Regulations & Health第 110 / 120 题
What blood alcohol concentration makes it unlawful for a CDL holder to operate a commercial motor vehicle?
a.0.08 or higher
b.0.04 or higher
c.0.10 or higher
d.0.02 or higher
解析
The commercial limit is 0.04, half the 0.08 limit that applies to most non-commercial drivers. A driver found at 0.04 or above, or with any detectable alcohol, is placed out of service for 24 hours.
法律依据: 49 CFR §392.5免费刷完整 120 道题库 — 无需注册。
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