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Chris Tacke Safety Consultant Montana Department of Transportation.

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Presentation on theme: "Chris Tacke Safety Consultant Montana Department of Transportation."— Presentation transcript:

1 Chris Tacke Safety Consultant Montana Department of Transportation

2  Work zone Data  Temporary Traffic Control (TTC)- common problems  Hazards of road construction and how to fix them  Methods/tools used to protect roadway workers and users

3 Workers in construction, utilities, or public works jobs on both highways or city streets are at risk of fatal or serious debilitating injuries. The work is in congested areas with exposure to high traffic volumes and speeds, as well as under conditions of low lighting, low visibility, and inclement weather. The work is routinely near both moving construction vehicles and passing motor vehicle traffic.

4 This attenuator truck was rear ended at 63 mph by an inattentive driver, despite workers’ attempts to get the driver’s attention. Two workers were hurt and the driver received minor injuries. The driver pled guilty to reckless endangerment of a road-way worker. Workers in the roadway are at risk of injury from a variety of general traffic vehicles entering the work zone: Drunk drivers Sleepy or impaired drivers Impatient, reckless drivers Drivers using cell phones; other inattentive drivers Law enforcement and emergency vehicles Disabled vehicles pulling in and parking Lost drivers looking for directions Courtesy of Washington State Dept. of Transportation

5 Flaggers and other Workers On Foot* are exposed to the risk of being struck if they are not visible to motorists or equipment operators. * Workers On Foot refers to any pedestrian worker on the ground in the work zone Driver’s view passing by a work zone under overcast/rainy conditions... Do you see the flagger?

6 Workers who operate construction vehicles or motorized equipment risk injury due to rollovers, collisions, being caught between or struck by operating equipment. Overturned compactor on loose soil

7  During peak construction season, Approximately 20% of our nation’s highway system is under construction with more than 3,000 work zones  Approximately 12 billion vehicles miles of travel a year will be through active work zones  Motorist can expect to encounter an active workzone 1 out of every 100 miles driven on the nations highway system   More than 40,000 people are injured each year as a result of crashes in work zones  One work zone fatality every 8 hours- 3 per day  One work zone injury every 9 minutes-160 per day  Source: The National Work Zone Safety Information Clearinghouse

8  OSHA Standards  29 CFR 1926 Subpart G  (g)  (1) Construction areas shall be posted with legible traffic signs at points of hazard  (2) All Traffic control signs or devices used for protection of construction workers shall conform to Part VI of the Manual of Uniform Traffic Control Devices (MUTCD)  (a) Flaggers  Signaling by flagger and the use of flaggers, including warning garments worn by flagger shall conform to Part VI of the MUTCD

9  The primary function of Temporary Traffic Control (TTC) is to provide for the reasonably safe and effective movement of road users through or around TTC zones while reasonably protecting road users, workers, responders to traffic incidents, and equipment.

10 1. Fulfill a specific need 2. Command Attention 3. Convey a clear and simple meaning 4. Command respect of the road user 5. Give adequate time for proper response  Sign spacing is dependent on speed of roadway and type of roadway



13 Advanced Warning Area

14 Issues:  Sign order – Road Work first sign.  Speed Limit Step Down o One step down: example 70 mph – 45 mph o Two step down signs if speed limit difference is 30 mph or greater.





19 Issues:  Device Spacing – 1 x the speed limit  Proper length: o 75 mph – 900 feet o 55 mph – 660 feet o 45 mph – 540 feet


21 Issues:  Begin/End Work Zone Signs o 500 feet before and after work zone.  Device Spacing – 2 x speed limit  Proper Speed Limit for activities  Longitudinal Buffer Space o No vehicles, equipment, or materials


23 Issues:  End Work Zone (if within 500 feet) or End Road Work sign  End of work zone speed limit signs  Work occurring outside temporary traffic control zone


25  Train and re-train on proper TTC setup and procedures  Ensure proper set up  Periodically inspect workzone and signage




29 A blind spot (or blind area) is the area around a vehicle or piece of construction equipment that is not visible to the operator, either by direct line-of-sight or indirectly by use of internal and external mirrors. Vehicle and Heavy Equipment Blind Spots This compact wheeled loader, with its bucket raised, is approaching the work site and no one is watching.

30 Example: this mapping diagram shows the blind areas around a Ford F-800 dump truck. 8 ft in front and 16 ft in rear are the most hazardous areas. The driver side door area is the only zone within 8 feet of the dump truck that is safely visible.

31 HAZARDS: ●Running over or striking pedestrians ●Smashing site materials and tools ●Striking other equipment or vehicles ●Rollover on steep slopes ●Contact with utilities Figure in white shows where the worker was standing when he was run over. The driver did not see the victim. “Roadway Construction Worker Dies From Crushing Injuries When Backed Over by a Dump Truck”

32 Construction equipment is typically large and has an enclosed cab, which can make the blind areas around this equipment very large and hard to see. The bigger the equipment the larger the blind spots or h azardous areas for p edestrians and ground workers. The problem is that pedestrian or ground workers Often need to be near moving equipment and vehicles to perform their work. Operator’s view from inside a motor grader cab

33 Driver's field of view inside of a tanker truck. Can you see the workers in front of and directly to the right of bug shield? (circle) Truck drivers and equipment operators sit high above the ground and cannot see pedestrian workers crossing close to front of them. Obstructions in a driver’s LINE of SIGHT might be: Mirrors Cab arrangements Door and window post Stacks and air cleaners Bug shield or other ornamentations Box, tank, and other equipment configurations

34 Tools/Attachments on vehicles can create greater blind spots, reduce visibility, or swings that increases the risk to workers being struck or pinned. Watch out for heavy equipment moving with raised buckets Be ready for possible sudden movements of booms or changes in direction of equipment operation Know equipment swing radius (how far can it reach, move or rotate)

35  Do not cross directly in front of or immediately behind large heavy equipment or trucks where the operator sits higher in the vehicle.  Communicate with an operator (verbally and/or by eye contact) before entering any area near heavy equipment or large trucks.  If you have to stand near parked equipment or trucks, stand in front or on operator side so if equipment comes into use, the operator can see you and you can see them. How can you protect yourself when working near heavy equipment? Courtesy of Construction Safety Association of Ontario

36 If employees are in the backing zone or it is reasonable to expect that employees will enter the backing zone behind a dump truck, then ensure that: AND An observer who signals when it is SAFE to back up or stop The vehicle has an operable automatic reverse signal alarm which is audible above surrounding noise level; and Courtesy of Construction Safety Association of Ontario





41  Ensure TTC is set up properly and according to MUTCD guidelines.  Reassess your TTC often  Ensure ITCP is in place and communicated to all employees  Ensure employees understand vehicle blind spots  Keep backing of vehicles to a minimum

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