52Signals for use for opening bridges

#### 52 Signals for use for opening bridges 52 Signals for use for opening bridges > > (1) The **request acknowledged** signal to be displayed by a bridge operator to acknowledge a request to open the bridge for a vessel is as follows— > > > > > (a) between sunrise and sunset, a red semaphore arm, a red flag or a red light, > > > > > (b) between sunset and sunrise, a red light. > > > (2) The **bridge open** signal to be displayed by a bridge operator to indicate that the bridge is open for vessels to pass through is as follows— > > > > > (a) between sunrise and sunset, a green semaphore arm, a green flag or a green light, > > > > > (b) between sunset and sunrise, a green light.