Hi Kent Kwek, thank you for your question. Vocational licence is generally valid for 3 years, after which it needs to be renewed. You will receive a notice from LTA to renew your vocational licence 1-2 months before it expires. You may check the status of your vocational licence here: https://onemotoring.lta.gov.sg/content/onemotoring/home/driving/vocational_licence/vocational_licence_renewal.html