Transportation Planning and Analysis

6.

Transportation System Performance Analysis

6.1.

Traffic Flow Theory

6.1.1.

Fundamental Traffic Flow Relationships

6.1.1.1.

Speed-Flow-Density Relationships

6.1.1.2.

Fundamental Diagram

6.1.1.3.

Traffic Flow Regimes

6.1.2.

Microscopic Traffic Flow

6.1.2.1.

Car-Following Models

6.1.2.2.

Lane-Changing Models

6.1.3.

Macroscopic Traffic Flow

6.1.3.1.

Continuum Flow Models

6.1.3.2.

Shockwave Theory

6.1.4.

Mesoscopic Traffic Flow

6.1.4.1.

Gas-Kinetic Models

6.1.4.2.

Cellular Automata Models

6.2.

Capacity Analysis

6.2.1.

Highway Capacity Manual Methodology

6.2.2.

Freeway Capacity Analysis

6.2.2.1.

Basic Freeway Segments

6.2.2.2.

Weaving Sections

6.2.2.3.

Merge and Diverge Areas

6.2.3.

Arterial Capacity Analysis

6.2.3.1.

Signalized Intersections

6.2.3.2.

Unsignalized Intersections

6.2.3.3.

Arterial Segments

6.2.4.

Transit Capacity Analysis

6.2.4.1.

6.2.4.2.

6.2.4.3.

Station and Stop Capacity

6.3.

Level of Service Analysis

6.3.1.

Level of Service Concepts

6.3.2.

Freeway Level of Service

6.3.2.1.

Density-Based LOS

6.3.2.2.

Speed-Based LOS

6.3.3.

Arterial Level of Service

6.3.3.1.

Travel Speed Method

6.3.3.2.

Percent Time Spent Following

6.3.4.

Intersection Level of Service

6.3.4.1.

Control Delay Method

6.3.4.2.

Volume-to-Capacity Ratio

6.3.5.

Transit Level of Service

6.3.5.1.

Service Frequency

6.3.5.2.

Service Reliability

6.3.5.3.

Passenger Comfort

6.3.6.

Pedestrian Level of Service

6.3.6.1.

6.3.6.2.

6.3.7.

Bicycle Level of Service

6.3.7.1.

6.3.7.2.

Shared Roadway LOS

6.4.

Travel Time and Reliability Analysis

6.4.1.

Travel Time Measurement

6.4.1.1.

Average Travel Time

6.4.1.2.

Travel Time Distributions

6.4.2.

Reliability Measures

6.4.2.1.

Travel Time Index

6.4.2.2.

6.4.2.3.

Planning Time Index

6.4.3.

Reliability Analysis Methods

6.4.4.

Factors Affecting Reliability

6.5.

Safety Performance Analysis

6.5.1.

Crash Data Analysis

6.5.1.1.

Crash Data Sources

6.5.1.2.

Crash Data Quality

6.5.1.3.

Crash Severity Classification

6.5.2.

Safety Performance Measures

6.5.2.1.

6.5.2.2.

Crash Frequency

6.5.2.3.

Severity Indices

6.5.3.

Crash Prediction Models

6.5.3.1.

Safety Performance Functions

6.5.3.2.

Crash Modification Factors

6.5.4.

Network Screening Methods

6.5.5.

Before-After Safety Analysis

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