |
| Ergonomic Powered Tiller | Tiller-mounted buttons or paddles control travel, lifting, lowering, braking, and sometimes horn or speed selection. | Reduces repetitive effort and keeps key functions within the operator’s hand position. | Controls must be protected from impact, moisture, and contamination; operators need basic familiarization. | Frequent handling cycles, heavier loads, and operations requiring precise low-speed maneuvering. |
| Adjustable Speed and Direction Control | Variable travel control allows gradual acceleration, speed reduction, and forward or reverse selection. | Supports safer positioning near people, racks, trailers, and uneven edges while reducing wheel spin. | Incorrect settings or abrupt control inputs can still cause load movement or loss of traction. | Busy yards, congested loading zones, ramps, and work areas with changing surface conditions. |
| Emergency-Reverse and Dead-Man Controls | A presence-control switch stops or limits travel when released; an emergency-reverse feature helps prevent trapping against an obstacle. | Provides an additional layer of operator protection during walk-behind operation. | These features do not replace training, route control, visibility checks, or site-specific safety procedures. | Any powered walk-behind application, especially areas with limited clearance or frequent changes in direction. |
| Selection Priority | Choose the wheel type according to surface condition and puncture risk; choose powered traction according to load frequency, travel distance, and slope; choose operator controls according to maneuvering precision, visibility, and ergonomic requirements. |