SUBPART A—General Requirements (§117.1 to §117.49)
- 117.1—Purpose.
- 117.4—Definitions.
- 117.5—When the drawbridge must open.
- 117.7—General requirements of drawbridge owners.
- 117.8—Permanent changes to drawbridge operation.
- 117.9—Delaying opening of a draw.
- 117.11—Unnecessary opening of the draw.
- 117.15—Signals.
- 117.17—Signalling for contiguous drawbridges.
- 117.19—Signalling when two or more vessels are approaching a drawbridge.
- 117.21—Signalling for an opened drawbridge.
- 117.23—Installation of radiotelephones.
- 117.24—Radiotelephone installation identification.
- 117.31—Drawbridge operations for emergency vehicles and emergency vessels.
- 117.33—Closure of draw for natural disasters or civil disorders.
- 117.35—Temporary change to a drawbridge operating schedule.
- 117.36—Closure of drawbridge for emergency repair.
- 117.39—Authorized closure of drawbridge due to infrequent requests for openings.
- 117.40—Advance notice for drawbridge opening.
- 117.41—Maintaining drawbridges in the fully open position.
- 117.42—Remotely operated and automated drawbridges.
- 117.47—Clearance gauges.
- 117.49—Process of violations.