1. American national standard for high-visibility safety apparel and headwear, (ANSI/ISEA 107-2004);ANSI/ISEA,2004
2. Evaluation of motorcycle daytime visibility aids;Ashford,1978
3. Development of a safety service patrol uniform standard (Report No. VTRC 99-TAR4);Brich,1998
4. High visibility garments for use in work zones (No. NTIS PB 84 166826);Brackett,1982
5. Design of work zone flagger's vest (FHWA/RD-83/008);Gordon,1983