Reported calendar year 2017 segments as surveyed in the 2018 NCFO.

Some segments are reported by more than one ferry operator.

Reported 2017 calendar year ferry vessels as surveyed in the 2018 NCFO

Reported 2017 calendar year ferry terminals as surveyed by the 2018 NCFO.

Some terminals are reported by more than one ferry operator.

This table shows the number and percent of people in the United States potentially exposed to different levels of noise from road sources.

This table shows the number and percent of people in the contiguous United States (excludes Alaska and Hawaii) potentially exposed to different levels of noise from combined aviation, road and passenger rail sources.

This table shows the number and percent of people in the contiguous United States (excludes Alaska and Hawaii) potentially exposed to different levels of noise from passenger rail sources.

This table shows the number and percent of people in the United States potentially exposed to different levels of noise from combined aviation and road sources.