FormulaDen.com

Physics Chemistry Math Chemical Engineering Civil Electrical Electronics Electronics and Instrumentation Materials Science Mechanical Production Engineering Financial Health

Sight Distance Formula

Fx Copy

LaTeX Copy

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. Check FAQs

SD = \frac{{V Turning Speed}^{2}}{25.5 \cdot d}

SD - Sight Distance?V_{Turning Speed} - Turning Speed of Aircraft?d - Deceleration?

Sight Distance Example

With values

With units

Only example

Here is how the Sight Distance equation looks like with Values.

Here is how the Sight Distance equation looks like with Units.

Here is how the Sight Distance equation looks like.

3.0073 = \frac{50^{2}}{25.5 \cdot 32.6}

3.0073m = \frac{{50km/h}^{2}}{25.5 \cdot 32.6m²/s}

3.0073 = \frac{50^{2}}{25.5 \cdot 32.6}

Tip: Use pencil ( Pencil

) icon above to edit Input Values and Units.

Calculate

Recalculate

Solution

Copy

Reset

You are here -

Home » Category

Engineering » Category

Civil » Category

Transportation Engineering » fx Sight Distance

Sight Distance Solution

Follow our step by step solution on how to calculate Sight Distance?

FIRST Step Consider the formula

SD = \frac{{V Turning Speed}^{2}}{25.5 \cdot d}

Next Step Substitute values of Variables

∴

SD = \frac{{50km/h}^{2}}{25.5 \cdot 32.6m²/s}

Next Step Prepare to Evaluate

∴

SD = \frac{50^{2}}{25.5 \cdot 32.6}

Next Step Evaluate

∴

SD = 3.00733790448695m

LAST Step Rounding Answer

∴

SD = 3.0073m

Sight Distance Formula Elements

Variables

Sight Distance

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.

Symbol: SD

Measurement: LengthUnit: m

Note: Value can be positive or negative.

Formulas to find Sight Distance

Turning Speed of Aircraft

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).

Symbol: V_{Turning Speed}

Measurement: SpeedUnit: km/h

Note: Value can be positive or negative.

Formulas to find Turning Speed of Aircraft

Deceleration

Deceleration is defined as the reduction of the speed.

Symbol: d

Measurement: Kinematic ViscosityUnit: m²/s

Note: Value should be greater than 0.

Formulas to find Deceleration

Other formulas in Turning Radius category

Go Wheelbase given Turning Radius

W = \sqrt{\frac{(R Taxiway \cdot (0.5 \cdot T Width)) - D Midway}{0.388}}

Go Turning Radius

R Taxiway = \frac{{V Turning Speed}^{2}}{125 \cdot μ Friction}

Go Turning Speed of Aircraft given Radius of Curve

V Turning Speed = \sqrt{R Taxiway \cdot μ Friction \cdot 125}

Go Taxiway Width given Turning Radius

T Width = \frac{(\frac{0.388 \cdot W^{2}}{R Taxiway}) + D Midway}{0.5}

How to Evaluate Sight Distance?

Sight Distance evaluator uses Sight Distance = (Turning Speed of Aircraft^2)/(25.5*Deceleration) to evaluate 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 evaluate Sight Distance using this online evaluator? To use this online evaluator for Sight Distance, enter Turning Speed of Aircraft (V_{Turning Speed}) & Deceleration (d) and hit the calculate button.

FAQs on Sight Distance

What is the formula to find Sight Distance?

The formula of Sight Distance is expressed as Sight Distance = (Turning Speed of Aircraft^2)/(25.5*Deceleration). Here is an example- 4.084967 = (13.8888888888889^2)/(25.5*32.6).

How to calculate Sight Distance?

With Turning Speed of Aircraft (V_{Turning Speed}) & Deceleration (d) we can find Sight Distance using the formula - Sight Distance = (Turning Speed of Aircraft^2)/(25.5*Deceleration).

Can the Sight Distance be negative?

Yes, the Sight Distance, measured in Length can be negative.

Which unit is used to measure Sight Distance?

Sight Distance is usually measured using the Meter[m] for Length. Millimeter[m], Kilometer[m], Decimeter[m] are the few other units in which Sight Distance can be measured.

Let Others Know

✖

Facebook

Twitter

Copied!

: Value
: Unit