Table of Contents

1 Introduction
1.1 Background
1.2 Introduction to Research Status Worldwide
1.2.1 Vehicle Dynamic Characteristics at High Altitude
1.2.2 Psycho-physiological Characteristics of Drivers in High Altitude Areas
1.2.3 Characteristics of Freeway Traffic Operation in High-Altitude Areas
1.2.4 Geometric Technical Indicators of Freeway Routes in High Altitude Areas
1.3 Main Research Contents
1.3.1 Research on Vehicle Performance and Driving Behavior in Low Pressure and Oxygen Deficient Environment
1.3.2 Research on Traffic Features and Speed Control of Freeways in Qinghai-Tibet Plateau Region
1.3.3 Research on Main Technical Indicators of Freeway Alignment in Low Pressure and Oxygen DeficientEnvironment
1.3.4 Study on Technical Standards and Design Guidelinesfor Qinghai-Tibet Freeway
1.4 Technical Difficulties and Research Methods
1.5 Scientific and Technological Achievements and Innovation
1.6 Application of Results
1.7 Economic and Social Benefits
2 The Characteristics of Traffic Operation in High Altitude Areas
2.1 Characteristics of Traffic Accidents in Special High AltitudeEnvironments
2.1.1 Basic Data on Traffic Accidents
2.1.2 The Indicators and Methods of Traffic Accident Analysis
2.1.3 General Distribution Characteristics of Traffie Accidents
2.1.4 Characteristics of the Relationship Between Traffic Accidents and People, Vehicles, Roads and the Environment
2.2 The Characteristics of the Traffic Flow in Special High Altitude Environment
2.2.1 Basic Data Collection
2.2.2 Traffic Volume and Composition
2.2.3 Analysis of Traffic Flow Features
2.3 Traffic Safety Service Level in High Altitude Areas
2.3.1 Determination of Road Segmentation Method
2.3.2 Analysis of Traffic Accident Influencing Factors
2.3.3 Regional Highway Accident Prediction Model
2.3.4 General Distribution Characteristics of Traffic Accidents
2.3.5 Traffic Safety Service Level of Secondary Highway
2.3.6 Preliminary Study on Freeway Traffic Safety Service Level
3 Dynamic Features of Typical Vehicles Under Low Pressure and Oxygen Deficient Environment in High Altitude Areas
3.1 Vehicle Types and Methods for Testing
3.1.1 Vehicle Types for Testing
3.1.2 Test Method
3.1.3 Test Site and Environmental Conditions
3.2 Principles of Vehicle Dynamics in Plateau Areas
3.2.1 Principles of Vehicle Driving Dynamics
3.2.2 Principle of Vehicle Driving Resistance
3.2.3 Altitude-Based Power and Resistance Discounting Principle
3.3 External Characteristics of Engine
3.3.1 Test and Calculation Process of Engine External Characteristics
3.3.2 Comparison of Engine External Characteristics at Different Altitudes
3.3.3 Analysis of Engine Torque Reduction Coefficient
3.4 Engine Braking Characteristics
3.4.1 Engine Braking Characteristic Test and Calculation Process
3,4.2 Comparison of Engine Braking Characteristics at Different Altitudes
3.4.3 Analysis of Engine Braking Torque Reduction Coefficient
4 Characteristics of Psychophysiological Change of Drivers in the Low Pressure and Oxygen Deficient Environment in High Altitude Area
4.1 Drivers' Perception and Operation Ability in Low Oxygen Environment
4.1.1 Test Plan Design
4.1.2 Change Characteristics of Drivers' Reaction Ability
4.1.3 Changing Characteristics of Drivers' Heart Rate Under Complex Linear Conditions
4.1.4 Driver Heart Rate Change Model Under Complex Linear Conditions
4.2 Fatigue Characteristics of Drivers in Low Oxygen Environment
4.2.1 Test Plan Design
4.2.2 Fatigue Characteristics of Driving at Different Altitudes
4.2.3 Fatigue Model When Driving at Different Altitudes
5 Operating Speed Model of Freeway in High Altitude Areas
5.1 Representative Model
5.1.1 Representative Model of Passenger Cars
5.1.2 Repr