Stricter Noise Guidelines to Help Ensure a More Peaceful, Quiet City for Residents To help give Irving residents a more peaceful and quiet environment in which to live, the city has strengthened its noise guidelines. New language allows the Police Department to provide enhanced enforcement of several ordinance clauses.   Highlights of the enhanced guidelines include: Prohibiting commercial vehicle idling in excess of 15 minutes within residential areas or within 300 feet of a residential structure. Prohibiting devices that cause vibration beyond the boundary of the source property. Limiting construction and repairs generally between 6 a.m. and 9 p.m. on weekdays, and between 7 a.m. and 8 p.m. on weekends. Testing of emergency signals only between 7 a.m. and 9 p.m.   “Our goal is to provide the public with a greater understanding of the ordinance and to offer a more comprehensive list of prohibited conduct,” said Police Chief Larry Boyd. “We are hopeful that the enhanced ordinance will be a more effective tool for law enforcement.”   Additional changes to the ordinance included the elimination of outdated language. Violations of any ordinance clause may result in a fine. For more information, contact the Irving Police Department at (972) 721-2661. Posted Oct. 1