Page 13 - TBIS_79010-2019_(EN)_1nd
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TBIS 79010:2019
4.1.3.2 Minimum failure torque
The minimum failure torque of bolted joints for the fastening of handle bars,
handlebar-stems, bar-ends, saddle and seat-posts shall be at least 50 % greater than
the manufacturer's recommended tightening torque.
4.1.3.3 Folding bicycles mechanism
Folding bicycle mechanism; if provided shall be designed so that CARGO BIKE can be
locked for use in a simple, stable, safe way and when folded no damage shall occur
to any cables. No locking mechanism shall contact the wheels or tyres during riding,
and it shall be impossible to unintentionally loosen or unlock the folding mechanisms
during riding.
4.1.4 Protrusions
These requirements are intended to address the hazards associated with the users of
CARGO BIKE falling on projections or rigid components (e.g. handlebars, levers) on
CARGO BIKE possibly causing internal injury or skin puncture. Tubes and rigid
components in the form of projections which constitute a puncture hazard to the
rider should be protected. The size and shape of the end protection has not been
stipulated, but an adequate shape shall be given to avoid puncturing of the body.
Screw threads which constitute a puncture hazard shall be limited to a protrusion
length of one major diameter of the screw beyond the internally threaded mating
part.
NOTE Handlebar-ends are covered by the paragraph in 4.3.6.2.
4.2 Brakes
4.2.1 Braking-systems
CARGO BIKE shall be equipped with at least two independently actuated
braking-systems. At least one shall operate on the front wheel and one on the rear
wheel. The braking-systems shall operate without binding and shall be capable of
meeting the braking-performance requirements of 4.2.2.9.
No hand shall need to be taken from the handlebar to operate the brake levers.
If additional braking-systems are implemented, they shall meet the brake
requirements of 4.2.1.
Brake-blocks containing asbestos shall not be permitted.
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