Remember, the flaggers job is handling traffic. Field Operations Guide for Safety/Service Patrols - Transportation Flagger stations shall be located in advanced warning area so that approaching road users will have sufficient distance to stop at an intended stopping point. Temporary traffic control signals shall be installed and operated in accordance with the provisions of. Flags may be used to call attention to the advance warning signs. Keeping the right-hand lane open increases the through capacity by eliminating right turns from the open through lane. Flashing warning lights shown on the ROAD WORK AHEAD and the ONE LANE ROAD AHEAD signs may be used. Guidance. When channelizing devices have the potential of leading vehicular traffic out of the intended traffic space, the channelizing devices should be extended a distance in feet of 2.0 times the speed limit in mph beyond the downstream end of the transition area as depicted. For short-term use on low-volume, low-speed roadways with vehicular traffic that does not include longer and wider heavy commercial vehicles, a minimum lane width of 9 feet may be used. A work vehicle displaying high-intensity rotating, flashing, oscillating, or strobe lights may be used instead of the channelizing devices forming the tapers or the high-level warning devices. These two kinds of crashes occur frequently near the taper and channeling devices. However, when this results in the closure of a left lane having significant left-turning movements, then the left lane may be reopened as a turn bay for left turns only, as shown. In rural areas, the flagger position will normally be on the right shoulder of the roadway and in urban areas, on the right curb. This procedure increases the through capacity by eliminating right turns from the open through lane. The merging taper should be removed in a method similar to a stationary lane closure. Whenever adequate stopping sight distance exists to the rear, the shadow vehicle should maintain the minimum distance from the work vehicle and proceed at the same speed. When more than one freeway lane is closed, a separate arrow board shall be used for each closed lane. This information also shall be used when work is being performed in the lane adjacent to the median on a divided highway. Other devices may be added to supplement the devices and device spacing may be adjusted to provide additional reaction time or delineation. To control the flow of traffic, flaggers must erect warning signs and position traffic cones and barricades to guide drivers through the traffic flow. wztc and flagging test Flashcards | Quizlet Floodlights should be used to illuminate haul road crossings where existing light is inadequate. Protect yourself and co-workers! In those situations where the distance between the advance signs and the work is 2 miles to 5 miles, a Supplemental Distance plaque should be used with the ROAD WORK AHEAD sign. Left turns may be prohibited as required by geometric conditions. Whenever blasting caps are used within 1,000 feet of a roadway, the signing shown shall be used. The AFADs STOP/SLOW sign shall have a means to positively lock, engage, or otherwise maintain the sign assembly in a stable condition when set in the STOP or SLOW position. A flagger is an employee who is hired by government agencies or construction companies to control the flow of traffic around road construction sites. Flashing warning lights and/or flags may be used to call attention to the advance warning signs. with letters at least 6 in. For long-term stationary work, existing conflicting pavement markings shall be removed and temporary markings shall be installed before traffic patterns are changed. Temporary traffic barriers, if used, shall comply with the provisions of. If used, AFADs should be located in advance of one-lane, two-way tapers and downstream from the point where approaching traffic is to stop in response to the device. Always face oncoming traffic and stand outside the path of an approaching vehicle. What equipment is required for a flagger on a California State Highway (Caltrans) project? Additional shadow vehicles to warn and reduce the speed of oncoming or opposing vehicular traffic may be used. The SLOW (W20-8) face shall have black letters and a black border on an orange background. In many of the typical applications, sign spacings and other dimensions are indicated by letters using the criteria provided in Table 6H-3. This TTC shall be used only for low-speed facilities having low traffic volumes. If insufficient gaps are available, consideration should be given to closing the ramp. Depending on road user conditions, flagger(s) or uniformed law enforcement officer(s) should be used to direct road users within the intersection. When opening the lane, the transfer vehicle should travel against vehicular traffic. This is important because the private entrances and driveways along the affected work area are not likely to have flagger control and knowing the proper procedures should increase the public and worker safety. When an AFAD is used, the advance warning signing should include a ROAD WORK AHEAD (W20-1) sign, a ONE LANE ROAD (W20-4) sign, and a BE PREPARED TO STOP (W3-4) sign. If an arrow board is used, it shall be used in the caution mode. 616.5.7. However, if the ramp is closed, guide signs should indicate that the ramp is closed. The number of lanes illustrated on the Reverse Curve or Double Reverse Curve signs shall be the same as the number of through lanes available to road users, and the direction of the reverse curves shall be appropriately illustrated. The normal procedure is to close on the near side of the intersection any lane that is not carried through the intersection. The flagger should identify an escape route that can be used to avoid being struck by an errant vehicle. For daytime activities, flaggers shall wear a high visibility hard hat, safety glasses, a Performance Class 3 top OR a Performance Class 2 top, and safety footwear. On the front cover there is a place to put a diagram or map showing the project limits to grab the publics attention and to help convey exactly where the pilot car will be used. For high speeds, a LEFT LANE CLOSED XX FT sign should be added for vehicular traffic approaching the lane closure, as shown in. If Type B warning lights are used in lieu of a Warning Beacon, they shall flash continuously when the SLOW face is displayed and shall not be flashed or illuminated when the STOP face is displayed. The amount and location of light provided for the work area is based on the type and detail of work being performed and the degree of difficulty in navigating the work zone. Flaggers should stand in front of the first cone in a taper, per the published standards in that region. If the set of lenses is located over any portion of the highway that can be used by motor vehicles, the bottom of the housing (including brackets) shall be at least 15 ft. above the pavement. This Chapter presents typical applications for a variety of situations commonly encountered. Early coordination with the railroad company or light rail transit agency should occur before work starts. However, the second arrow board should be placed in the closed interior lane at the downstream end of the second merging taper in the following situations: When a shadow vehicle is used in the interior closed lane, and the second arrow board is mounted on the shadow vehicle; If alignment or other conditions create any confusion as to which lane is closed by the second arrow board; and. A flagger should be able to demonstrate the . A truck-mounted attenuator may be used on the work vehicle and/or shadow vehicle. Too many foggers can hurt me! A traffic control flagger is a government agency or construction company employee who controls vehicle traffic flow around construction sites. For convenience in using the typical application diagrams, Tables 6C-1 and 6C-4 are reproduced in this Chapter as Tables 6H-3 and 6H-4, respectively. When PPE is furnished to the employee, it is the responsibility of the employee to use and maintain it as specified by MoDOT and the manufacturer. FHWA Safety Grant Products - Work Zone Safety Information Clearinghouse Issued by FHWA, Short Duration or Mobile Operation on a Shoulder, Lane Closure on a Two-Lane Road Using Flaggers, Lane Closure on a Two-Lane Road with Low Traffic Volumes, Lane Closure on a Two-Lane Road Using Traffic Control Signals, Work in the Center of a Road with Low Traffic Volumes, Surveying Along the Center Line of a Road with Low Traffic Volumes, Lane Closure on the Near Side of an Intersection, Right-Hand Lane Closure on the Far Side of an Intersection, Left-Hand Lane Closure on the Far Side of an Intersection, Half Road Closure on the Far Side of an Intersection, Multiple Lane Closures at an Intersection, Crosswalk Closures and Pedestrian Detours, Interior Lane Closure on a Multi-Lane Street, Lane Closure on a Street with Uneven Directional Volumes, Half Road Closure on a Multi-Lane, High-Speed Highway, Stationary Lane Closure on a Divided Highway, Lane Closure with a Temporary Traffic Barrier, Temporary Reversible Lane Using Movable Barriers, Changeable message sign or support trailer, S = posted speed limit, or off-peak 85th-percentile speed prior to work starting, or the anticipated operating speed in mph. STOP/SLOW paddles shall be at least 18 in. When do you use a flanger? | The Gear Page About Quizlet . 616.8.10a - MT). Standard. At spot lane closures where adequate sight distance is available for the reasonably safe handling of traffic, the use of one flagger may be sufficient. Be aware of your visibility to oncoming traffic. In addition to the channelizers, a flagger, STOP or YIELD sign, pilot car or temporary traffic signal controls traffic through this section. A work zone is an area of roadway with construction, maintenance, or utility work activities. Type C Steady-Burn or Type D 360-degree Steady-Burn warning lights may be used on channelizing devices separating the work space from vehicular traffic. Make sure that the crew is aware of the flaggers signals and knows what to do when the flagger sounds the warning. Cones may be omitted for a cross-section survey. Flaggers should not flag for more than two hours at one time, unless it is an emergency situation. One flagger should be the lead flagger and coordinate all activities. For short duration operations of 60 minutes or less, all signs and channelizing devices may be eliminated if a vehicle with activated high-intensity rotating, flashing, oscillating, or strobe lights is used. For most short-term local road applications, cones are acceptable where work is in active progress. 1251-2820P-MTDC, Incident Sign Installation Guide, Page 09 The gate arm shall remain in the upright position during the display of the steadily illuminated CIRCULAR YELLOW change interval. Listen to 70s Pink Floyd, or The Smashing Pumpkins - Gish. For better visibility, it shall be mounted a minimum of 7 feet from the pavement surface to the bottom of the sign. 616.5.1 Qualifications for Flaggers (MUTCD 6E.01), 616.5.2 High-Visibility Safety Apparel (MUTCD 6E.02), 616.5.3 Hand-Signaling Devices (MUTCD 6E.03), 616.5.3.3 Factors That Affect Sight Distances, 616.5.4 Automated Flagger Assistance Devices (MUTCD 6E.04), 616.5.5 STOP/SLOW Automated Flagger Assistance Devices (MUTCD 6E.05), 616.5.6 Red/Yellow Lens Automated Flagger Assistance Devices (MUTCD 6E.06), 616.5.7.1 STOP/SLOW Paddle - Flagger Procedures, 616.5.7.2 Stationary and Mobile Flagging Operations: 3, 2 or 1 Cone Procedures, graphical representation of personal protective equipment, EPG 900.1.11 Relation to Other Publications, EPG 902.5.36.2 Yellow Change and Red Clearance Intervals, EPG 616.5.2 High-Visibility Safety Apparel, https://epg.modot.org/index.php?title=616.5_Flagger_Control_(MUTCD_Chapter_6E)&oldid=52328, Minor Routes Shouldering Project Guidelines. Both signs shall have black legends and borders on white backgrounds. Turns can be prohibited as required by vehicular traffic conditions. Guidance. On high-speed roadways, a third shadow vehicle (not shown) may be used with Shadow Vehicle 1 in the closed lane, Shadow Vehicle 2 straddling the edge line, and Shadow Vehicle 3 on the shoulder. Where practical and when needed, the work and shadow vehicles should pull over periodically to allow vehicular traffic to pass. The temporary traffic control signals shall control both the highway and the haul road and shall meet the physical display and operational requirements of conventional traffic control signals as described in. The taper should have a length of 100 ft. (5 channelizers at 20 ft. spacing). 2009 Edition Chapter 6F. Chapter 6E - MUTCD 2009 Edition - FHWA - Transportation Do not allow other . If a thickness gage of .100 is needed and ten .010 gages are all stacked up on top of each other, we have 10 x .010 = .100. Vehicle hazard warning signals shall not be used instead of the vehicle's high-intensity rotating, flashing, oscillating, or strobe lights. Take 10 paces back toward the site, then walk three feet into the road, when it's safe to do so, and place the second cone. Signs, such as KEEP RIGHT (LEFT), may be placed along a temporary sidewalk to guide or direct pedestrians. They do so with the help of special equipment, such as traffic cones, warning signs and barricades. The following methods of signaling with paddles shall be used: Option. Figure 6H-1 Work Beyond the Shoulder (TA-1), Figure 6H-4 Short-Duration or Mobile Operation on a Shoulder (TA-4), Figure 6H-5 Shoulder Closure on a Freeway (TA-5), Figure 6H-6 Shoulder Work with Minor Encroachment (TA-6), Figure 6H-7 Road Closure with a Diversion (TA-7), Figure 6H-8 Road Closure with an Off-Site Detour (TA-8), Figure 6H-9 Overlapping Routes with a Detour (TA-9), Figure 6H-10 Lane Closure on a Two-Lane Road Using Flaggers (TA-10), Figure 6H-11 Lane Closure on a Two-Lane Road with Low Traffic Volumes (TA-11), Figure 6H-12 Lane Closure on a Two-Lane Road Using Traffic Control Signals (TA-12), Figure 6H-13 Temporary Road Closure (TA-13), Figure 6H-15 Work in the Center of a Road with Low Traffic Volumes (TA-15), Figure 6H-16 Surveying Along the Center Line of a Road with Low Traffic Volumes (TA-16), Figure 6H-17 Mobile Operations on a Two-Lane Road (TA-17), Figure 6H-18 Lane Closure on a Minor Street (TA-18), Figure 6H-19 Detour for One Travel Direction (TA-19), Figure 6H-20 Detour for a Closed Street (TA-20), Figure 6H-21 Lane Closure on the Near Side of an Intersection (TA-21), Figure 6H-22 Right-Hand Lane Closure on the Far Side of an Intersection (TA-22), Figure 6H-23 Left-Hand Lane Closure on the Far Side of an Intersection (TA-23), Figure 6H-24 Half Road Closure on the Far Side of an Intersection (TA-24), Figure 6H-25 Multiple Lane Closures at an Intersection (TA-25), Figure 6H-26 Closure in the Center of an Intersection (TA-26), Figure 6H-27 Closure at the Side of an Intersection (TA-27), Figure 6H-28 Sidewalk Detour or Diversion (TA-28), Figure 6H-29 Crosswalk Closures and Pedestrian Detours (TA-29), Figure 6H-30 Interior Lane Closure on a Multi-Lane Street (TA-30), Figure 6H-31 Lane Closures on a Street with Uneven Directional Volumes (TA-31), Figure 6H-32 Half Road Closure on a Multi-Lane, High-Speed Highway (TA-32), Figure 6H-33 Stationary Lane Closure on a Divided Highway (TA-33), Figure 6H-34 Lane Closure with a Temporary Traffic Barrier (TA-34), Figure 6H-35 Mobile Operation on a Multi-Lane Road (TA-35), Figure 6H-36 Lane Shift on a Freeway (TA-36), Figure 6H-37 Double Lane Closure on a Freeway (TA-37), Figure 6H-38 Interior Lane Closure on a Freeway (TA-38), Figure 6H-39 Median Crossover on a Freeway (TA-39), Figure 6H-40 Median Crossover for an Entrance Ramp (TA-40), Figure 6H-41 Median Crossover for an Exit Ramp (TA-41), Figure 6H-42 Work in the Vicinity of an Exit Ramp (TA-42), Figure 6H-43 Partial Exit Ramp Closure (TA-43), Figure 6H-44 Work in the Vicinity of an Entrance Ramp (TA-44). Law enforcement personnel should be secured to perform flagging functions, when needed, at intersections fully-controlled by an active traffic signal or stop signs. Stereotypical sounding Flangers and Phasers, especially Flangers, can be difficult to use musically. Flashing warning lights and/or flags may be used to call attention to the advance warning signs. The legend for the symbols used in the typical applications is provided in Table 6H-2. For nighttime closures, Type A Flashing warning lights may be used on barricades supporting signs and closing sidewalks. Standard. Tapers: the Transition Areas in Work Zones - Flagger Force The pilot vehicle will move to the head of the line of waiting vehicles and flagger will release the vehicles to follow the pilot vehicle back to the other flagger. Cones should be placed 6 to 12 inches on either side of the center line. Guidance: 01 The design and application of TTC devices used in TTC zones should consider the needs of all road users (motorists, bicyclists, and pedestrians), including those with disabilities.. Support: 02 FHWA policy requires that all roadside appurtenances such as traffic barriers, barrier . Most of the typical applications show TTC devices for only one direction. The design criteria contained in the AASHTO "Policy on the Geometric Design of Highways and Streets" (see. The AFADs STOP/SLOW sign shall be supplemented with active conspicuity devices by incorporating either: Option. The lane shall first be closed using channelizing devices and pavement markings. Flashing warning lights and/or flags may be used to call attention to advance warning signs. Advance guide signs providing information related to the temporary exit should be relocated or duplicated adjacent to the temporary roadway. Chapter 6C - MUTCD 2009 Edition - FHWA - Transportation An appropriate lane closure sign should be placed on Shadow Vehicle 2 so as not to obscure the arrow board. Stand alone, do not mingle with the work crew or the public. When a road used exclusively as a haul road is not in use, the haul road shall be closed with Type 3 Barricades and the Flagger symbol signs covered. For those of you who don't know what it is, essentially a large tapering plastic cone with a slot of glass at the wide end, it is inserted into the water for greatly . The brochure contains basic information about how pilot car operations work and gives the public advanced notification about the upcoming work zone. For short-term stationary work, lanes may be delineated by channelizing devices or removable pavement markings instead of temporary markings. For nighttime activity, high-visibility safety apparel that meets the Performance Class 3 requirements of the ANSI/ISEA 1072004 publication entitled American National Standard for High-Visibility Apparel and Headwear (see EPG 900.1.11 Relation to Other Publications) and labeled as meeting the ANSI 107-2004 standard performance for Class 3 risk exposure should be considered for flagger wear. California Flagger Certification Flashcards | Quizlet This TTC zone application may be used as an alternate to the TTC application shown in. Temporary traffic control signal timing shall be established by authorized officials. Traffic Control Best Practices: Buffer Space | Safety Resources If the work space extends across a crosswalk, the crosswalk should be closed using the information and devices shown in. Flashing warning lights and/or flags may be used to call attention to the warning signs. All of the above. of these devices. Option. She left during the treatment and returned later that evening. provisions should be made for keeping flaggers informed as to the activation status of these warning devices. The STOP (R1-1) face shall have white letters and a white border on a red background. It is a good idea to have an air horn or some type of warning device that can be heard by the crew above construction noise. Contract and permit flaggers shall be in accordance with Standard Specifications Section 107.4. Where channelizing devices are used instead of pavement markings, the maximum spacing should be 1/2 S feet where S is the speed in mph. Type B warning light(s) (see EPG 616.6.83) may be used in lieu of the Warning Beacon during the display of the SLOW face of the AFADs STOP/SLOW sign. intervals measured horizontally as shown in EPG 643.4 Railroads. Red/Yellow Lens AFADs shall have at least one set of CIRCULAR RED and CIRCULAR YELLOW lenses that are 12 inches in diameter. If needed, yield or stop lines should be installed across the ramp to indicate the point at which road users should yield or stop. A tolerance stack up, also known as compounding tolerances or accumulated tolerances, is a situation that should be avoided in an assembly area and never allowed in a quality control area. The Workers symbol signs may be used instead of SHOULDER WORK signs. When flagging on a rural undivided highway, the length of the work zone should not exceed three miles. Change the signs in the southbound transition area and advance warning area from a 2 LEFT LANES CLOSED AHEAD to a LEFT LANE CLOSED AHEAD. A one-lane, two-way taper should have a minimum length of 50 feet and a maximum length of 100 feet with . After the line of cars has passed the flagger station and there is a gap in traffic, the flagger will again stop the oncoming traffic and hold the vehicles until the pilot vehicle returns. During the period when the right-hand lane is opened, the sign legends and the channelization shall be changed to indicate that only the shoulder is closed, as illustrated in Figure 6H-5. For nighttime closures, Type A Flashing warning lights may be used on barricades that support signs and close sidewalks. One or three? Too many foggers can hurt me! - NPIC A work vehicle with high-intensity rotating, flashing, oscillating, or strobe lights may be used with the high-level warning device. Pedestrian traffic signal displays controlling closed crosswalks should be covered or deactivated. The procedure may be used during a peak period of vehicular traffic and then changed to provide two lanes in the other direction for the other peak. The illustrated information shall be used only when the vehicular traffic volume indicates that two lanes of vehicular traffic shall be maintained in the direction of travel for which one lane is closed. AFADs shall meet the crashworthy performance criteria contained in EPG 616.6.1. 616.5.7.2. If Red/Yellow Lens AFADs are used to control traffic in a one-lane, two-way TTC zone, safeguards shall be incorporated to prevent the flagger(s) from actuating a simultaneous display of a flashing CIRCULAR YELLOW lens at each end of the TTC zone. A short, single row of channelizing devices in advance of the vehicular traffic split to restrict vehicular traffic to their respective lanes may be added. The design criteria contained in the AASHTO "Policy on the Geometric Design of Highways and Streets" (see. MoDOT operations shall follow the Stationary & Mobile Flagging Operations: 3, 2 or 1 Cone Procedures as shown in Fig. By first closing off the left lane and then reopening it as a turn bay, the left-turn bay allows storage of turning vehicles so that the movement of through traffic is not impeded. 3. Flagging, and flaggers, are typically used when one lane of a road is closed and traffic must share the remaining lane. PDF Flagging Instruction Handbook - Caltrans Shadow Vehicle 2 should travel at a varying distance from the work operation so as to provide adequate sight distance for vehicular traffic approaching from the rear. When the maximum allowable work zone length cannot be attained due to this limitation, additional flagger symbol signs may be staged throughout the length of the work zone. The decision to use an advance flagger should be made at the work zone supervisor level. This information applies to low-speed, low-volume urban streets. If the ramp curves sharply to the right, warning signs with advisory speeds located in advance of the entrance terminal should be placed in pairs (one on each side of the ramp). Stand where oncoming traffic can see the flagger. The SHOULDER WORK sign may be used for work adjacent to the shoulder. A lane width of 9 feet may be used for short-term stationary work on low-volume, low-speed roadways when motor vehicle traffic does not include longer and wider heavy commercial vehicles. Find important information about traveling in and around roadway work zones, including information on traffic control training and certifications. Flashing warning lights and/or flags may be used to call attention to the initial warning signs. 616.8.10b - MT). When a single flagger is used, the flagger should be stationed on the shoulder opposite the spot lane closure or work space, or in a position where good visibility and traffic control can be maintained at all times. Also, a longer acceleration lane should be provided beyond the sign to reduce the gap size needed. Devices similar to those depicted shall be placed for the opposite direction of travel. Training and certification requirements for flaggers, traffic control technicians, and traffic control supervisors in each US state . Should the flagger observe a vehicle coming in the flaggers direction, the flagger should protect themselves first - THEN warn the crew. Ability to move and maneuver quickly in order to avoid danger from errant vehicles; 616.3 Temporary Traffic Control Elements (MUTCD Chapter 6C) Conversely, if the ramp is closed, guide signs should indicate that the ramp is closed. A truck-mounted attenuator may be used on the shadow vehicle or on the work vehicle. taper 50'-100' max. Option. For daytime and low speed roadways cones shall not be less than _____ in height., When cones are used on freeways or at night on all roadways . See EPG 616.5.2 High-Visibility Safety Apparel for nighttime high visibility apparel requirements. Guidance. The placement of signs should not obstruct or obscure arrow boards. These treatments are found in two different typical applications, while a third typical application shows how to handle pedestrian crosswalk closures. Standard. Additional DO NOT ENTER signs may be used at intersections with intervening streets.