River locks have strict rules regarding who can enter, and also when they deserve to enter. Priority will constantly be given to advertisement vessels (unless you room a military craft), however regardless of who you are, you need to obey the website traffic lighting system; green, amber, and red. But which flashing light tells girlfriend to go into a flow lock?

A eco-friendly flashing light is the shade signal that you can go into a flow lock. Friend could likewise hear horn blasts. This are additionally a signal additionally to enter, yet only if the environment-friendly light is flashing in ~ the exact same time. Similar to traffic lights on the road, red way stop and also do no enter. Amber allows you start to approach safely.

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What execute all the shade lights average at a flow lock?

Please note, part river locks supplied fixed lights, others an ext commonly use flashing lights. But essentially, they median the same thing.


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Knowing what the various colors median is necessary for maintaining safe at flow locks.


Red resolved light

If the lights are resolved on red, and also NOT flashing, this means that the lock master isn’t aware of any boats or can not have actually noticed any.

Red flashing light

If the irradiate is flashing red, this speak you to save away indigenous the river lock and don’t effort to enter. You have to leave lots of room for the boats to exit prior to you deserve to start your entry on the signal of an amber light.

Amber light

The amber color means you deserve to start to method the river lock, however in a safe and controlled manner, proceeding with caution.

Amber and green light

If both colors space on in ~ the very same time, that means you deserve to proceed towards the river lock, yet under full regulate with no have to be as cautious.

Green flashing light

When the irradiate starts to flash green, that’s her signal to enter the river lock. You could likewise hear long blasts top top a horn i m sorry is one more signal to let girlfriend enter.

Exiting a river lock

The web traffic lighting system used above is the same for exiting the flow lock, however instead the a long horn blast, you will certainly hear a short one come exit.

Video display the wait because that the green light at a flow lock

In the video below you deserve to see footage of a boater entering a river lock ~ above the Murray River, wait for the light to go green.


The critical word…

This answer post was created due to need from users taking boat Ed tests and also Quizlets. It is because that informational objectives only and is created in stimulate to aid you with your revision and gain a better understanding of the object you need to discover about.

I don’t advocate taking any type of short cuts once it involves your marine and also boating education, as boat safety is miscellaneous that even the many experienced boaters should constantly be on height of.

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