[KongchangAI]
Unverified85% confidenceDecision RuleTime unknown

夜间骑行安全应选择符合 EN ISO 20471 二级或三级认证的背心,反光条总面积二级需≥0.13㎡、三级≥0.20㎡,普通街用装饰性反光背心不达此标准

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