References
- David A. Noyce, Casey R. Bergh, Jeremy R. Chapman, NCHRP Web Only Document, 123,Evaluation of the Flashing Yellow Arrow Permissive-Only Left-Turn Indication Field Implementation.
- Yi Qi, Xiaoming Chen, Lei Yu, Yubian Wang, Min Zhang, Peina Yuan and Khali R. Persad, FHWA/TX-09/0-6568-1, .
- 2011 (TMUTCD).