Temporary Traffic Control Elements

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Presentation transcript:

Temporary Traffic Control Elements Module 3 This training is provided under Susan B. Harwood No. SH-21004-10-60-F-8. It does not necessarily reflect the views or policies of the U.S. Department of Labor, nor does mention of trade names, commercial products, or organizations imply endorsement by the U.S. Government.

MUTCD Typical Applications

Work Zone Traffic Control Components Advance warning area Transition area Activity area Termination area

Work Zone Traffic Control Components Advance warning area Transition area Activity area Termination area

Work Zone Traffic Control Components Advance warning area Transition area Activity area Termination area

Work Zone Traffic Control Components Advance warning area Transition area Activity area Termination area

Activity 3.1: Work Zone Components Identify the components indicated on the worksheet.

Buffer Space Positioned in advance of work space Separates the traffic space from the work space

Buffer Space

Buffer Space

Types of Tapers Tapers Merging Shifting Shoulder One-lane, two-way Downstream

Types of Tapers Tapers Merging Shifting Shoulder One-lane, two-way Downstream

Types of Tapers Tapers Merging Shifting Shoulder One-lane, two-way Downstream

Types of Tapers Tapers Merging Shifting Shoulder One-lane, two-way Downstream

Types of Tapers Tapers Merging Shifting Shoulder One-lane, two-way Downstream

Taper Length

Taper Length

Merging Taper 35 (L) = 245 feet minimum 12 feet

Why is this taper longer than the taper in the preceding slide? 70 Why is this taper longer than the taper in the preceding slide?

Merging Taper At 30 mph with a lane width of 12 feet, the merging taper would be ___________. 180 feet minimum

Merging Taper At 55 mph with a lane width of 12 feet, the merging taper would be ___________. 660 feet minimum

Understanding the words “taper” and “tangent”

Shifting Taper Shifting taper = ½ L L = 60 mph W = 12’ L= 720’ 360’ L= 720’ ½ L = 360’

Shoulder Taper 1/3 L

Traffic signs in the advance warning area tell drivers what to expect

Sign Spacing What determines how far apart signs should be spaced? Depends on whether the road is classified as a/an Urban low speed Urban high speed Rural Expressway/freeway

Advance Warning Sign Spacing

Sign Spacing is Specified for Expressways & Freeways 1,000 ft 1,500 ft 2,640 ft

Procedures for Planning Lane Closures Multi-lane road Two-lane, two-way road

Installation and Removal of Temporary Traffic Control Devices Use of police Shadow vehicles

Activity 3.2: Device Spacing Use the tables for component spacing to develop a TCP for the problem you worked in Module 1. Roadway Diagram 1b

Actividad del Participante 3.2 Posted Speed 30 mph Lane Width 12 ft Information Source Length or Distance Buffer Length Table 6C-2 200 ft. Merging Taper Distance Table 6C-4 180 ft. Spacing Distance of Taper Section 6C.08 Section 6F.63 30 ft. Spacing Distance of Tangent 60 ft. Advance Warning Sign Spacing Table 6C-1 100 ft. Downstream Taper Table 6C-3 50 ft. minimum 100 ft. maximum

Actividad del Participante 3.2 How do the two drawings compare?