Exam (elaborations)
ATSSA Traffic Control Supervisor Re-certification questions with correct answers
- Course
- Institution
ATSSA Traffic Control Supervisor Re-certification questions with correct answers
[Show more]
Seller
Follow
Victorious23
Reviews received
Content preview
ATSSA Traffic Control Supervisor Re-certification questions with correct
answers
L=(WS²)/60 for 40MPH or less,
L=WS for 45MPH or more - -Formula for Min. taper length
-The off peak 85th percentile. Which is the speed at or below which 85% of
vehicles travel operating speed in free flow conditions - -speed used in
formulas should be
-125' - -Distance of L for 25 MPH with 12' Lane width
-245' - -Distance of L for 35 MPH with 12' Lane width
-540' - -Distance of L for 45 MPH with 12' Lane width
-660' - -Distance of L for 55 MPH with 12' Lane width
-780' - -Distance of L for 65 MPH 12' Lane width
-L Minimum - -Merging Taper Length
-1/2 L Minimum - -Shifting Taper Length
-1/3 L Minimum - -Shoulder Taper Length
-50'-100' regardless of speed
6 devices 10'-20' apart - -One-Lane, Two-Way Taper (Flagger taper) Length
and number of devices
-50'-100' per lane - -Downstream taper Length
-2L - -Tangent distance (between tapers)
-1/2L - -Tangent distance before shifting taper
-Buffer Space
Work Space
Traffic Space - -Activity Area Sub-components (3)
-Recovery Area for errant vehicles: Forgiving design
Protects workers and Motorists
Always completely empty or clear
, No vehicles, truck-mounted attenuator, equipment, or materials
STRONGLY RECOMMENDED: unless there is a documented reason not to - -
Longitudinal Buffer Space
-Where road users are returned to their normal path
extends from the downstream end of the work area to the last device such
as end work zone sign
May contain:
end work zone sign: usually 500' past last device
downstream taper = 50'-100' per lane - -Termination Area is:
can contain: (2)
-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:
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
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller Victorious23. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $8.49. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
77254 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now