RG-19 Single Lane Give Way Level 1 (MKL) Signs, also known as a RG19, RP51 or a R2-7 sign, are used to advise vehicles to give way to oncoming traffic on a single lane road around road works where manual traffic management is not in use. This sign is used in combination with the RG-19.1 GIVE WAY supplementary sign. It can be used on Level 1 Roads.