Final answer:
The subject of this question is Social Studies. The dashed bike lane stripe is a road sign that falls under the category of traffic regulations and transportation infrastructure.
Step-by-step explanation:
The subject of this question is Social Studies. In the context of the question, the dashed bike lane stripe is a road sign that falls under the category of traffic regulations and transportation infrastructure, which are typically studied in Social Studies. It is important to understand this sign in order to promote road safety and ensure smooth interactions between motorists and bicyclists.