REFERENCES

1. Manual on Uniform Traffic Control Devices (MUTCD):
   http://mutcd.fhwa.dot.gov/
2. Standardized Highway Barrier Hardware Guide:
   http://www.aashtotf13.org/Barrier-Hardware.php
3. FHWA-accepted roadside hardware:
   https://www.fhwa.dot.gov/safety/rwd/reduce-crash-severity
4. End-treatment manufacturers:
   Road Systems Inc: http://www.roadsystems.com/
   Trinity Industries: http://www.highwayguardrail.com/
5. AASHTO Roadside Design Guide:
   https://bookstore.transportation.org/collection_detail.aspx?ID=105
6. Guidelines for the Selection of W-beam Barrier Terminals: FHWA Publication FHWA-SA-06-19, December 2006 (available from FHWA Report Center; request by email at Report.Center@fhwa.dot.gov)