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Traffic-light signalling and operation - Wikipedia


The use of traffic lights to control the movement of traffic differs regionally and internationally in .... At many intersections, lights will change from red to a green arrow permitting drivers to ...

What does a red and green light indicate when seen together at night


Sail boat is coming at you.

In Any Type of Vessel—If You See Only a Green Light or Only a Red


Encountering a Sailing Vessel at Night. When you see only a green light or only a red light, you may be approaching a sailing vessel and you must give way.

Boat Navigation at Night BOATsmart! Knowledgebase


Everything you need to know about boat navigation at night, includes ... If you meet a vessel and see a green and red light but no masthead (white) light, ... If you see a white light on its own it indicates that you DO NOT have the right-of- way.

Can You Be Seen? - Check Your Navigation Lights - BoatSafe.com


Operating at night (or in reduced visibility) can present some special ... or worse yet bifocals, you simply don't see as well at night as you do during the ... If you don't see the green starboard sidelight or the red port sidelight when the stern light ...

www.ask.com/youtube?q=What Does a Red and Green Light Indicate When Seen Together at Night?&v=NosFyyPDURg
Nov 17, 2011 ... About once or twice a week I've been seeing a flashing light which most ... 2 nights I have seen multiple red and green flashing lights in the sky.

Navigation lights; Learn how to identify different kinds of boats at night.


Notice in the above illustration if you put all three lights together they would form a ... combined together into one unit (but still show red and green appropriately) if the ... Because it must be seen from all around it needs to be at the top of the mast. ... With the engine on we turn on the masthead light to indicate we are under ...

Navigational Lights and Signals


Feb 11, 2000 ... GWPDA Maritime War Section - (British) Navigational Lights and ... Two lanterns, showing coloured lights (red and green), to be carried ... A Black Ball at the foremast head and a similar Ball at the yardarm, or where it can best be seen, .... By Night. - Three White Lights, in the form of a triangle, will indicate ...

So you just saw a UFO? Think again. | Passive Impressions


Jan 9, 2011 ... So, you are out one night and you see an object in the sky that you can't quite explain. ... Steady moving lights, flashing each second, possibly green or red; sometimes very bright ... If the light is very bright, it is likely that you have just seen the ... You did of course miss out Noctilucent clouds and Aurorae.

green light on outside front door - Discussion on Topix


Jan 16, 2011 ... what does a green porch light mean? does it mean im holding or i got bud, ... neighborhoods around me that have a green light bulb on at night too. .... A red light means it's a whore house ...recall [the red light district ] As far ...

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When You See a Red, a Green, and a White Light - Interactive ...


When you see a red, a green, and a white light, you are approaching another power-driven vessel head-on and both vessels must give way.

Boating Navigation: Operating in Darkness - Part 2


Powerboat A: When white, red and green lights are visible, you are approaching a powerboat head-on. Give way to your starboard side. Powerboat B: When ...

What Do the Different Color Lights on a Boat Mean? | Trails.com


If you see a red light coming at you at night, it means the boat is on your boat's right, ... A white light that can be seen from all perspectives of the boat is supposed to be ... A green light over a white light comes from a fishing boat that is trawling, ...