 As Kuala Lumpur was previously the capital of Selangor, vehicles registered there before 1974 are permitted to continue carrying the "B" series plates.Being in the economic heart of post-war Malaya and early Malaysia, Selangor's "B" series was historically the most commonly registered series in the country for decades before it was surpassed by Kuala Lumpur's "W" series in 1996 (caused by the majority of motor vehicle dealers registering new vehicles at Wangsa Maju RTD/JPJ) and the Johor's "J" series in 2005 (caused by massive numbers of Malaysians finding employment in Singapore and commuting between Malaysia and Singapore by motorcycles mostly registered in Johor and most Singaporeans who resides in Johor buying vehicle in this state to avoid an expensive COE for vehicles.