Kualitas bukti 4.63/5
Skor tinjauan delapan dimensi terhadap rubrik kualitas . Setiap dimensi dinilai 1–5.
- D1 Dasar sumber
- 5/5
- D2 Otoritas sumber
- 5/5
- D3 Aritmetika
- 4/5
- D4 Ketidakpastian
- 4/5
- D5 Cakupan
- 4/5
- D6 Prosa
- 5/5
- D7 Kejujuran persepsi
- 5/5
- D8 Kelengkapan peringatan
- 5/5
≈ Sama mungkinnya dengan
Dipersepsikan
Intuisi pesepeda dibentuk oleh cerita — gembok-U yang raib dari depan perpustakaan, sepeda bekas yang muncul di Craigslist seminggu kemudian, teman yang beralih ke sepeda komuter $90 setelah sepeda balap bagusnya hilang. Angka utamanya sulit dipastikan karena data polisi hanya menangkap sebagian kecil dari yang terjadi, dan sebagian besar pesepeda mengandalkan pengalaman hidup: «beri cukup banyak tahun dan seseorang akan mendapatkanmu.» Naluri itu lebih dekat ke benar daripada salah. Sepanjang masa hidup dewasa AS pada umumnya — yang sebagian besarnya mencakup suatu periode kepemilikan sepeda — setidaknya satu sepeda dicuri lebih mungkin daripada tidak bagi pesepeda yang berkomitmen, dan kira-kira seperti lempar koin di seluruh orang dewasa.
Perkiraan kasar: ~1 dari 3 sepanjang masa hidup dewasa AS; lebih tinggi di kalangan pesepeda rutin
Sumber: intuisi redaksi, bukan hasil survei
Aktual
~710 sepeda dewasa dicuri per 100.000 orang dewasa AS per tahun (perkiraan 2024)
Orang dewasa AS
Tampilkan perhitungan
Agarwal et al. (2025), sebuah survei tertimbang-YouGov yang ditinjau sejawat terhadap 1.748 orang dewasa AS ditambah penguat 430 pesepeda, memperkirakan sekitar 2,4 juta sepeda dewasa dicuri di Amerika Serikat setiap tahun — laju populasi sekitar 709,6 per 100.000 orang dewasa per tahun. Penggabungan naif selama horizon hidup dewasa 59 tahun, memperlakukan setiap tahun sebagai percobaan independen pada laju populasi, menghasilkan 1 − (1 − 0,0071)^59 ≈ 0,343. Ini adalah probabilitas seumur hidup per orang dewasa AS, bukan angka per pemilik: ia memperhitungkan fakta bahwa tidak setiap orang dewasa memiliki sepeda, dan tidak setiap pemilik memilikinya secara terus-menerus. Di kalangan pesepeda rutin angkanya jauh lebih tinggi — sub-sampel penguat pesepeda Agarwal et al. melaporkan laju viktimisasi tahunan yang meningkat secara material, dan Crime Survey for England and Wales telah lama menunjukkan sekitar 2 % rumah tangga pemilik sepeda terkena per tahun, yang bergabung menjadi kira-kira 1 − 0,98^59 ≈ 70 % sepanjang masa hidup dewasa dengan kepemilikan sepeda terus-menerus. Laju viktimisasi berulang dalam pencurian sepeda terdokumentasi dengan baik (sebagian kecil orang terkena beberapa kali), yang mendorong perkiraan korban-unik ke bawah relatif terhadap penggabungan naif. Ketidakpastian lebar karena survei ini adalah perkiraan AS modern skala besar yang pertama dan menggantikan ekstrapolasi NCVS «1,5 juta per tahun» yang sering dikutip tetapi tipis secara metodologis dari panduan COPS 2008.
Catatan: Angka utama 34 % adalah probabilitas seumur hidup rata-rata populasi — ia mencam…
Angka utama 34 % adalah probabilitas seumur hidup rata-rata populasi — ia mencampur orang dewasa pemilik sepeda dengan non-pemilik. Di kalangan pesepeda berkomitmen yang memiliki dan mengendarai sepeda terus-menerus selama beberapa dekade, probabilitas seumur hidup setidaknya satu pencurian jauh lebih tinggi; sub-sampel penguat pesepeda Agarwal et al. melaporkan laju tahunan yang meningkat secara material, dan angka per-rumah-tangga-pemilik CSEW Inggris bergabung menjadi kira-kira 70 % selama 59 tahun kepemilikan terus-menerus. Laju pencurian sepeda juga sangat bervariasi menurut kepadatan kota, kualitas gembok, dan lokasi parkir, tetapi literatur akademis bersifat kualitatif tentang pengali-pengali ini — Sidebottom et al. (2009) mencatat bahwa pesepeda sekitar tiga kali lebih mungkin mengalami sepeda dicuri dibandingkan pemilik mobil mengalami mobil dicuri, dan panduan COPS menekankan bahwa gembok «aman» adalah yang menahan serangan perkakas tangan setidaknya selama tiga menit, tetapi tidak ada studi risiko-relatif yang ditinjau sejawat yang mengukur pengali gembok-U vs gembok kabel. Panduan COPS memang menyatakan bahwa «sebagian besar sepeda yang dicuri, terlepas dari lokasi pencurian, sama sekali tidak digembok atau diamankan dengan gembok yang butuh sedikit gaya untuk dipatahkan atau dilepas» — artinya sepeda tanpa gembok dan bergembok kabel mendominasi kelompok korban — tetapi ini adalah statistik pangsa-sepeda-dicuri, bukan rasio laju per-sepeda-malam, dan tidak dapat diubah menjadi pengali «ditinggal tanpa gembok di depan kafe» yang bersih tanpa penyebut paparan (fraksi kejadian parkir pesepeda yang tidak diamankan) yang tidak dilaporkan studi mana pun yang dipublikasikan. Temuan yang paling konsisten di seluruh literatur bersifat berlawanan intuisi: sepeda lebih sering dicuri dari premis rumah tangga, garasi, dan gudang daripada dari rak umum, sebagian karena paparan rak-umum bersifat intermiten sementara paparan di rumah bersifat terus-menerus. Agarwal et al. juga menemukan bahwa rumah tangga berpendapatan lebih rendah dan beberapa kelompok ras non-kulit-putih di AS mengalami laju pencurian yang jauh lebih tinggi; pengali persisnya ada dalam tabel makalah dan tidak direproduksi di sini. Nilai ekonomi dari pencurian individual sederhana — nilai sepeda median dalam sampel Agarwal adalah $374,50 — itulah mengapa begitu sedikit pencurian yang dilaporkan.
Risiko terkait
Risiko lain dengan tema serupa — untuk menjelajahi ketakutan terkait.
Penyerangan saat hitchhiking
Berapa kemungkinan diserang atau dianiaya saat menumpang kendaraan (hitchhiking)?
Penipuan cek via pos
Berapa peluang menjadi korban pencurian surat atau penipuan cek yang dikirim?
Pilih penantang
In the United States, roughly 2.4 million adult bicycles are stolen each year, according to a peer-reviewed YouGov-weighted survey published in Findings in January 2025 — a rate of about 710 per 100,000 US adults per year. Compounded naively over a 59-year adult life-horizon, that gives a lifetime probability of around 1 in 3 that an adult experiences at least one stolen bicycle. That headline averages over the entire adult population, including the half who never own a bike. Filter to people who actually own and ride a bike for years at a stretch and the figure climbs substantially — the UK Crime Survey has reported about 2% of bicycle-owning households victimised per year since the mid-2010s, which compounds to roughly 70% over a full adult life of continuous ownership. The instinct that “give it enough years and somebody will get you” is, for committed cyclists, well-calibrated.
The official numbers undercount dramatically. The FBI’s NIBRS pipeline counted about 128,000 bicycle thefts reported to police in 2023; the Agarwal et al. survey implies the true total is roughly twenty times higher. The 2008 COPS Office guide on bicycle theft put the cross-country average reporting rate at 56%, but the US figure now appears closer to 7%. Most stolen bicycles are too individually low-value to motivate a police report — Agarwal et al. peg the median bike’s value at about $375 — and many are insured under household contents policies where the deductible exceeds the bike’s worth. This means the visible side of bicycle crime, the bit that shows up in crime dashboards and annual UCR press releases, is a small and not-necessarily-representative fraction of the actual victim pool.
Where bicycles get stolen runs counter to the public-rack mental image. The COPS guide notes that most bicycles reported stolen “are taken from on or near the premises of the victim’s home (including garages and sheds), or from outside of shops or recreational facilities” — the modal scene is a garage or back yard, not a busy public stand. The bike-rack-outside-the-library archetype shows up disproportionately in news coverage because the bikes there are higher-value and the cyclists more vocal, not because that location is the biggest source of incidents. Lock quality matters, but the academic literature is qualitative: Sidebottom and colleagues’ 2009 European Journal of Criminology paper finds cyclists are about three times more likely to have a bike stolen than car owners are to have their car stolen, and the COPS guide defines a “secure” lock as one that withstands a three-minute hand-tool attack, but there is no peer-reviewed relative-risk study quantifying a U-lock vs cable-lock multiplier. The honest summary: bicycle theft is common, mostly invisible to the official statistics, and dominated by opportunistic theft from the places cyclists assume are safe.
Fakta terkait
Di AS, sekitar 2.4 million sepeda dewasa dicuri setiap tahun, sekitar 1 in 3 sepanjang masa dewasa dan lebih tinggi bagi pesepeda rutin. Diperkirakan 93% pencurian tidak pernah dilaporkan ke polisi.
Buku besar klaim
Setiap angka di bawah ini adalah apa yang dilaporkan masing-masing sumber, dengan kutipan kata demi kata yang kami andalkan dan bagaimana kami sampai pada angka kami. Klik tautan mana saja untuk memverifikasi langsung.
2/3 sumber diverifikasi secara independen kata demi kata terhadap sumber terkutip
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[1] Findings (peer-reviewed open-access transport journal) — Bicycle Theft in the US: Magnitude and Equity Impacts Terverifikasi
Bicycle Theft in the US: Magnitude and Equity Impacts- Statistik
About 2.4 million adult bicycles are stolen annually in the US, a rate of 709.6 per 100,000 people per year. The annual value of adult bicycle theft is about $1.4 billion. In 2019, about 157,669 bicycles were reported stolen to law enforcement — implying roughly 93% of incidents go unreported.- Kutipan
“"About 2.4 million adult bicycles are stolen annually in the US, a rate of 709.6 per 100,000 people per year. The annual value of adult bicycle theft is about $1.4 billion. In 2019, about 157,669 bicycles were reported stolen to law enforcement in the United States." ”
- Data sumber dari
- 2025-01-16
- Diakses
- 2026-05-25 · salinan arsip
- Verifikasi
- Kutipan diambil ulang secara independen dan dikonfirmasi kata demi kata terhadap sumber terkutip selama audit pendasaran kami.
- Perhitungan
- The 709.6/100,000/year is the headline annual rate per all US adults (denominator includes non-owners). For the normalized lifetime figure we treat each adult-year as an independent trial at that rate and compound over a 59-year horizon: 1 − (1 − 0.00710)^59 ≈ 0.343. The 2.4 million annual total comes from Agarwal et al.'s YouGov-weighted survey (n = 1,748 general population + 430 active cyclist booster, March 2024), with weighting to match US adult demographics on gender, age, race, education, and region. The implied underreporting ratio (2.4M survey vs 157,669 police-reported in 2019) is about 15:1 — far higher than the ~2:1 NCVS-vs-UCR ratio for burglary, partly because most stolen bikes are individually too low-value to motivate filing a police report.
- Independensi
- This is the primary survey source; cross-checked against Bike Index's registry-based theft counts (which align directionally with the survey's growth claim) and the FBI Crime Data Explorer NIBRS figure (~127,646 reported in 2023) as a lower bound.
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[2] US Department of Justice, Office of Community Oriented Policing Services; authored by Shane D. Johnson, Aiden Sidebottom, and Adam Thorpe — Bicycle Theft (Problem-Oriented Guide for Police No. 52) Terverifikasi
Bicycle Theft (Problem-Oriented Guide for Police No. 52)- Statistik
Across 17 countries surveyed (including the United States), on average only 56 percent of bicycle thefts were reported to the police; most bicycles reported stolen are taken from on or near the premises of the victim's home (including garages and sheds), or from outside of shops or recreational facilities.- Kutipan
“"Across the 17 countries surveyed (including the United States), on average only 56 percent of bicycle thefts were reported to the police. … Most bicycles reported stolen are taken from on or near the premises of the victim's home (including garages and sheds), or from outside of shops or recreational facilities." ”
- Data sumber dari
- 2008-01-01
- Diakses
- 2026-05-25 · salinan arsip
- Verifikasi
- Kutipan diambil ulang secara independen dan dikonfirmasi kata demi kata terhadap sumber terkutip selama audit pendasaran kami.
- Perhitungan
- Used for the qualitative framing of where thefts happen (counter-intuitively, the residential premises and garage are the modal location rather than the public rack) and as supporting evidence for the underreporting story. The 56% reporting rate in this guide is an international cross-country average; the Agarwal 2025 US-specific figure is much lower (~7% reported, or 93% unreported) and supersedes it for the US headline. The 2004 US figure cited in the guide ("more than 250,000 bicycles stolen each year" based on NCVS) is also superseded by Agarwal 2025.
- Independensi
- DOJ COPS Office is an independent law-enforcement-research arm; the authors are UK-based academic criminologists (UCL Jill Dando Institute) writing under US federal grant. Independent of the Agarwal 2025 transport-research pipeline.
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[3] Office for National Statistics (UK), Crime Survey for England and Wales — Overview of bicycle theft in England and Wales
Overview of bicycle theft in England and Wales- Statistik
Around 2 in 100 bicycle-owning households in England and Wales were victims of bicycle theft in the previous 12 months; this is roughly one-third of the 1995 peak of 6 in 100.- Kutipan
“"Around 2 in 100 bicycle-owning households have been victims of bicycle theft in the previous 12 months … this is around a third of the rate in the 1995 peak of around 6 in 100 households. The Crime Survey for England and Wales has collected information on bicycle theft in a consistent manner since the survey first ran in 1981." ”
- Data sumber dari
- 2017-07-20
- Diakses
- 2026-05-25 · salinan arsip
- Perhitungan
- International cross-check anchor. 2% per bicycle-owning household per year compounds to 1 − 0.98^59 ≈ 0.70 over an adult lifetime of continuous bike ownership, which is consistent with the much higher per-owner rate implied by Agarwal 2025 once non-owners are filtered out of the denominator. The UK Crime Survey is a long-running household victimization survey directly comparable in methodology to the US NCVS but with explicit bicycle-theft tabulation that NCVS lacks.
- Independensi
- ONS is the UK's independent national statistics agency. CSEW methodology is fully independent of both Agarwal 2025 (US YouGov panel) and the COPS 2008 guide (US police-data review).