Exam (elaborations)
IMSA LEVEL 1 CERTIFICATION QUESTIONS AND ANSWERS
- Course
- Institution
IMSA LEVEL 1 CERTIFICATION QUESTIONS AND ANSWERS
[Show more]
Content preview
IMSA LEVEL 1 CERTIFICATION QUESTIONS ANDANSWERS
Where are you when you install alternating flashing 12" red lights? - Answers-At a
railroad crossing.
Who determins the the standards on traffic control devices and sets the requirements
for uniformity? - Answers-The Manual on uniform traffic control devices, (MUTCD).
What is the the voltage that a traffic signal cabinet needs to run all its components? -
Answers-120 volts AC
What is the difference between concurrent and sequential phases? - Answers-
Concurrent phases, phases that run together. Sequential phases, are phases that run
one at a time.
I have a dual ring controller and all my through phases are even, what do I mean? -
Answers-The dual ring phases are 2,4,6,8
What is the cheapest way to coordinate a corridor of signals? What needs to stay the
same throughout the day? - Answers-Time based coordination, and cycle length.
Explain the white walking man, the flashing orange hand on a ped head and how is this
time figured? - Answers-The white walking man is the ped head walk interval, and the
ped change clearance interval is the flashing orange hand.
What makes up the green interval? - Answers-Initial green time, passage/extension/gap
time, and max green time.
At most intersections what are phases 2,6 called, and phases 4,8 called - Answers-
Phases 2,6 are called Main Street, and 4,8 are called side street.
Name the three traffic signal systems? - Answers-Closed loop, central computer, hybrid
systems.
If phase 2 is in recall what will the controller do? - Answers-The controller will service
that phase even if there is no need for it.
What happens after the green interval and before the red interval, and how is this
change interval figured? - Answers-Yellow interval, and is figured by using the approach
speed of the traffic.
What is an offset? - Answers-The time it takes from the start of the green interval in a
coordination timed intersection and a system reference point along side the road.
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 GEEKA. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $9.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
81113 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now