Highway Research Board (HRB) Classification System

The correct answer is option 'B', Public Road Administration (PRA) system.

The Highway Research Board (HRB) Classification System, also known as the Public Road Administration (PRA) system, is a classification system used for categorizing highways based on their functional and administrative characteristics. This system was developed by the Highway Research Board, which is a division of the National Research Council of the United States.

Key Features of the HRB Classification System:

1. Functional Classification: The HRB system classifies highways based on their intended function or purpose. It categorizes highways into three main functional classes:

a) Arterial Highways: These highways serve as major transportation corridors, connecting major cities or regions. They facilitate the movement of large volumes of traffic at high speeds.

b) Collector Highways: Collector highways serve to collect traffic from local roads and distribute it to arterial highways. They provide access to residential, commercial, and industrial areas.

c) Local Roads: Local roads primarily serve local traffic, providing access to residential areas, businesses, and other local destinations.

2. Administrative Classification: The HRB system also considers the administrative responsibility for highway planning, design, construction, and maintenance. It classifies highways based on the level of jurisdiction responsible for their administration, including federal, state, county, and local authorities.

3. Uniformity and Consistency: The HRB classification system ensures uniformity and consistency in highway classification across different regions and jurisdictions. It provides a standardized framework for planning, design, and maintenance activities.

4. Data Collection and Analysis: The HRB system facilitates the collection and analysis of highway-related data. By categorizing highways based on their functional and administrative characteristics, it helps in conducting research, analyzing traffic patterns, and making informed decisions regarding highway development and improvement.

5. Planning and Funding: The HRB classification system is used for transportation planning and allocating funding for highway projects. It assists in identifying the needs and priorities of different types of highways and allocating resources accordingly.

Overall, the HRB Classification System, also known as the Public Road Administration (PRA) system, provides a comprehensive framework for categorizing highways based on their functional and administrative characteristics. It facilitates uniformity, data analysis, planning, and funding decisions in the field of highway transportation.