Included are, e.g. power-assisted cycles.
12 18 04

Foot-propelled bicycles

(20 product series)
Pedal-propelled, two-wheeled cycles for one person.

12 18 06

Foot-propelled tricycles and quadricycles

(102 product series)
Cycles with three or more wheels for one propelling person, pedal propelled.

12 18 09

Hand-propelled tricycles and quadricycles

(7 product series)
Hand-propelled cycles with three or four wheels.

12 18 15

Tandems, tricycles and four-wheeled cycles for two or more persons

(29 product series)
Devices with two or more seats to allow riding for more than one person, pedal-propelled.

12 18 21

Cycle adaptations

(35 product series)
Additions or changes made to cycles to facilitate their operation.

12 18 24

Trailers for cycles

(2 product series)
Trailers to attach to cycles for carrying cargo.

12 18 81

Garages and covers for cycles

(1 product series)
Covers for protection of cycles that are not in use.

12 18 82

Trailer cycles

(1 product series)
Tag along cycles to be attached behind a cycle.