The first one is totally fine. When you're entering the traffic you're driving at about 15-20mph due to the sharp curve forcing you to, so there is plenty of ti

The first one is totally fine. When you're entering the traffic you're driving at about 15-20mph due to the sharp curve forcing you to, so there is plenty of time to look for traffic already on the roundabout coming from your left. With the exception of the signage, I'd say this is a textbook example of a roundabout done well. The second one is a bit of a mess. The fact that it is physically possible to take them at 60mph means they screwed up the design. They should've used something like slightly raised cobblestone for the hatched area, and they should've used a raised shoulder at the entrance/exit. This roundabout looks like it was designed by someone who has only ever seen it in a textbook, and never actually driven on one.