NBN EN 14021 : 2004

Foreword
Introduction
1 Scope
2 Normative references
3 Definition
4 Requirements
  4.1 Construction
  4.2 Minimum protected areas
      4.2.1 General
      4.2.2 Breast guard
      4.2.3 Shoulder guards
      4.2.4 Biceps guards
      4.2.5 Back Guard
  4.3 Sizing
  4.4 Surface continuity
  4.5 Attachments
  4.6 Ergonomic requirements
  4.7 Impact performance requirements
5 Test equipment
  5.1 Apparatus
      5.1.1 Dropping apparatus
      5.1.2 Hemispherical impactor
      5.1.3 Anvil
      5.1.4 Force measurement instrumentation
      5.1.5 Tolerance and uncertainty
  5.2 Circular probe for surface continuity test
6 Test methods
  6.1 Samples for technical examination and ergonomic testing
  6.2 Visual check and measurement
  6.3 Testing the surface continuity of stone shields
  6.4 Testing restraints of stone shields
  6.5 Ergonomic assessment of stone shields
  6.6 Impact testing of stone shields
7 Marking
8 Information supplied by the manufacturer
Annex ZA (informative) Clauses of this European Standard addressing
         essential requirements or other provisions of EU Directives
Bibliography

Specifies requirements and test methods for the stone shields to be worn by youths and adults of either sex to provide limited protection against lofted stones and debris while riding motorcycles in motocross and other off-road activities on dirt roads.