There are two near my house.
Leucadia Bl. is a heavily used fairly major connector road, and Hermes and Hymettus are lower-volume side streets. The complication at the Hymettus roundabout (the easternmost of the two) is that Leucadia Bl. has enough of a slope to slow eastbound cyclists significantly. (Conversely, I can pretty easily match vehicle speeds westbound.) I normally bypass the Hymettus roundabout going east, because this is easy to do, and take the lane on the westbound approach. At the nearly-level Hermes intersection, I take the lane both ways.
__________________
"Far and away the best prize that life offers is the chance to work hard at work worth doing." --Theodore Roosevelt
Capo: 1959 Modell Campagnolo, S/N 40324; 1960 Sieger (2), S/N 42624, 42597
Carlton: 1962 Franco Suisse, S/N K7911
Peugeot: 1970 UO-8, S/N 0010468
Bianchi: 1982 Campione d'Italia, S/N 1.M9914
Schwinn: 1988 Project KOM-10, S/N F804069