Roadside safety begins with installation of guardrail products from Gregory. Contractors prefer Gregory W-beam and Thrie-beam guardrail for its easier installation and long service life. All Gregory highway safty produts conform to AASHTO and ASTM specifications. Whether your project calls for weak-post, strong-post, w-beam or thrie-beam, curved or straight sections, Gregory products are designed as a system that assures consistency for fast, safe installations.