Penjatahan ganjil-genap: Perbedaan antara revisi

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[[FileBerkas:THE STATE OF OREGON WAS THE FIRST TO GO TO A SYSTEM OF ODD AND EVEN NUMBERS DURING THE GASOLINE CRISIS IN THE FALL... - NARA - 555489.jpg|rightka|thumbjmpl|Pengguna kendaraan bermotor di hari genap mengantre di SPBU untuk pembelian bahan bakar pada hari genap di [[Portland]], [[Amerika Serikat]], 1973.]]
'''Penjatahan ganjil-genap''' adalah sebuah metode [[penjatahan]] untuk membatasi akses [[sumber daya]] untuk separuh populasi dalam satu hari tertentu. Metode ini dapat berupa [[penjatahan ruang jalan|pembatasan]] [[kendaraan bermotor]] untuk melalui jalan tertentu, [[parkir|memarkirkan]] kendaraan, atau membeli [[bahan bakar]] kendaraan di [[stasiun pengisian bahan bakar]]. Setengah populasi dapat memanfaatkan penggunaan jalan, parkir, atau pembelian bahan bakar berdasarkan [[plat nomor]] kendaraan mereka, apakah harus menggunakannya pada [[paritas (matematika)|hari ganjil atau hari genap]]. Contoh serupa dapat dimanfaatkan pada penjatahan [[air bersih]] untuk [[penomoran rumah|rumah]] bernomor ganjil atau genap saat [[kekeringan]].
 
Hari yang ditetapkan sebagai hari "ganjil" atau "genap" ditentukan berdasarkan pada penanggalan kalender [ada suatu bulan. Hal tersebut memunculkan isu bahwa ada suatu bulan yang memiliki satu hari lebih banyak untuk pengguna di hari ganjil.<ref>[https://books.google.com/books?id=GZUqAQAAIAAJ&q=%22two+odd+days+in+a+row%22&dq=%22two+odd+days+in+a+row%22&hl=en&ei=-t3rTeXnEPHRiAKq5dThCA&sa=X&oi=book_result&ct=result&resnum=2&ved=0CDAQ6AEwAQ Editorials on file (1979) Volume 10, Part 1]</ref> Terkadang pula penjatahan ganjil dan genap menggunakan hari-hari pada satu minggu, terkecuali hari Minggu saat penjatahan tidak berlaku.
 
== Kemangkusan ==
The efficacy of odd–even rationing is debated. In a case like gasoline, it does not actually reduce consumption, since people prevented from filling up one day will just fill up the day before, and vice versa; the total number of people in line on each day is unchanged.<ref>[http://blog.heartland.org/2012/11/odd-even-gasoline-rationing/ Odd Even Gasoline Rationing by Jim Johnston on November 14, 2012]</ref><ref>[http://cafehayek.com/2012/11/odd-scheme.html Odd scheme Odd Scheme by Don Boudreaux on November 12, 2012]</ref> Some propose it has psychological effects like reducing [[panic buying]],<ref>[http://www.ritholtz.com/blog/2012/11/why-does-odd-evengas-rationing-work/ Why Gas Lines Are Like Bank Runs & Why Odd/Even Gas Rationing Actually Works by Barry Ritholtz – November 13th, 2012, 7:15AM]</ref> discouraging people from making small purchases on a daily basis,<ref>[https://www.wsj.com/articles/SB10001424127887323551004578121311633255822 ET Fuel Rationing Is Hard to Gauge by CARL BIALIK November 16, 2012, 6:53 p.m.]</ref> or emphasizing the shortage and further discouraging unnecessary trips.<ref>[https://blogs.wsj.com/numbersguy/does-odd-even-rationing-work-1186/ November 17, 2012, 3:46 AM Does Odd–Even Rationing Work? Carl Bialik]</ref>
 
Rationing access, rather than gasoline, based on number plate parity can reduce [[traffic congestion]]. In some areas, wealthier people purposely own two cars with opposite-parity number plates, to circumvent any restrictions.<ref>{{cite journal|last=Viegas|first=José M.|date=October 2001|title=Making urban road pricing acceptable and effective: searching for quality and equity in urban mobility|journal=Transport Policy|volume=8|issue=4|pages=289–294|doi=10.1016/S0967-070X(01)00024-5|url=http://www.civil.ist.utl.pt/~martinez/PDF/MobiCredit/Paper4.pdf}}</ref> [[Vanity plate]]s which do not contain any digits may be arbitrarily classed as odd or even.
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