Review: Study Questions
Section: Basics of Modern Traffic Signals
ESSENTIAL QUESTIONS:
- What does "near-lane-parallel traffic" mean, and why is it so important to know? (Review)
- When you have concerns or questions about a signalized crossing, what should you do? (Review)
- What is a signal cycle? (Review)
- What is a signal timing plan, and how does it work? (Review)
- What does a flashing "DON'T WALK" mean on the pedestrian signal, and what does it NOT mean? (Review)
Section: Actuation
ESSENTIAL QUESTIONS:
- At actuated signals, what do pedestrians need to do to help ensure that they have adequate time to cross? (Review)
- What are actuated signals? (Review)
- What are pre-timed signals? (Review)
- How are vehicles detected at actuated signals? (Review)
- How are pedestrians detected at actuated signals? (Review)
- What is the typical timing for actuated signals? (Review)
Section: Signalized traffic patterns for vehicles
ESSENTIAL QUESTIONS:
- With modern traffic signal patterns, what is the most reliable way for pedestrians to have the WALK signal (giving them the right of way to cross)? (Review)
- Which traffic movement has the most potential conflict with other vehicles? (Review)
- With "split phasing," what is the traffic pattern? (Review)
- Which traffic movement on the parallel street does not allow pedestrians to cross? (Review)
- How difficult is it for traffic engineers to temporarily change the timing pattern for signals? (Review)
Section: Pedestrian signals and pushbuttons
ESSENTIAL QUESTIONS:
- How can pedestrians be assured enough time to cross? (Review)
- How can pedestrians press the pushbutton to maximize being able to predict when the WALK signal begins? (Review)
What are the exceptions to this rule? (Review)
- If there are no pedestrian pushbuttons, can we assume that pedestrians will get a green signal long enough to cross? (Review)
- In the United States, do white cane laws make it unnecessary for blind pedestrians to use pedestrian pushbuttons and WALK signals? (Review)
- What does the flashing "DON'T WALK" signal mean? (Review or Review)
- What is the primary benefit of Leading Pedestrian Intervals? (Review)
What can happen if there is a Leading Pedestrian Interval without an Accessible Pedestrian Signal? (Review)
- How soon after the pedestrian pushbutton is pressed can we expect the WALK signal to come on? (Review)
Section: Strategies for Visually Impaired Pedestrians at Modern Signals
ESSENTIAL QUESTIONS:
- What are the three key principles blind pedestrians should understand for crossing at modern signals? (Review)
- What should pedestrians do at actuated signals to ensure adequate time to cross? (Review)
- If you miss the appropriate crossing opportunity, what should you do before trying to cross? (Review)
- What are some strategies blind pedestrians can use to find the pedestrian pushbutton? (Review)
- What are the reasons for pressing the pushbutton a certain way to maximize being able to predict when the WALK signal begins? (Review)
- What are some of the problems that may be encountered when trying to press the pushbutton at the right time, and what could be a solution? (Review)
- Why is alignment a problem when using a pedestrian pushbutton, and what can be done to address the problem? (Review)
- What is the recommended sequence that blind pedestrians can use for crossing unfamiliar signalized intersections? (Review)
How much of the recommended sequence is needed for familiar crossings? (Review)
Section: Risks: Assessment and Mitigation, Decisions and Alternatives
- What are the sources of danger when crossing signalized intersections? (Review)
What are some strategies that can help reduce the risks of those dangers? (Review)
- What could happen if there is no pedestrian pushbutton? (Review)
What can traffic engineers do with the signal timing to mitigate the problem of having no pedestrian button? (Review)
- What are some of the problems people with visual impairment have had with scanning for vehicles while crossing? (Review)
- What are some strategies that can make drivers more likely to yield? (Review)
- What 3 factors can help determine how likely you are going to be seriously injured or killed while crossing? (Review)
- What are some alternatives that can be considered when the risk of crossing is not acceptable? (Review)
Section: Accessible Pedestrian Signals
- What are the features of Accessible Pedestrian Signals (APS)? (Review)
- When there are APS for both crosswalks at a corner, how should they be positioned to help pedestrians distinguish which crosswalk their signal is for? (Review)
- Where this position is not feasible, what should be done to help distinguish which crosswalk each signal is for? (Review)
- What is a suggested procedure for requesting APS? (Review)
- What are some optional features that can be programmed into some modern APS? (Review)