Accurate understanding of traffic signs is integral to driving safety. Questionnaires and behavior tests are usually used to measure sign comprehension. However, biometric indicators have also been developed to measure sign comprehension. This study investigated neural indicators underlying traffic sign understanding by measuring event-related potentials (ERPs). A stimulus 1–stimulus 2 paradigm was adopted. A sign identification experiment was conducted independently in a laboratory setting with 60 participants divided into two groups. ERPs and brain topographies were analyzed to evaluate traffic sign comprehension. Misunderstanding was associated with greater amplitudes of the N300 and N400. The study demonstrates that the N300 and N400 are effective neural indicators for evaluating sign comprehension and can be used for predicting drivers’ sign comprehension and behavior.

中文翻译：

---

用事件相关电位测量和检查交通标志理解

准确理解交通标志是驾驶安全不可或缺的一部分。问卷和行为测试通常用于测量符号理解。然而，生物识别指标也已被开发用于测量符号理解。本研究通过测量事件相关电位 (ERP) 来调查交通标志理解背后的神经指标。采用了刺激 1-刺激 2 范式。标志识别实验在实验室环境中独立进行，60 名参与者分为两组。分析了 ERP 和大脑地形图以评估交通标志理解能力。误解与 N300 和 N400 的更大振幅有关。