Standard Road Plans - LS Series Local Systems English PDF LS-625 Steel Beam Guardrail Tangent End Terminal (NCHRP 350 TL-3) LS-626 Steem Beam Guardrail Flared End Terminal (NCHRP 350 TL-3) LS-630 Steel Beam Guardrail Installation At Concrete Barrier Or Bridge Rail End Section (NCHRP 350 TL-3) LS-631 Steel Beam Guardrail Installation At Side Obstacle (Two-Way Protection) LS-632 Steel Beam Guardrail Installation At Side Obstacle (One-Way Protection) LS-633 Steel Beam Guardrail Installation At Railroad Signal LS-635 Steel Beam Guardrail Installation At Concrete Barrier or Bridge Rail End Section (MASH TL-2)