U. S. Department of Transportation Federal Highway Administration

• FHWA Highway Noise Barrier Design Handbook
• FHWA Traffic Noise Model User's Guide- Version 2. 0 Addendum
• Improving Traffic Signal Management and Operations
• Measuring Cross-Border Travel Times for Freight
• Regional Climate Change Effects
• SAFETEA-LU 1808
• Signal Tming under Saturated Conditions