Extent of application. –

These rules shall apply to 

(i) Railway servants appointed on or after 1st February 1949;

(ii) Railway servants appointed prior to 1st February 1949 who have elected to be governed by these rules; and 

(iii) others who are brought under these rules by special orders;

(iv) a temporary Railway servant who has completed 3 years continuous service shall be entitled, from the date of completion of 3 years continuous service, to the same conditions of service in respect of question of leave (including leave salary) as he would have been entitled to if he held a lien on the post in which he was initially appointed.