Index
Sr no. Title Page no.
1 Introduction 2
2 Purpose 3
Scope 3
3
Definition 3
4
5 Overview 4
6 Product feature 4
7 Functional
requirements 4
8 Non Functional 6
requirements
9 Conclusion 7
10 Process model 7
11 7
User characteristics
12 7
General constant
13 Assumption and 8
Dependency
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Data flow diagram 8
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15
Use case diagram 10
16
Traffic signal dictionary 10
17
Cost estimation 11
18
Risk table 12
19 Timeline 13
20
Architecture design 14
21
Testing 15
22
Decision table 16
23
Reference 16
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• Introduction
• Traffic signals are one of the most effective and flexible active control of traffic
and is widely used in several cities worldwide.
• The conflicts arising from movements of traffic in different directions are
addressed by time sharing principle.
• Traffic signals are traffic signs that are displayed at the intersection for guiding the
movement of the vehicles on roads.
• The purpose of traffic signals is to maintain complete order and to avoid fatal
incidents on roads.
• The traffic signal works on light signals and includes three colors: red, yellow and green.
• Purpose
Traffic signals exist to control the flow of traffic in one way or another.
The extended purpose, then, is to increase safety, manage traffic and travel times, and
provide direction for drivers.
•Scope
Traffic signals are designed to ensure an orderly flow of traffic, provide an opportunity for
pedestrians or vehicles to cross an intersection and help reduce the number of conflicts between
vehicles entering intersections from different directions.
•Definition
Traffic signals are one of the most effective and flexible active control of traffic and is
widely used in several cities worldwide. The conflicts arising from movements of traffic in
different directions are addressed by time sharing principle.
• •Overview
The signal design procedure involves six major steps. They include:
• phase design,
• determination of amber time and clearance time,
• determination of cycle length,
• apportioning of green time,
• pedestrian crossing requirements, and
• performance evaluation of the design obtained in the previous steps
• Product Features
Traffic flow modeling
Signal timing optimization
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Intersection control strategies (e.g., fixed-time control, actuated control, adaptive
control, coordinated control)
Simulation capabilities
Integration with traffic management systems
User-friendly interface
Scalability and performance optimization
• Functional Requirements
Traffic Flow Modeling
The software shall allow users to input parameters such as road layout, intersection
geometry, vehicle types, and traffic volume for traffic flow modeling.
The software shall use mathematical models to simulate traffic flow patterns based on
input parameters.
Signal Timing Optimization
The software shall optimize signal timing plans to minimize congestion, reduce delays,
and improve traffic flow efficiency.
Optimization algorithms such as genetic algorithms, neural networks, or dynamic
programming shall be employed for signal timing optimization.
Intersection Control Strategies
The software shall support various intersection control strategies including fixed-time
control, actuated control, adaptive control, and coordinated control.
Simulation and Visualization
The software shall provide simulation capabilities to allow users to evaluate different
signal timing plans and intersection configurations.
Visualization tools such as 3D models, graphs, and heatmaps shall be provided to aid in
the analysis of simulated traffic behavior.
Integration with Traffic Management Systems
The software shall integrate with existing traffic management systems or hardware to
communicate with on-site equipment for implementing optimized signal timing
plans.
User Interface
The software shall have a user-friendly interface with intuitive tools for inputting traffic
data, configuring intersection parameters, running simulations, and analyzing results.
Scalability and Performance
The software shall be scalable to handle simulations of large-scale traffic networks with
multiple intersections and road segments.
Performance optimizations shall be implemented to provide fast simulation results and
real-time responsiveness.
3.2 Non-Functional Requirements
Safety and Reliability
The software shall undergo rigorous testing and validation to ensure safety and
reliability in traffic signal control.
Regulatory Compliance
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The software shall comply with relevant traffic regulations and standards set by
transportation authorities.
Documentation and Support
Comprehensive documentation and user support shall be provided to assist users in
utilizing the software effectively.
Usability
The software shall have an intuitive and user-friendly interface to facilitate ease of use
for traffic engineers.
Performance
The software shall perform efficiently, providing fast simulation results and real-time
responsiveness.
• Non-Functional Requirements
Safety and Reliability
The software shall undergo rigorous testing and validation to ensure safety and
reliability in traffic signal control.
Regulatory Compliance
The software shall comply with relevant traffic regulations and standards set by
transportation authorities.
Documentation and Support
Comprehensive documentation and user support shall be provided to assist users in
utilizing the software effectively.
Usability
The software shall have an intuitive and user-friendly interface to facilitate ease of use
for traffic engineers.
Performance
The software shall perform efficiently, providing fast simulation results and real-time
responsiveness.
• Conclusion
This Software Requirements Specification (SRS) document outlines the functional
and non-functional requirements for the development of a traffic signal control
design software. By adhering to these requirements, the software aims to provide
traffic engineers with effective tools for optimizing signal timing and managing
traffic flow.
• Process model-
For this project we have used agile process model.
The meaning of Agile is swift or versatile. “Agile process model" refers to a software
development approach based on iterative development. Agile methods break tasks into smaller
iterations, or parts do not directly involve long term planning. The project scope and
requirements are laid down at the beginning of the development process. Plans regarding the
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number of iterations, the duration and the scope of each iteration are clearly defined in
advance.
Each iteration is considered as a short time "frame" in the agile process model, which
typically lasts from one to four weeks. The division of the entire project into smaller parts
helps to minimize the project risk and to reduce the overall project delivery time requirements.
Each iteration involves a team working through a full software development life cycle
including planning, requirements analysis, design, coding, and testing before a working
product is demonstrated to the client.
• User Characteristics
Physical factors: Vision, hearing, strength and general reactions to traffic
situations. Mental factors: Knowledge, skill, intelligence, experience and literacy.
•General Constraint
The signal design procedure involves six major steps. They include:
• phase design,
• determination of amber time and clearance time,
• determination of cycle length,
• (4) apportioning of green time,
• Assumption & Dependency
Assumptions provide a foundation for project planning and decision-making, while risks,
issues, constraints, dependencies are factors that can impact the project's progress, execution,
and outcomes.
Data Flow Diagram
DFD LEVEL LEVEL0:
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DFD LEVEL LEVEL1:
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DFD LEVEL LEVEL2:
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• Use case diagram—
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•Traffic Signal Dictionary
One of a set of red, yellow, and green lights that control the movement of vehicles, usually at a
point where two or more roads join: The police pulled him over for failing to stop at a traffic
light
The signal design
procedure involves six
major steps.
They include:
• phase design,
• determination of amber time and clearance time,
• determination of cycle length
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• Cost estimation-
Function Point Analysis (FPA) is a method used for estimating the size and complexity of
software development projects based on the functionality provided by the software. It involves
quantifying the functionality of the software in terms of function points, which are then used to
estimate effort, cost, and schedule. Here's how you might apply function point estimation to the
traffic signal control design software project:
Identify Functionality:
Identify the various functions or features that the traffic signal control design software will
provide. This could include traffic flow modeling, signal timing optimization, intersection
control strategies, simulation capabilities, integration with traffic management systems, user
interface, documentation, and support.
Classify Functions:
Classify each function into one of the following categories defined by the Function Point
Analysis:
External Inputs (EI): Inputs from external sources that update the internal logical files or modify
the behavior of the software.
External Outputs (EO): Outputs sent to external sources based on processed data from internal
logical files.
External Inquiries (EQ): Queries or requests for information from external sources.
Internal Logical Files (ILF): Internally maintained files that store data used and maintained by
the software.
External Interface Files (EIF): Files used by the software but maintained by external
applications.
Assign Complexity Weights:
Assign complexity weights to each function based on factors such as data complexity, processing
complexity, and user interface complexity. Complexity weights typically range from low to high.
Calculate Function Points:
Calculate the function points for each category by multiplying the number of functions in each
category by their respective complexity weights and summing the results.
Adjust for Environmental Factors:
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• Risk table-
• Timeline:
Phase 1: Planning and Requirements
Duration: 2 weeks
Project Kickoff:
Hold a kickoff meeting to establish project goals and objectives.
Requirements Gathering:
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Meet with stakeholders to gather high-level requirements and define project
scope.
Risk Assessment:
Identify potential risks and develop initial mitigation strategies.
Phase 2: Design and Development
Duration: 6 weeks
System Architecture Design:
Define the overall architecture of the software.
Algorithm Design:
Design algorithms for traffic flow modeling and signal timing optimization.
Core Functionality Development:
Implement core functionality for traffic flow modeling and signal timing.
Phase 3: Testing and Deployment
Duration: 4 weeks
• Architecture Design
Architectural design is the designing and planning of structures where functionality and
aesthetics are the two key elements of the process.
The design must be suitable for the experience of the user as well as meet the needs of the
client and or project requirements.
Designing a traffic control system involves various components and considerations.
Here's a simplified overview of the process: Traffic Analysis: Begin by analyzing traffic
patterns, volume, and peak hours at the target location. This data helps determine the system's.
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• Testing-
Software testing is the process of assessing the functionality of a software program. The process
checks for errors and gaps and whether the outcome of the application matches desired
expectations before the software is installed and goes live.
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Decision table:
Reference
• https://www.smarttrafficcontrol.com
• https://www.datasciencetoolsuite.com
• https://www.healthcareinformaticsplatform.com
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