Intersection defined as where roads cross and as the common point in geometry and set theory, guiding legal usage. Intersection denotes the point or area where two or more lines, planes or routes cross. In street and highway contexts it signifies the space occupied where streets cross, including the common area formed by continuing curb lines. In geometric and mathematical contexts it denotes the common point or line of intersecting lines or surfaces, and in set theory the common elements of two or more sets. Dictionaries and legal lexicons record these multiple senses, requiring usage to follow the functional meaning relevant to the legal or practical context.