standees. Cars 1071–1090 are cab cars while 1201–1210 are cabless trailers. Phase III LRVs were built by A Goninan and entered service in 1997. They are numbered 1091–1110 and accommodate 26 seated and 212 standees. Phase IV LRVs were manufactured by United Group and CSR and entered service in December 2009. They are numbered 1111–1132 accommodate 37 seated and 248 standees. Phase I LRVs have two wheelchair positions while Phase II, III, IV and V LRVs have three positions. The newest Phase V LRVs were manufactured by CRRC Nanjing Puzhen and entered service on 17 November 2020. They are numbered 1133-1162/1211-1220; 1133-1162 are cab cars while 1211-1220 are cabless trailer. 30 of these are set to replace existing Phase II LRVs, while the other 10 are for expansion. Traction systems for Phase I and II LRVs consist of GTO thyristor choppers and DC traction motors provided by AEG, while those for the Phase III, IV and V LRVs consist of 2-level IGBT–VVVF inverters and asynchronous 3-phase AC traction motors provided by Mitsubishi Electric. The maximum speed for all LRVs is , although they rarely reach that speed because of the many grade crossings between stops and the close proximity between stops in Tuen Mun, Yuen Long and Tin Shui Wai. From the exterior it is difficult to differentiate between the first three types of LRVs. There are, however, distinct features that one can use to tell them apart; Phase III LRVs still retain their original green electronic displays while all other LRVs have new orange electronic displays. Phase I cars also have a wide window at the rear that can be opened in case of an emergency, while Phase II cars have a door at the back. The interior of the Phase III cars has a greenish look and the doors are also green. The Phase IV LRVs have a completely different appearance in contrast to the older phase. It has a white exterior livery with olive green and purple line on the side. The shape of the front of the LRV is more streamlined than the older phases. The door opening and closing mechanism was similar to the ones from the K-class cars used in the Tseung Kwan O line and Tung Chung line. The Phase IV has 3 surveillance cameras in each vehicle. Seat belts and wheelchair positions were also available in the Phase IV. On older-generation LRVs