Directions to GridLock Traffic Systems, Inc. Search | Advanced Search | New Members | Coupons and Discounts | All Categories Real Estate & Construction >> Construction Suppliers >> Traffic Control Devices GridLock Traffic Systems, Inc. 6400 Massachusetts AveIndianapolis, IN 46226 | map (317) 541-2727 Visit Site Get directions to: GridLock Traffic Systems, Inc., 6400 Massachusetts Ave, Indianapolis IN Get directions from: Click to Print This Page