Transportation

Home/Transportation

Do you need to remove the ads? Become VIP Member

Discy Latest Questions

Asked: In:
aviratdhodare
aviratdhodare

aviratdhodare

View Profile

What are the best economical pavement design method for road construction?

  1. aviratdhodare

    aviratdhodare

    View Profile
    aviratdhodare
    This answer was edited.
    • 11
Asked: In:
AdityaBhandakkar
AdityaBhandakkar

AdityaBhandakkar

View Profile
User

What is the difference between Highway and Airfield pavement?

  1. Vivek Patel

    Vivek Patel

    View Profile
    Vivek Patel User

    Comparison of both is Highway pavement Cost is low. Less toughness compare to airfield. Design load is less. Less hardness compare to airfield. Compare to airfield, less construction cost and design cost. Length of Highway payment is very high. Airfield pavement Cost is high. High toughness need. DeRead more

    Comparison of both is

    Highway pavement

    • Cost is low.
    • Less toughness compare to airfield.
    • Design load is less.
    • Less hardness compare to airfield.
    • Compare to airfield, less construction cost and design cost.
    • Length of Highway payment is very high.

    Airfield pavement

    • Cost is high.
    • High toughness need.
    • Design load is very High
    • Need higher resistant to wear and tear due to aircraft trust.
    • Design cost and material cost is high due to rigid specifications and high level of construction practice.
    • Length of airfield pavement is less compare to Highway pavement.
    See less
    • 0
Asked: In:
AdityaBhandakkar
AdityaBhandakkar

AdityaBhandakkar

View Profile
User

What is the ruling radius of a horizontal curve?

  1. aviratdhodare

    aviratdhodare

    View Profile
    aviratdhodare

    The maximum degree of curve or smallest radius for a railroad is 3 degrees on a new main line track with a maximum grade of 1% compensated at 0.04% per degree of curve; therefore a grade in a 3 degree curve would actually be 0.88%. For a highway it depends on what kind, where, typical traffic, speedRead more

    The maximum degree of curve or smallest radius for a railroad is 3 degrees on a new main line track with a maximum grade of 1% compensated at 0.04% per degree of curve; therefore a grade in a 3 degree curve would actually be 0.88%. For a highway it depends on what kind, where, typical traffic, speed limits, etc.  Degree of curve is the angle between the radii of a curve of a 100 foot chord which is chord definition. Highway departments usually use Degree of Curve as the angle between the radii of a curve of an arc of 100 feet. For curves 3 degrees or under, the difference between the definitions staked on the ground is inconsequential.

    See less
    • 32
Asked: In:
RaghavArora
RaghavArora

RaghavArora

View Profile
Learner

What is difference between GIS and GPS?

  1. Abbas Khan Civil Engineer

    Abbas Khan Civil Engineer

    View Profile
    Best Answer
    Abbas Khan Civil Engineer Learner

    GIS is the software used to find capture, store, manipulate, analyze, and present all types of geographical data. The main purpose is to share the geographic location and other details of a specific point on the earth. It has multiple application in our daily lives especially in construction sectorsRead more

    GIS is the software used to find capture, store, manipulate, analyze, and present all types of geographical data. The main purpose is to share the geographic location and other details of a specific point on the earth. It has multiple application in our daily lives especially in construction sectors, flood control e.t.c

     

    While GPS is a global navigation satellite system that gives us time, velocity, location, etc,. The main objective is the accuracy in Position on the earth.GPS works through a technique called trilateration, which collects information to output the information.

    See less
    • 4
Asked: In:
Vivek Patel
Vivek Patel

Vivek Patel

View Profile
User

What is difference between Asphalt and Bitumen?

  1. Kamlaksha Rana

    Kamlaksha Rana

    View Profile
    Best Answer
    Kamlaksha Rana Beginner
    What is difference between Asphalt and Bitumen?

    In simple words, bitumen is a liquid that binds together asphalt. Asphalt-It is a mixture prepared by adding aggregates(sand, gravel, slag, crushed rocks) with appropriate binders like bitumen. Then it is laid down on-site to a decided level or thickness by a paving machine. Bitumen- This is the heaRead more

    In simple words, bitumen is a liquid that binds together asphalt.

    Asphalt-It is a mixture prepared by adding aggregates(sand, gravel, slag, crushed rocks) with appropriate binders like bitumen. Then it is laid down on-site to a decided level or thickness by a paving machine.

    Bitumen- This is the heavy semi-solid hydrocarbon produced by the distillation of crude oil.

    See less
    • 4
Asked: In:
Vivek Patel
Vivek Patel

Vivek Patel

View Profile
User

What is meaning of yellow & white meridian line road?

  1. Kuldeep Singh

    Kuldeep Singh

    View Profile
    Best Answer
    Kuldeep Singh Learner

    Meridian lines, in addition to marking lanes, provide necessary guidelines, instructions, and restrictions on roads. Yellow and white are the most common ones. There is no difference in the roads marked by yellow or white lines as such, but only the instructions given by them are different. Their reRead more

    Meridian lines, in addition to marking lanes, provide necessary guidelines, instructions, and restrictions on roads. Yellow and white are the most common ones. There is no difference in the roads marked by yellow or white lines as such, but only the instructions given by them are different. Their relative occurrence varies from country to country.

    Soild white line: a solid white line along the curb or between two lanes means that switching lanes and overtaking is disallowed until the line changes.

    Broken white line: a broken white line is found between two lanes or in the middle of the road. It means that switching lanes or overtaking is allowed and safe.

    Solid yellow line: a solid yellow line between two lanes means essentially the same thing as a solid white line. A solid yellow line along the curb means that parking at the side of the road is disallowed.

    Double solid yellow line: a double solid yellow line down the middle or between two lanes means that overtaking or switching lanes is dangerous and is not advisable although not disallowed. A double solid yellow line along the curb means that a specific waiting time by the side of the road is allowed, but parking and leaving is not allowed.

    Double yellow solid and broken line: This is a kind of double meridian line found in the middle between two lanes with one line solid and one broken. It means that drivers on the side of the solid line are disallowed from changing lanes or overtaking, but drivers on the side of the broken line are allowed switching lanes and overtaking.

     

    See less
    • 2
Asked: In:
Vivek Patel
Vivek Patel

Vivek Patel

View Profile
User

Which are the best method for traffic survey according to verious location?

  1. aviratdhodare

    aviratdhodare

    View Profile
    aviratdhodare

    Traffic Survey Precise surveys, studies, and scientific analysis of traffic is necessary for traffic engineering and find wide applications in anticipating future requirements of roads, the advancement of existing facilities, design aspects, pavement design, and traffic guidelines and control. TraffRead more

    Traffic Survey

    Precise surveys, studies, and scientific analysis of traffic is necessary for traffic engineering and find wide applications in anticipating future requirements of roads, the advancement of existing facilities, design aspects, pavement design, and traffic guidelines and control.
    Traffic surveys, better-called traffic census, covers all kinds of traffic, size, and weight, traffic flow, traffic volume per hour, and per day, including seasonal variations/annual variations, distribution in different parts of a road network, and distribution in different directions at intersections.

    Traffic volume counts can be obtained by the following methods:

    Manual Method

    Automatic Counters

    • Pneumatic Counters
    • Electrical Counters
    • Photo-Electric Cell Counters

    Moving Observer Method

    Presentation of Traffic Volume Study Data

    The information acquired from traffic volume are introduced in various structures for coming to suitable end results relying upon the reason for examines:

    (a) Hourly, daily, weekly, seasonal, and annual variations of traffic in the form of charts or graphs.

    (b) Annual average daily traffic (AADT) of the total traffic as well as classified traffic is determined.

    • Concept of PCU.
    • If measured for a short period, not for an entire year, is known as Average Daily Traffic (ADT).

    (c) Design hourly volume of traffic

    (d) Traffic flow-lines are drawn through the route with the thickness of lines being proportional to the traffic volumes.

    (e) Traffic flow distribution at road intersections

     

     

    See less
    • 32
Load More Questions