of all kinds, except for tourist taxis, this between 2000 and 2007. Other combinations used exclusively in smaller collective locomotion vehicles were ZC, ZG, ZZ -the latter mostly used in basic taxis-, WP and some XH and YC. For the new 4-letter, 2-digit format some combinations for these vehicles are: BC, BJ, BX, CX, DG', DK, FD, FL, GB, GP, HG, HW, JW and the last ones have been KC, KD, KY and ' LZ. Since 2014, certain combinations for new system trailers and semitrailers are GR, HG, HX, JW, KD , KY and PT. As of 2008, most buses Transantiago (today RED) began to have exclusive serials for their new buses, these began with the combination BJFxxx (from BJFB10 to BJFZ99), then they occupied the combinations CJRxxx, the combinations FLXxxx, and the combinations GCBxxx, which is the current one. However, there are new buses that arrived in the system that were registered with whatever serials were assigned at the time. Also, there are buses of these serials that were withdrawn and are distributed to provinces and regions. Formerly, free zone plates had a red background and white letters, this plate configuration towards the end of 2004 began to be used on the plates of vehicles entered by free zone (Iquique and Punta Arenas). As an annex, it can be mentioned that the combinations ZD, ZE, ZF, WL, WN and some ZZ were only assigned to plates of this category in their early days. The design of the patents changed in 1991, from the combination DP, the strokes of the characters became a little thinner and the stamping was regularized. Also switched between the MX combination (the last of the old system, except for motorcycles and J-combinations for trailers) and BB.BB-10. The new plates have the letters stamped at right angles, so the relief is flat, while in the previous plates, the relief was rounded. As of the font change, the current string is maintained, starting the combination GK. From the PX combination, a little more thickness is observed in the letter together with a hologram-type stamp on them, which are reflected through light. This system is similar to those used in Netherlands (NL). References Chile Road transport in Chile Registration plates