In this article we will discuss about:- 1. Introduction to Tamil Nadu State Transport Corporation 2. History of Tamil Nadu State Transport Corporation 3. Overview 4. Origin 5. Services Available to the Public 6. Institutes of Road Transport 7. Awards 8. Other Related Information. Contents: Introduction to Tamil Nadu State Transport Corporation Overview of the Tamil Nadu State Transport Corporation [...]
Read this article to learn about: 1. Objectives of highway planning 2. Necessity of highway planning in India 3. Principle of Highway Planning 4. Highway Planning Process 5. Importance of Highway Planning. Introduction to Highway Planning: Planning is a prerequisite for any engineering activity or project; this is particularly true for the development of a highway network or system in [...]
Traffic Engineering: Probability, Sampling, Normal Distribution and allied Notes! Traffic engineering deals extensively with data obtained from surveys and studies related to traffic, which are useful in the design and operation of highways. Statistical methods have proved to be a powerful tool in the analysis and interpretation of these data. Elementary concepts of statistics are considered here, with particular reference [...]
Spot Speed Studies in Traffic Engineering: Endoscope, Measurement and Methods of Measuring Spot Speeds! Speed Studies: Traffic flow is influenced by the speed of the traffic on existing roads. Speed is a function of several factors such as the geometric design features, traffic conditions like the presence of other vehicles, time and place, the environment, and the driver, and the [...]
When two or more roads intersect or cross, the users of these roads have to necessarily adjust their movement in order to avoid 'collision'; this adjustment could be by way of reduction in speed and/or change in the path of their motion. An intersection is defined as "the general area where two or more highways join or cross, within which [...]
Materials Used for the Construction of Roads: Methods, Process, Layers and Road Pavement! A wide variety of materials are used in the construction of roads these are soils (naturally occurring or processed), aggregates (fine aggregates or coarse aggregates obtained from rocks), binders like lime, bituminous materials, and cement, and miscellaneous materials used as admixtures for improved performance of roads under [...]
In this article we will discuss about how to design bituminous mixes for construction of roads [with mix formula]| . Design of Bituminous Mixes: The steps in the design of bituminous mixes are: Selection of Aggregate and Grading: Aggregates which possess the desired qualities of strength, hardness, toughness, and soundness are selected. Crushed stone aggregates and sands of angular particles [...]
The following tests are conducted to assess the suitability or quality of bitumen for specific use as a paving material and also for read making: 1. Specific Gravity: Specific gravity of a binder material does not affect its bonding characteristics. However, its value is needed in bituminous mix design. This is determined at 27°C using a standard pyknometer. The bitumen [...]
The following tests are conducted on tar to check or assess its suitability or quality for specific uses in road construction: 1. Specific Gravity: For determining the specific gravity of tar, the same procedure as for bitumen using a pyknometer is applicable. 2. Distillates: A distillation flask of about one litre capacity is filled with a weighed quantity of tar [...]
Highway Pavement: Layers, Functions, Types, Defects, Rigid and Flexible Pavements! Pavement design, in general, consists of determining the thickness of the pavement or of the several layers of which it is composed in order to resist the wheel loads of the traffic and transmit them safely on to the foundation soil. Thus, the strength of the pavement must be adequate [...]