Speed reduction effects of urban roundabouts/Greicio mazinimo poveikis ziedinese miesto sankryzose/Atruma samazinajuma efekts izmantojot lokveida celu mezglus pilsetvide/Linna ringristmike liikluskiirust vahendav moju A good rule of thumb: maximum DOC=1/2 of the inscribed circle of the in...