Does Homeland Security have jurisdiction over highways?

Homeland Security does not have jurisdiction over highways in a general sense, which is why the answer is accurate. Jurisdiction over highways primarily lies with state and local law enforcement agencies. The role of the Department of Homeland Security (DHS) is more focused on protecting the nation from threats and managing emergencies rather than overseeing standard highway operations.

While DHS may have a presence or role in specific situations, particularly relating to national security and emergencies, it does not exercise overarching authority over highway systems routinely. Moreover, jurisdiction over highways does depend on the nature of the highway: local roads and state highways fall under the purview of local and state authorities, while federal highways are administered differently, often involving various levels of oversight but not directly under DHS's routine operations.

Though there are instances where federal law enforcement may be involved in highway safety related to national security or during emergencies, this does not equate to them having continuous jurisdiction. Thus, the statement that Homeland Security does not have jurisdiction over highways is correct.