Huh? That’s only OK if it’s a mini-roundabout, where you’ll be the only car on it due to size and there’s no point or time to changing indications once you’re on it. On a full size one you should both indicate before entering and once on it in the UK.
On entering a full-size roundabout, you indicate left if you’re taking the first turning, you don’t indicate if you’re taking the second, and you indicate right if you’re taking the 3rd or higher. Once on the roundabout, you then follow the same logic, so no indicators for next-but-one turn, then indicate left once yours is the next turn.
I drive through a minimum of 7 of the things each way on my daily commute, depending on route albeit including at least one mini one and one that’s part light controlled, but often including one 6-lane chaotic beast. I’ve also visited Milton Keynes, which is a selection of roundabouts loosely connected by houses.
No, what you said is that you would indicate right on approach to the roundabout, which is correct, but you should then change that and indicate left while on it when your junction’s next as you go round it- by your description, you’d still be indicating right at that point.
Mini: (Often referred to as “dots”). Usually on four-way intersections, they are a simple white circle, often mounded, in the middle of the junction. The usual rule applies: give way to the car on the right, but if several cars arrive at the same time, eye contact will usually break the jam.
Standard: These are bigger, sometimes much bigger, and on the approach, you are expected to filter into the traffic. There may be two or three lanes, and changing lanes requires a high level of spatial awareness. The most common collisions are caused by people cutting across lanes without checking. On very busy junctions, they are sometimes controlled by traffic lights. Very annoying when traffic is light.
Gyratory: These are really just very big roundabouts, or mini one-way systems, often with buildings in the middle.
Spiral: Large roundabouts with five or six exits are sometimes laid out so that if you start off in the correct lane, you won’t have to change lanes to reach your exit. They confuse some drivers who fail to follow the signs and may find themselves going round more than once or cutting across, risking a collision and annoying other drivers.
There is a spiral in California. It looks like the first in the USA. Without changing lanes, it looks impossible to go around it more than once. A driver who misses the signs and starts off in the wrong lane would just wind up getting spit out on the wrong road.
I believe you’re talking about the turbo roundabout near Hollister. That one was the second turbo in the US. The first was in Jacksonville FL. There’ve been several others in the US since.
BTW, they’re called “turbo” because the central island usually resembles a part of turbines. Nothing to do with the speed cars go around them. They have raised lane separators, making it very difficult to change lanes in the circle. They were invented in Netherlands.
Yes, that is the one. From google earth, it looks bigger, with more lanes, than the one in Jacksonville.
Since the lanes spiral, it looks impossible to stay in it circling endlessly. Unavoidably coming out on the wrong road looks quite possible, if you get started in the wrong lane.
Those may be spirals, but they aren’t turbos. Turbos definitely have raised lane separators. There have been some turbos built in the UK; I’ve seen complaints about them in my googling.