Sight Distance Calculator

✖Turning Speed of Aircraft at the exit taxiway. Aircraft maneuvering is referenced to a standard rate turn, also known as a rate one turn (ROT).ⓘ Turning Speed of Aircraft [V_{Turning Speed}]			+10% -10%
✖Deceleration is defined as the reduction of the speed.ⓘ Deceleration [d]			+10% -10%

✖Sight Distance is s the minimum distance between two vehicles moving along a curve, when the driver of one vehicle can just see the other vehicle on the road.ⓘ Sight Distance [SD]

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Formula

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Sight Distance

Formula

`"SD" = ("V"_{"Turning Speed"}^2)/(25.5*"d")`

Example

`"3.007338m"=(("50km/h")^2)/(25.5*"32.6m²/s")`

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Sight Distance Solution

STEP 0: Pre-Calculation Summary

Formula Used

Sight Distance = (Turning Speed of Aircraft^2)/(25.5*Deceleration)
SD = (V_{Turning Speed}^2)/(25.5*d)
This formula uses 3 Variables

Variables Used

Sight Distance - (Measured in Meter) - Sight Distance is s the minimum distance between two vehicles moving along a curve, when the driver of one vehicle can just see the other vehicle on the road.
Turning Speed of Aircraft - (Measured in Kilometer per Hour) - Turning Speed of Aircraft at the exit taxiway. Aircraft maneuvering is referenced to a standard rate turn, also known as a rate one turn (ROT).
Deceleration - (Measured in Square Meter per Second) - Deceleration is defined as the reduction of the speed.

STEP 1: Convert Input(s) to Base Unit

Turning Speed of Aircraft: 50 Kilometer per Hour --> 50 Kilometer per Hour No Conversion Required
Deceleration: 32.6 Square Meter per Second --> 32.6 Square Meter per Second No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

SD = (V_{Turning Speed}^2)/(25.5*d) --> (50^2)/(25.5*32.6)

Evaluating ... ...

SD = 3.00733790448695

STEP 3: Convert Result to Output's Unit

3.00733790448695 Meter --> No Conversion Required

FINAL ANSWER

3.00733790448695 ≈ 3.007338 Meter <-- Sight Distance

(Calculation completed in 00.004 seconds)

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Home » Engineering » Civil » Transportation Engineering » Airport Planning and Design » Taxiway and Exit Taxiway Design » Turning Radius » Sight Distance

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Coorg Institute of Technology (CIT), Coorg

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< 19 Turning Radius Calculators

Wheelbase given Turning Radius

Go Wheelbase = sqrt(((Radius of Curve for Taxiway*(0.5*Taxiway Width))-Distance between Midway Points)/0.388)

Radius of Entrance Curve when Deflection Angle of Entrance Curve is considered

Go Radius of Curve for Taxiway = (180*Length of Entrance Curve)/(pi*Deflection Angle of Entrance Curve)

Horonjeff Equation for Turning Radius of Taxiway

Go Radius of Curve for Taxiway = (0.388*Wheelbase^2)/((0.5*Taxiway Width)-Distance between Midway Points)

Taxiway Width given Turning Radius

Go Taxiway Width = (((0.388*Wheelbase^2)/Radius of Curve for Taxiway)+Distance between Midway Points)/0.5

Deflection Angle of Entrance Curve

Go Deflection Angle of Entrance Curve = (180*Length of Entrance Curve)/(pi*Radius of Curve for Taxiway)

Length of Entrance Curve when Deflection Angle of Entrance Curve is considered

Go Length of Entrance Curve = (pi*Deflection Angle of Entrance Curve*Radius of Curve for Taxiway)/180

Distance between Midway Points of Main Gears and Edge of Taxiway Pavements

Go Distance between Midway Points = (0.5*Taxiway Width)-(0.388*Wheelbase^2/Radius of Curve for Taxiway)

Deflection of Angle at Central Curve when Length of Central Curve is considered

Go Deflection Angle of Central Curve = (180*Length of Central Curve)/(pi*Radius of Central Curve)

Radius of Central Curve given Length of Central Curve

Go Radius of Central Curve = (180*Length of Central Curve)/(pi*Deflection Angle of Central Curve)

Length of Central Curve

Go Length of Central Curve = (pi*Radius of Central Curve*Deflection Angle of Central Curve)/180

Turning Speed of Aircraft given Radius of Curve

Go Turning Speed of Aircraft = sqrt(Radius of Curve for Taxiway*Coefficient of Friction*125)

Turning Speed of Aircraft given Sight Distance

Go Turning Speed of Aircraft = sqrt(25.5*Deceleration*Sight Distance)

Turning Radius

Go Radius of Curve for Taxiway = (Turning Speed of Aircraft^2)/(125*Coefficient of Friction)

Sight Distance

Go Sight Distance = (Turning Speed of Aircraft^2)/(25.5*Deceleration)

Deceleration given Sight Distance

Go Deceleration = Turning Speed of Aircraft^2/(25.5*Sight Distance)

Deflection Angle of Entrance Curve given Deflection of Angle at Central Curve

Go Deflection Angle of Entrance Curve = 35-Deflection Angle of Central Curve

Deflection of Angle at Central Curve

Go Deflection Angle of Central Curve = 35-Deflection Angle of Entrance Curve

Radius of Curve when Velocity in Turn

Go Radius of Curve for Taxiway = (Turning Speed of Aircraft/4.1120)^2

Velocity in Turn

Go Turning Speed of Aircraft = 4.1120*Radius of Curve for Taxiway^0.5

Sight Distance Formula

Sight Distance = (Turning Speed of Aircraft^2)/(25.5*Deceleration)
SD = (V_{Turning Speed}^2)/(25.5*d)

What is Sight distance?

Sight distance is the length of roadway visible to a driver. The three types of sight distance common in roadway design are intersection sight distance, stopping sight distance, and passing sight distance.

How to Calculate Sight Distance?

Sight Distance calculator uses Sight Distance = (Turning Speed of Aircraft^2)/(25.5*Deceleration) to calculate the Sight Distance, The Sight Distance is the length of roadway visible to a driver. The three types of sight distance common in roadway design are intersection sight distance, stopping sight distance, and passing sight distance. Sight Distance is denoted by SD symbol.

How to calculate Sight Distance using this online calculator? To use this online calculator for Sight Distance, enter Turning Speed of Aircraft (V_{Turning Speed}) & Deceleration (d) and hit the calculate button. Here is how the Sight Distance calculation can be explained with given input values -> 4.084967 = (13.8888888888889^2)/(25.5*32.6).

FAQ

What is Sight Distance?

The Sight Distance is the length of roadway visible to a driver. The three types of sight distance common in roadway design are intersection sight distance, stopping sight distance, and passing sight distance and is represented as SD = (V_{Turning Speed}^2)/(25.5*d) or Sight Distance = (Turning Speed of Aircraft^2)/(25.5*Deceleration). Turning Speed of Aircraft at the exit taxiway. Aircraft maneuvering is referenced to a standard rate turn, also known as a rate one turn (ROT) & Deceleration is defined as the reduction of the speed.

How to calculate Sight Distance?

The Sight Distance is the length of roadway visible to a driver. The three types of sight distance common in roadway design are intersection sight distance, stopping sight distance, and passing sight distance is calculated using Sight Distance = (Turning Speed of Aircraft^2)/(25.5*Deceleration). To calculate Sight Distance, you need Turning Speed of Aircraft (V_{Turning Speed}) & Deceleration (d). With our tool, you need to enter the respective value for Turning Speed of Aircraft & Deceleration and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

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