ATSSA TCS Module 5 Positive Protection Devices questions with verified solutions

Positive Protection Devices Contains and redirects vehicles in accordance with National Cooperative Highway Research Program NCHRP Report 350 preventing their intrusion into the work space. NCHRP Report 350 testing requirements FHWA requires that all TCD must meet crashworthy performance criteria contained in NCHRP Report 350 now being replaced by MASH Previous Play Next Rewind 10 seconds Move forward 10 seconds Unmute 0:00 / 0:15 Full screen Brainpower Read More MASH = Manual Assessing Safety Hardware is replacing FHWA Report 350. MASH is not mentioned in MUTCD How do you know they are Crashworthy devices? Met test evaluation of Report 350/MASH and/or Received an "Eligibility letter" from FHWA MASH category 4 Devices: Trailer mounted devices heavier than 100 pounds: 1Area lighting units 2Arrow boards 3Temporary signals 4Radar speed display trailers. Should be moved outside clear zone or be shielded by a barrier or crash cushion WHEN NOT IN USE. Should be delineated WHEN IN USE. Temporary Traffic Barriers are Portable devices to prevent penetration by vehicles while minimizing injuries to vehicle occupants. Provide positive protection to: 1workers,2bicyclists, 3pedestrians,4Hazards/drop-offs Types of Temporary Traffic Barriers 1 Concrete, 2 Water-filled 3 Steel, 4 Anchored, 5 Mobil, 6 Movable Use of Temporary Traffic Barriers Should be crashworthy, installed and used based on an engineering study design in accordance with AASHTO. MAIN function of Traffic Barriers PROTECTION, secondarily, CHANNELIZATION or delineation. Do not use if not needed for protection. Barricades are channelizing devices Types 1,2,3. A longitudinal channelizing device (LCD) 1 Do not contain or redirect a vehicle 2 Do not prevent vehicle intrusions 3 NOT A POSITIVE PROTECTION DEVICE but provide continuous detectable edging. Portable Concrete Barriers PCB Most common, self-standing, F-shape, Top 9", not 6" as Jersey Shape, Deflection= 2ft up to 45 mph