Alternating 1-Lane, 2-Way Traffic: Advanced Temporary Signal + Temp Rumble Strips + 25 WZSL (45+ mph Highways, 8+ Days) (PDF 5.0MB) Zip 1.6MB: 341. Alternating 1-Lane, 2-Way Traffic: Simple Temporary Signal + Temp Rumble Strips + 25 WZSL (45+ mph Highways, 8+ Days) (PDF 5.0MB) Zip 809KB