Intelligent Transportation Systems (ITS) Flashcards
6 cards from real CTE practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 Intelligent Transportation Systems (ITS) flashcards as text
What is the primary purpose of a Traffic Management Center (TMC) in an ITS context?
Answer: To monitor, manage, and coordinate traffic flow across a transportation network using surveillance and control technologies
A TMC serves as the operational hub for ITS, monitoring traffic conditions through cameras and sensors, managing incidents, coordinating agency response, and disseminating traveler information in real time.
What is DSRC (Dedicated Short-Range Communications) used for in connected vehicle applications?
Answer: Short-range wireless communication between vehicles and infrastructure (V2X) for safety and mobility applications
DSRC uses the 5.9 GHz band for low-latency, short-range (up to ~1,000m) vehicle-to-vehicle (V2V) and vehicle-to-infrastructure (V2I) communication to support safety applications like intersection collision warning.
What does 'adaptive signal control technology' (ASCT) do differently from pre-timed or actuated signal systems?
Answer: It continuously adjusts signal timing plans in real time based on detected traffic conditions to minimize delay
ASCT systems like InSync, SynchroGreen, and SCATS use real-time traffic detection to dynamically adjust cycle lengths, phase splits, and offsets — optimizing progression and reducing stops and delay across intersections.
What is a 'Dynamic Message Sign' (DMS) and what ITS function does it serve?
Answer: A changeable LED sign used to display real-time traveler information such as travel times, incidents, and road conditions to motorists
Dynamic Message Signs (DMS) are electronically controlled roadside signs that display real-time information — travel times, incidents, weather alerts, AMBER alerts — helping motorists make informed route and departure decisions.
What is the SAE J3016 standard related to in the context of automated vehicles?
Answer: Taxonomy and definitions for levels of driving automation (Levels 0–5)
SAE J3016 defines six levels of driving automation (0=no automation to 5=full automation) based on who or what performs the dynamic driving task and when a human driver must be ready to intervene.
What is the purpose of the US DOT's National ITS Architecture?
Answer: A framework defining ITS services, stakeholders, physical components, and communications to guide interoperable ITS deployments nationwide
The National ITS Architecture (ARC-IT) provides a common framework of services, functions, and interfaces to enable interoperable ITS systems across agencies and jurisdictions, guiding local regional ITS architecture development.