GridLock Traffic Systems, Inc. Search | Advanced Search | New Members | Coupons and Discounts | All Categories   Other >> A - Z >> Subcontractors GridLock Traffic Systems, Inc. 6400 Massachusetts AveIndianapolis, IN 46226 (317) 541-2727 Visit Site Connect With Us Send a message to: GridLock Traffic Systems, Inc. Your Name: Your Email: Subject: Message: (Date: 5/20/2024)