use of the vehicle (AA 10 00 and BB BB 10 formats): Private vehicles (AA·00·00, AA·AA·00), trailers (JA·00·00, AA·AA·00) and motorcycles (AA*000, AAA*00): white background with black letters. Carabineros de Chile, series M, AP, Z, B, RP, LA, AG, C and J: black background with white letters. (some of these plates are plastic, made by entities outside the Chilean Mint) Diplomats: Plates AT, CC, CD, OI, PAT (Transitory Access Permit), CH (Honorary Consul) blue background with white letters. Basic Taxi: dark orange background with black letters. Radiotaxi tourism: light orange background with white letters. Collective taxis: yellow background with black letters. Buses of Transantiago: white background with green letters. Vehicles purchased in Free Zone: red background with white letters (formats AA·10·00 and AA·AA·00, cars and trucks). Provisional Patents: Orange background with black characters. (PR*000 and PR*0000 from 2014) Firefighters: red background with black or white letters. (Some of these license plates have the format CBS*000 and below with the legend CHILE, very few pumps reached an agreement with the Fire Department of Chile, and each fire station created its own format with the name of the associated company). Example: the fire department of San Miguel and La Cisterna have their plates with the name of the fire station, above, dark red background plate and white characters). Bomba España, adopted three-digit CBS plates and the word Chile below, dark red plates with black characters. The measurements of the license plates are 360 × 130 mm, and 145 × 120 mm for motorcycles. Curiosities The combinations that were never used in the old system, since they do not appear in the list of combinations of the Patent Validation Instructions of the Civil Registry and Identification Service were: BB, AD, AK, AY, GG, HZ, DC and VW. These were incorporated later, only for motorcycles (except GG and VW). Likewise, the only combinations, according to the same instructions, that ended in M and Q, and that used the I and the O , were: XM, XQ, DI, ZI, JO, AI , BI, BM, BO, CI, CM, CO, ' DM and C. Despite being included in said document, the combinations JO, XM, XQ and ZI do not exist in No vehicle registered or in the records. 582 2-letter combinations are recorded in that instruction manual, including combinations of trailers and motorcycles. For 7 years, the combination EU was used only for taxis and collective taxis