of contactless fare collection system for public transport services in the Philippines. Design Body designs of jeepneys vary by region. Some are plainly colored, while others can use massive variety. They either use sheet metal or stainless steel as body panels. Some jeepneys can be decorated with stickers or spray paint, with designs consisting of caricatures, illustrations or pictures inspired from popular culture, such as actors and actresses, cartoon, anime, comic, game, or movie characters, abstract designs and lines, religious icons and others. In the central island of Cebu, the bulk of jeepneys are built from second-hand Japanese trucks, originally intended for cargo. These are euphemistically known as "surplus trucks". Popular jeepney manufacturers in Cebu are Chariot and RDAK, known for its "flat-nosed" jeepneys made from surplus Suzuki Carry (also known as multicab) and Isuzu Elf trucks, which are no longer in use in Japan owing to road tax and obsolescence in their country of origin. These are equipped with high-powered sound systems, racing themes, and are said to be bigger and taller than those in Manila. In Bulacan, particularly in the city of Malolos, shorter extended "owner" jeeps called "Karatig" are used for short-distance, inter-city transportation. The size varies, with approximately 3 meters of passenger space which is longer than and can seat at least twice as many passengers as private-use "owner" jeeps. The "Karatigs" are less ergonomic and fuel-efficient compared to the more standard-size public utility jeeps dominating the rest of the country. Despite this awkward size, "Karatig" jeeps' unique and even "cute" size has become an icon contributing to the culture and experience of Bulacan public transportation. Nelson-type jeepneys are manufactured in Davao City and are known there as "uso-uso". The designs of these jeepneys are very different from the traditional style. These jeepneys feature modern front grille and body designs, lowered ride height, and industrial quality paint jobs. Newer models of Nelson-type jeepneys feature chrome wheels, equipped with radial tubeless tires. They are almost always equipped with a powerful stereo system, so they are often referred to as "mobile discos." Many manufacturers are moving to build modern-looking jeepneys such as Hummer and Jeep Wrangler Rubicon lookalikes and oversized van-style passenger jeepneys with headlights, hoods, bumpers and other components salvaged from AUVs and sport utility vehicles like the Honda CR-V or the Toyota Tamaraw. In Iloilo City, jeepneys called passad are known for bearing a resemblance to