Specifications include, but are not limited to: This work consists of providing temporary traffic control to maintain vehicular, bicycle, and pedestrian traffic through the project work zone. MATERIALS: A. Crashworthy temporary traffic control devices in accordance with current AASHTO MASH standards. B. Category I through Category III temporary traffic control devices - Certification of compliance with MASH required. C. Category I devices - The manufacturer or contractor may self-certify that the devices meet the MASH criteria. D. Category II and III devices - MASH eligibility letter, including all applicable attachments required for each type of device. E. Submit documentation requesting approval of temporary traffic control devices 14 days before the start of work. Submission requirements and instructions for source information are listed on DelDOT’s website: https://deldot.gov/Business/prodlists/index.shtml. The Department approves temporary traffic control devices based on: 1. Self-Certification 2. Approved products lists