Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Predicting Products: Substitution vs. Elimination02:52

Predicting Products: Substitution vs. Elimination

14.8K
When a nucleophile and an alkyl halide react, nucleophilic substitution and β-elimination reactions compete to generate products.
The following factors can influence the mechanisms competing against each other:
14.8K
Modeling of Diode Forward Characteristics01:19

Modeling of Diode Forward Characteristics

1.1K
Understanding the behavior of diodes when forward-biased is a fundamental aspect of electronic circuit design and analysis. This analysis primarily utilizes two models: the exponential diode model and the constant-voltage-drop model. The exponential model comes into play when the source voltage exceeds 0.5 volts, pushing the diode current to rise exponentially above the saturation current. This relationship is graphically depicted in the current-voltage (I-V) curve, illustrating the diode's...
1.1K
Modeling of Diode Reverse Characteristics01:14

Modeling of Diode Reverse Characteristics

626
In electronic circuits, reverse-biased diode configurations are critical for regulating voltage levels. Zener diodes exploit the reverse breakdown phenomenon and exhibit a controlled breakdown at a specific Zener voltage (VZ). They are designed to maintain a constant voltage across their terminals and are commonly used for voltage regulation in circuits.
When a reverse voltage applied to a Zener diode exceeds its breakdown voltage, the diode enters the breakdown region. At this point, the...
626
Characteristics of Life01:23

Characteristics of Life

262.0K
Biology is a natural science that studies life and living organisms, including their structure, function, development, interactions, evolution, distribution, and taxonomy. The field's scope is extensive and divided into several specialized disciplines, such as anatomy, physiology, ethology, genetics, and many more. All living things share a few key traits, including cellular organization, heritable genetic material and the ability to adapt/evolve, metabolism to regulate energy needs, the...
262.0K
Predicting Molecular Geometry02:27

Predicting Molecular Geometry

46.0K
VSEPR Theory for Determination of Electron Pair Geometries
46.0K
Trigonometric Substitution01:23

Trigonometric Substitution

73
Trigonometric substitution is a technique used to simplify integrals that contain square root expressions involving quadratic forms. It is particularly effective when the integrand includes terms resembling those found in standard geometric equations, such as circles or ellipses.Molniya satellites follow highly elliptical orbits, repeatedly sweeping out the same regions of space as they revolve around Earth. To estimate the area enclosed by such an orbit, the path is modeled as an ellipse...
73

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

EXPRESSION OF SEROTONIN RECEPTOR SUBTYPE 3A (5HT3A) ON RAT TRIGEMINAL SENSORY NEURONS.

Texas journal of microscopy·2023
Same author

Estimating the effect of vehicle speeds on bicycle and pedestrian safety on the Georgia arterial roadway network.

Accident; analysis and prevention·2021
Same author

Cytomegalovirus pneumonitis-induced secondary hemophagocytic lymphohistiocytosis and SIADH in an immunocompetent elderly male literature review.

IDCases·2020
Same author

MOVES-Matrix for high-performance on-road energy and running emission rate modeling applications.

Journal of the Air & Waste Management Association (1995)·2019
Same author

The prevalence of gastroesophageal reflux disease in an adult, South African black population, and the association with obesity.

Minerva gastroenterologica e dietologica·2018
Same author

Understanding the emission impacts of high-occupancy vehicle (HOV) to high-occupancy toll (HOT) lane conversions: Experience from Atlanta, Georgia.

Journal of the Air & Waste Management Association (1995)·2017

Related Experiment Video

Updated: Feb 6, 2026

An Experimental Paradigm for the Prediction of Post-Operative Pain PPOP
14:56

An Experimental Paradigm for the Prediction of Post-Operative Pain PPOP

Published on: January 27, 2010

22.1K

Can post encroachment time substitute intersection characteristics in crash prediction models?

Lakshmi N Peesapati1, Michael P Hunter2, Michael O Rodgers2

  • 115634 Main Street Bellevue, WA 98008, United States.

Journal of Safety Research
|August 20, 2018
PubMed
Summary

Post Encroachment Time (PET) effectively predicts left-turn crashes when combined with traffic volume. This surrogate safety measure offers a more efficient alternative to traditional crash data analysis for road safety evaluations.

More Related Videos

Predictive Immune Modeling of Solid Tumors
08:50

Predictive Immune Modeling of Solid Tumors

Published on: February 25, 2020

7.6K
Exploring Caspase Mutations and Post-Translational Modification by Molecular Modeling Approaches
05:56

Exploring Caspase Mutations and Post-Translational Modification by Molecular Modeling Approaches

Published on: October 13, 2022

1.8K

Related Experiment Videos

Last Updated: Feb 6, 2026

An Experimental Paradigm for the Prediction of Post-Operative Pain PPOP
14:56

An Experimental Paradigm for the Prediction of Post-Operative Pain PPOP

Published on: January 27, 2010

22.1K
Predictive Immune Modeling of Solid Tumors
08:50

Predictive Immune Modeling of Solid Tumors

Published on: February 25, 2020

7.6K
Exploring Caspase Mutations and Post-Translational Modification by Molecular Modeling Approaches
05:56

Exploring Caspase Mutations and Post-Translational Modification by Molecular Modeling Approaches

Published on: October 13, 2022

1.8K

Area of Science:

  • Transportation Engineering
  • Traffic Safety Analysis
  • Road Safety Evaluation

Background:

  • Traditional transportation safety analysis relies on crash data, which has limitations in timeliness and efficiency.
  • Surrogate safety measures offer an alternative for evaluating road safety with reduced data collection efforts.
  • Post Encroachment Time (PET) is a surrogate measure representing the time between vehicles in conflict areas.

Purpose of the Study:

  • To evaluate the effectiveness of Post Encroachment Time (PET) in predicting crashes involving left-turning and opposing through vehicles.
  • To determine if PET can serve as a reliable surrogate for estimating opposing left-turn crashes.

Main Methods:

  • The study utilized Post Encroachment Time (PET) as a surrogate safety measure.
  • PET values were analyzed to assess their correlation with crash occurrences.
  • Models were developed combining PET with traffic volume characteristics (AADT or conflicting volume).

Main Results:

  • A model combining PET and traffic volume demonstrated superior predictive power compared to using PET alone.
  • PET was found to implicitly capture the influence of other intersection characteristics on safety.
  • Adding parameters like sight distance and grade to the model yielded only marginal improvements, increasing complexity without significant benefit.

Conclusions:

  • PET, particularly when integrated with traffic volume data, is a valuable tool for predicting specific types of intersection crashes.
  • This approach offers a more efficient and potentially more accurate method for road safety assessment than relying solely on historical crash data.
  • The findings suggest that PET-based models can simplify safety analysis by reducing the need for extensive intersection-specific data.