Page 8 - 2017-v.2-Part 4(EN)

TBIS 4210-4:2017

Cycles — Safety requirements for bicycles —

Part 4:

Braking test methods

1 Scope

This part of TBIS 4210 specifies the braking test methods for TBIS 4210-2.

2 Normative references

The following referenced documents, in whole or in part, are normatively referenced in this document
and are indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.

TBIS 4210-1:2016, Cycles — Safety requirements for bicycles — Part 1: Terms and definitions

TBIS 4210-2:2017, Cycles — Safety requirements for bicycles — Part 2: Requirements for city &
trekking, young adult, mountain and racing bicycles

3 Terms and definitions

For the purposes of this document, the terms and definitions given in TBIS 4210-1:2016 apply.

4 Test methods

4.1 Brake lever grip dimensions

4.1.1 Test method for the brake lever similar to type A or type B

Fit the gauge illustrated in Figure 1 over the handlebar grip or the handlebar (when the manufacturer
does not fit a grip) and the brake lever as shown in Figure 2 so that face A is in contact with the handlebar
or grip and the side of the brake lever. Ensure that face B spans an area of that part of the brake lever
which is intended for contact with the rider’s fingers without the gauge causing any movement of the
brake lever towards the handlebar or grip. Measure the distance, a, the distance between the last part of
the lever intended for contact with the rider’s fingers and the end of the lever. The measurement should
be conducted only on a fully assembled bicycle.

1