Sleeper buses are a staple of long-distance travel in regions where rail networks are limited or expensive. Vietnam is arguably the most famous for its "Xe Khách" buses, which feature three rows of two-tiered bunk beds specifically designed for overnight travel between cities like Hanoi and Da Nang. India has a massive network of sleeper buses operated by both state corporations (like KSRTC) and private companies, offering both "AC" and "non-AC" berths. In China, sleeper buses are common for rural-to-urban transit, although they have faced increased regulation for safety. Turkey offers a very high-standard "bus culture" with reclining seats that function nearly as beds on routes like Istanbul to Cappadocia. Throughout South America, particularly in Peru, Argentina, and Chile, "Cama" and "Super Cama" buses offer seats that recline 160 to 180 degrees. In the West, the trend is growing; the United Kingdom has "Megabus Gold" sleeper services between London and Scotland, and in the United States, luxury sleeper services like "Cabin" have operated between Los Angeles and San Francisco, providing private pods for a full night's sleep.