Regional Plan Act Article 13

After a regional plan is announced and implemented, the department preparing the plan shall thoroughly review the plan and make necessary alteration every 5 years according to the actual development situation. But review and alteration may be performed at any time due to any of following causes:Occurrence of or to avoid serious disasters.Initiation of important development or construction undertakings.Suggestion of the Regional construction committee.Alteration of regional plans shall be performed according to the procedure prescribed in Article 9 and Article 10; where necessary, the upper-level competent authority may execute alteration similarly pursuant to Paragraph 2, Article 6.