264. アルコール・インターロック
アルコール・インターロック(alcolock)は、車両の始動系へ接続された呼気検査装置です。始動前に運転者が設定上限未満の呼気サンプルを提出する必要があります。走行中の追加検査を求めたり、検査、失敗、改ざんの可能性を記録したりする場合もあります。一部の国では飲酒運転違反者への安全措置や法的義務として使用されます。
What is an ignition interlock device?
An ignition interlock device is a breath-testing system connected to a vehicle that prevents the engine from starting when the driver’s alcohol concentration exceeds the programmed limit.
How does an ignition interlock work?
Before starting the vehicle, the driver provides a breath sample. If the alcohol concentration is below the permitted threshold, the vehicle can be started.
Can an ignition interlock require another test while driving?
Some systems require additional breath tests during a journey to confirm that the authorised driver remains compliant. The exact procedure depends on the device and applicable rules.
Does an ignition interlock record information?
Yes. Many systems can record breath-test results, failed attempts, events and possible attempts to interfere with the device.
Who may be required to use an ignition interlock?
Depending on the country, an ignition interlock may be required for drivers convicted of serious or repeated alcohol-related driving offences.
Can another person blow into an ignition interlock for the driver?
No. Having another person provide the breath sample defeats the purpose of the system and may be treated as tampering or non-compliance under the applicable rules.

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