A Policy on Rotary Intersections |
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Contents
TABLE OF CONTENTS | |
Advantages and Disadvantages of Rotaries 3 | |
The Central Island 13 | |
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Common terms and phrases
1-way road adjacent angles appear approaching avoid capacity carried central island channelization considerable considered construction cover cross slope crown line curb curvature curve design speed desirable determine difference directional island discussed divided drivers edge effect entering entrances and exits equivalent examples existing feet follows four grade greater hazard highway important indicated inner justified landscape later leaving less light limited located major maximum minimum weaving minor move movement natural necessary normal operation outer particularly path pavement pedestrian placed planting Policy portions possible practicable probably PROFILE proper radial roads radii radius reduction result reverse rotary design rotary intersections rotary movement rotary roadway SCALE separate shape shown in figure shows sides sight signs slow speed reduction STOP street tangent traffic density traffic flow traffic lanes traversed turning urban vehicles volume weaving distance weaving lengths whole width