3.1 Speed zoning and speed limitsRoad functions and hierarchies differ terjemahan - 3.1 Speed zoning and speed limitsRoad functions and hierarchies differ Bahasa Indonesia Bagaimana mengatakan

3.1 Speed zoning and speed limitsRo

3.1 Speed zoning and speed limits
Road functions and hierarchies differ considerably between rural and urban areas.
The nature of crash and injury severity risk also varies within these two broad
groupings.
The classifying of each road by its particular function will reflect current use in
most cases. A road’s function within a hierarchy provides a basis for more consistent
application of speed management across the road network, while recognizing that
higher risk sections or routes will need different speed limits to respond to their
relative risk. For example, areas around schools may require a lower speed limit
because of the presence of child pedestrians. Classifying roads by function also
enables identification of sections of the network where future engineering treatments
might reduce crash risk, allowing speed limits to then be re-assessed.
3.1.1 Classifying roads by function and activity
It is valuable for long-term speed management to establish a hierarchy and function
of road use for both the rural and urban network (see Figure 3.1).
Considerations should include:
• population density
• road user density
© HJ Sommer, GTZ, 2003
Figure 3.1 A simple road hierarchy for urban areas
Arterial Flow
Distribution
Access
Sub-arterial or
collector roads
Local roads
Speed management: a road safety manual
3 | What are the tools for managing speed?
51
through traffic (arterial) o • r local traffic (access) and relative traffic flow
• road user mix – pedestrians, motorcycles, bicycles, animal-drawn vehicles, buses,
trucks and cars
• ability to segregate road users
• adjacent footpaths, abutting developments
• roadside activity.
At the top of the hierarchy are roads that primarily cater for transport of people and
goods over long distances through rural areas. Generally, higher speed limits are
permitted on these arterial roads than are permitted on sub-arterial and local roads.
At the other end of the hierarchy, local roads often accommodate a variety of
functions and road user types, and are therefore usually assigned lower speed limits
to ensure the safety of all road users (Box 3.1).
Sometimes there are few roads suitable for high speeds in a country. However, there
may be a small network of good-quality arterial roads in rural areas that have, for
example, features such as wide, paved shoulders, median barriers, adequate clear
zones, few access roads, good alignment, good intersection treatments and few
vulnerable road users (for example, pedestrians needing to cross it to access goods
or services).
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3.1 Speed zoning and speed limitsRoad functions and hierarchies differ considerably between rural and urban areas.The nature of crash and injury severity risk also varies within these two broadgroupings.The classifying of each road by its particular function will reflect current use inmost cases. A road’s function within a hierarchy provides a basis for more consistentapplication of speed management across the road network, while recognizing thathigher risk sections or routes will need different speed limits to respond to theirrelative risk. For example, areas around schools may require a lower speed limitbecause of the presence of child pedestrians. Classifying roads by function alsoenables identification of sections of the network where future engineering treatmentsmight reduce crash risk, allowing speed limits to then be re-assessed.3.1.1 Classifying roads by function and activityIt is valuable for long-term speed management to establish a hierarchy and functionof road use for both the rural and urban network (see Figure 3.1).Considerations should include:• population density• road user density© HJ Sommer, GTZ, 2003Figure 3.1 A simple road hierarchy for urban areasArterial FlowDistributionAccessSub-arterial orcollector roadsLocal roadsSpeed management: a road safety manual3 | What are the tools for managing speed?51through traffic (arterial) o • r local traffic (access) and relative traffic flow• road user mix – pedestrians, motorcycles, bicycles, animal-drawn vehicles, buses,trucks and cars• ability to segregate road users• adjacent footpaths, abutting developments• roadside activity.At the top of the hierarchy are roads that primarily cater for transport of people andgoods over long distances through rural areas. Generally, higher speed limits arepermitted on these arterial roads than are permitted on sub-arterial and local roads.At the other end of the hierarchy, local roads often accommodate a variety offunctions and road user types, and are therefore usually assigned lower speed limitsto ensure the safety of all road users (Box 3.1).Sometimes there are few roads suitable for high speeds in a country. However, theremay be a small network of good-quality arterial roads in rural areas that have, forexample, features such as wide, paved shoulders, median barriers, adequate clearzones, few access roads, good alignment, good intersection treatments and fewvulnerable road users (for example, pedestrians needing to cross it to access goodsor services).
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3.1 Kecepatan zonasi dan batas kecepatan
fungsi dan hirarki jalan sangat berbeda antara daerah pedesaan dan perkotaan.
Sifat kecelakaan dan risiko keparahan cedera juga bervariasi dalam dua luas ini
pengelompokan.
The klasifikasi masing-masing jalan dengan fungsi tertentu yang akan mencerminkan penggunaan saat ini di
kebanyakan kasus . Fungsi Jalan ini dalam hirarki memberikan dasar untuk lebih konsisten
penerapan manajemen kecepatan seluruh jaringan jalan, sementara mengakui bahwa
bagian risiko yang lebih tinggi atau rute akan perlu batas kecepatan yang berbeda untuk menanggapi mereka
risiko relatif. Misalnya, daerah di sekitar sekolah mungkin memerlukan batas kecepatan yang lebih rendah
karena kehadiran pejalan kaki anak. Mengklasifikasikan jalan dengan fungsi juga
memungkinkan identifikasi bagian dari jaringan mana perawatan rekayasa masa depan
mungkin mengurangi risiko kecelakaan, sehingga batas kecepatan untuk kemudian dinilai kembali.
3.1.1 mengklasifikasikan jalan oleh fungsi dan aktivitas
Hal ini berharga bagi manajemen kecepatan jangka panjang untuk membangun hirarki dan fungsi
. penggunaan jalan untuk kedua jaringan pedesaan dan perkotaan (lihat Gambar 3.1)
Pertimbangan harus mencakup:
• kepadatan penduduk
• kepadatan pengguna jalan
© HJ Sommer, GTZ, 2003
Gambar 3.1 A hirarki jalan sederhana untuk daerah perkotaan
arteri Arus
distribusi
Access
Sub-arteri atau
jalan kolektor
jalan lokal
manajemen Kecepatan: a keselamatan jalan panduan
3 | Apa alat untuk mengelola kecepatan?
51
melalui lalu lintas (arteri) o • r lalu lintas lokal (akses) dan relatif arus lalu lintas
• pengguna jalan mix - pejalan kaki, sepeda motor, sepeda, kendaraan ditarik hewan, bus,
truk dan mobil
• kemampuan untuk memisahkan pengguna jalan
• jalan setapak yang berdekatan, perkembangan berbatasan
• aktivitas pinggir jalan.
Di puncak hirarki adalah jalan yang terutama diperuntukkan bagi angkutan orang dan
barang jarak jauh melalui daerah pedesaan. Umumnya, batas kecepatan yang lebih tinggi
diizinkan pada rute jalan arteri dari yang diizinkan di jalan sub-arteri dan lokal.
Di ujung lain dari hirarki, jalan lokal sering mengakomodasi berbagai
fungsi dan jenis pengguna jalan, dan karena itu biasanya ditugaskan kecepatan yang lebih rendah batas
untuk memastikan keselamatan semua pengguna jalan (Kotak 3.1).
Kadang-kadang ada beberapa jalan cocok untuk kecepatan tinggi di suatu negara. Namun, ada
mungkin jaringan kecil dari jalan arteri berkualitas baik di daerah pedesaan yang memiliki, untuk
contoh, fitur seperti lebar, bahu beraspal, hambatan median, jelas memadai
zona, beberapa akses jalan, keselarasan yang baik, perawatan persimpangan baik dan beberapa
pengguna jalan yang rentan (misalnya, pejalan kaki perlu menyeberang untuk mengakses barang
atau jasa).
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