The Transportation Improvement Program (TIP) is a four-year schedule of surface transportation projects and programs for Oahu. The current TIP covers years 2015-2018. Twice annually, proposed revisions to the TIP are entertained to allow for adjustments that reflect changes in project development and implementation. TIP revision #12 is considered a TIP amendment, which means that it includes major changes to some projects. Click the link below for more information and to comment on TIP Revision #12.