ATSSA Traffic Control Supervisor Re-certification -With 100% verified solutions 2024-2025, Exams of Advanced Education

Download ATSSA Traffic Control Supervisor Re-certification -With 100% verified solutions 2024-2025 and more Exams Advanced Education in PDF only on Docsity! ATSSA Traffic Control Supervisor Re- certification -With 100% verified solutions 2024- 2025 100' Recommended Advanced Warning Sign Spaceing: Urban (low speed) 350' Recommended Advanced Warning Sign Spaceing: urban (high speed) 500' Recommended Advanced Warning Sign Spaceing: Rural 1000', 1500', and 2640' Recommended Advanced Warning Sign Spaceing: freeways and expressways (3) 1 Mile 50% shoulder at beginning of taper if possible, if not, as close to beginning as possible inside taper. Arrow board visibility distance by design: Written by studybu ddy night time dimming: location: taper: not to exceed distance in feet = to posted speed limit tangent: distance = double posted speed limit device spacing taper: tangent: A: Low intensity flashing B: High-intensity flashing C: Steady Burn D: 360° steady burn Warning lights types: Type A: Type B: Type C: Type D: Uses for portable changeable message sign PCMS speed drops significant delays adverse conditions advance notice of closures advance notice of road changes reinforce static signage updated guidance information concrete, water-filled, anchored, move-able, mobile, steel types of temporary traffic barriers Light in color and supplemented with standard delineation or pavement markings If Temporary Traffic Barriers are used as channelizing devices they should be: Appropriately flared or protected with properly installed crash cushions The blunt end of a barrier is a hazard. ALL upstream leading ends shall be: 20:1 Typical Flare Rates for Barrier Rail - 70 MPH 18:1 Typical Flare Rates for Barrier Rail - 60 MPH Decrease by 2:1 per 5 MPH stopping at 30 MPH with 8:1 Below 60 MPH Barrier Flare Rates Decrease by The exposed end is outside the clear zone Extend Barrier Rail Flare until The edge of the TRAVELED lane Typically 30' for High-speed facilities Clear Zone is measured from, and is how far channel pin and loop (to be phased-out) types of barrier connections Stationary non-redirective (inertial) Impact Attenuators Sand barrels are an example of what? Re-direct vehicles that impact them Re-directive Impact Attenuators do what? Decelerate the vehicle to a stop stationary non-redirective Impact Attenuators do what? Minimum of 30" Impact Barrels should overlap the fixed object on the traffic side by: Stationing 0+00' A conventional way of identifying distances on the plan and on the ground. Located every hundred feet. Cones at least 28" with 2 white retroreflective bands flaggers properly illuminater controlled glare proper apparel (recommended class 3) Nighttime checklist 60" Proper width for pedestrian pathway: provide a 60"x60" passing area for wheelchairs every 200' When it is not possible to maintain proper pathway width provide what? temporary traffic barriers If significant threat of vehicle incursions into temporary pedestrian pathways _________ should be installed. 2 or 3 All workers, including emergency responders, within the right-of-way who are exposed either to traffic (vehicles using the highway for purposes of travel) or to work vehicles and construction equipment