Transcript Perencanaan Bundaran untuk Persimpangan - Faculty e

Perencanaan Bundaran untuk
Persimpangan Sebidang
Motor Vehicle Conflict Points
Source: FHWA Roundabout Guide
ROUNDABOUT
• Low/medium flows
• Good for turners having to both cross
and merge with traffic streams
• Minimal delays at lower flows (i.e. offpeak)
• Not good for safety of cyclists and
other slow vehicles
Older Drivers - Tips
• Older people report that roundabouts are
one of the most difficult features of modern
motoring.
– Knowing the rules is an issue; and
– The complexity of watching all traffic while
manoeuvring is an issue.
• Discuss the rules for
traversing roundabouts.
Older Drivers - Tips
When turning left.
Approach in the left lane,
use your indicator before
and throughout the turn.
Turn into the left hand lane.
Older Drivers - Tips
When continuing
straight ahead.
Approach in either lane,
stay in that lane to exit, use
your indicator after you
enter the lane to indicate
your exit.
Older Drivers - Tips
When turning right.
Approach in right hand lane,
stay in that lane to exit, use
your right indicator before
entering the roundabout. Use
your left indicator as you
approach the exit.
Older Drivers - Tips
When making a U-Turn.
Approach in right hand lane,
stay in that lane to exit, use
your right indicator before
entering the roundabout.
Use your left indicator as
you approach the exit.
Older Drivers - Tips
General principle.
Enter in the lane that matches your
turn, stay in that lane, indicate your
intentions at each point of the
roundabout.
Key elements for pedestrians
Truck apron keeps roadway narrower
Truck apron keeps roadway narrower
Roundabout
Roundabout
Roundabout
Roundabout
Prosedur Perencanaan Bundaran
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Tentukan jumlah lajur bundaran (Tabel 1),
Tentukan kendaraan rencana, kecepatan rencana,
diameter dan jenis bundaran (Tabel 2),
Tentukan lebar jalur lingkaran (Tabel 3),
Rencanakan pulau bundaran (subbab 4.2.6),
Tentukan superelevasi jalur lingkaran (subbab 4.2.7),
Rencanakan lajur masuk/keluar (subbab 4.2.8.1),
radius masuk dan radius keluar (subbab 4.2.8.2),
kelandaian maksimum lengan pendekat (subbab
4.2.8.3), pulau pemisah (subbab 4.2.8.5),
Periksa syarat jarak pandang,
Rencanakan penempatan rambu, marka dan fasilitas
lainnya.