The document discusses plans to introduce computer-based examinations for 70% selections and 30% LDCEs for Group B promotions on Indian Railways starting January 2021. It proposes holding a single, computer-based exam for each vacancy cycle testing professional knowledge, rules, and general awareness. CCAs must prepare question banks with at least 5000 questions each for the 70% and 30% exams by November-December 2020. Exams will be held on a single day across zones to improve transparency and reduce complaints and litigation regarding the selection process.