Standard Road Plans - RL Series Earthwork English PDF RL-1B Details of Embankment (Allowable Placement of Unsuitable Material) RL-2A Details of Embankment (Subgrade Treatment, Moisture and Density Control and Special Compaction) RL-4 Ditch Blocks and Dikes RL-7 Safety Ramp RL-8 Rural Entrance RL-9 Temporary Erosion Control Measures RL-12 Special Shaping for High-Tension Cable Guardrail at Median Obstacles RL-13 Special Grading at Side Piers RL-16 Temporary Stream Crossing, Causeway or Equipment Pad RL-20 Temporary Stream Diversion