Road Work: Double Lane Closures On Multi-Lane Highways - Safety Protocols.pdf

## Summary of 616.8.37S (TA-37S) Stationary Double Lane Closures on Interior Lane

This document outlines procedures for stationary double lane closures on interior lanes of multi-lane highways, providing safety measures and guidance for construction or maintenance projects.

Key Requirements:

Advance Warning: Use EPG 616.33SD (TA-33SD) short duration signs for setting advance warning signs.
Protective Vehicles: Employ a vehicle with a flashing arrow panel (FAP) and truck/trailer mounted attenuator (TMA):
Activate high-intensity lights.
Position the TMA at least 150 feet before the work space, if feasible.
Use FAP in four-corner or alternating diamond caution mode.
Special Considerations:

For roadways with speed limits of 45 mph or less, a work vehicle can serve as the protective vehicle.
Refer to specific guidelines for mobile operations, short duration closures, long-term stationary operations, nighttime operations, speed limit guidance, and managing traffic capacity.

Specific Elements:

Signage & Channelizers:

Use 1' portable signs or 7' post signs for maximum height.
Implement channelizers for additional safety in work zones.

Work Zone Length & Buffering:

Define work zone length (L) based on urban/rural division and road type.
Establish buffer lengths (B) using tapers based on lane and shoulder widths.

Speed Sign Spacing & Taper Lengths:

Follow recommended spacing and taper lengths for signs and tapers, considering standard lane and shoulder dimensions.

Important Resources:

Refer to EPG 616.35M (TA-35M) for mobile operations.
Consult other referenced documents for specific scenarios like short duration closures (EPG 616.8.33SD), long-term stationary operations (EPG 616.6.2.2 & 616.6.78), nighttime work (EPG 616.6.83), and speed limit guidance (EPG 616.12).