- BODY: For coal, power tipping
- CAPACITY: 6 tons
- FRAME: Channel steel
- TIRES: Wood blocks
- GENERATOR: Fire tube
- CYLINDERS: 2 compound, horizontal
- TRANSMISSION: Sliding gear
- SPEEDS: Two
- WHEEL-BASE: 130 inches
- TREAD: 66 inches
- DRIVE: Chain
Plymouth Bus, 30–40 H.P. Commercial Motor Truck Co., Plymouth, O.
(TOO LATE FOR PROPER CLASSIFICATION.)
- BODY: Rear entrance bus
- SEATS: 20–24 passengers
- WEIGHT: 4,500 pounds
- WHEEL-BASE: 144 inches
- TREAD: 56½ inches
- TIRES, FRONT: 32 in., single
- TIRES, REAR: 36 in., dual
- BRAKES: Internal expanding on rear wheel drums
- SPRINGS: Semi-elliptic
- FRAME: Braced channel steel
- BORE: 5 in.; STROKE: 5 in.
- CYLINDERS: 4 vertical in front
- COOLING: Water; honeycomb radiator
- IGNITION: Jump spark
- CURRENT SUPPLY: Storage battery
- CARBURETER: Automatic
- LUBRICATION: Automatic oiler
- MOTOR-CONTROL: Spark and throttle
- CHANGE GEAR: Duplex friction
- SPEEDS: 0 to 10 or 15 m. p. h.
- CHANGE-GEAR CONTROL: Side lever
- DRIVE: Chains to spur gear reduction
Plymouth Side Board Truck, 30–40 H.P. Commercial Motor Truck Co., Plymouth, O.
(TOO LATE FOR PROPER CLASSIFICATION.)