Road Level (RL) Post author By CL Post date 14 May, 2020 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z The Road Level (RL) is the level of the existing or new roads as determined by a land surveyor. The existing and new RLs have to match with each other as required by the Land Transport Authority. ← Registered Inspector (RI) → Road Line Plan (RLP)