Stopping Sight Distance on Level Ground with Breaking Efficiency Calculator

✖Speed of Slow moving vehicle is the speed of vehicle which has to be overtaken.ⓘ Speed of Slow moving vehicle [V_b]			+10% -10%
✖Break Reaction Time is defined as time taken by the driver to apply the break.ⓘ Break Reaction Time [t]			+10% -10%
✖Design Coefficient of Friction is a dimensionless number that is defined as the ratio between friction force and normal force.ⓘ Design Coefficient of Friction [f]			+10% -10%
✖The Overall efficiency from shaft A to X, of a gearbox, depends mainly on the gear mesh and bearings efficiency.ⓘ Overall Efficiency from Shaft A to X [η_x]			+10% -10%

✖Stopping Sight Distance is defined as distance provided on the road before a sharp turn.ⓘ Stopping Sight Distance on Level Ground with Breaking Efficiency [SSD]

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Formula

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Stopping Sight Distance on Level Ground with Breaking Efficiency

Formula

`"SSD" = "V"_{"b"}*"t"+("V"_{"b"}^2)/(2*"[g]"*"f"*"η"_{"x"})`

Example

`"80.21905m"="11.11m/s"*"2.5s"+(("11.11m/s")^2)/(2*"[g]"*"0.15"*"0.8")`

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Stopping Sight Distance on Level Ground with Breaking Efficiency Solution

STEP 0: Pre-Calculation Summary

Formula Used

Stopping Sight Distance = Speed of Slow moving vehicle*Break Reaction Time+(Speed of Slow moving vehicle^2)/(2*[g]*Design Coefficient of Friction*Overall Efficiency from Shaft A to X)
SSD = V_b*t+(V_b^2)/(2*[g]*f*η_x)
This formula uses 1 Constants, 5 Variables

Constants Used

[g] - Gravitational acceleration on Earth Value Taken As 9.80665

Variables Used

Stopping Sight Distance - (Measured in Meter) - Stopping Sight Distance is defined as distance provided on the road before a sharp turn.
Speed of Slow moving vehicle - (Measured in Meter per Second) - Speed of Slow moving vehicle is the speed of vehicle which has to be overtaken.
Break Reaction Time - (Measured in Second) - Break Reaction Time is defined as time taken by the driver to apply the break.
Design Coefficient of Friction - Design Coefficient of Friction is a dimensionless number that is defined as the ratio between friction force and normal force.
Overall Efficiency from Shaft A to X - The Overall efficiency from shaft A to X, of a gearbox, depends mainly on the gear mesh and bearings efficiency.

STEP 1: Convert Input(s) to Base Unit

Speed of Slow moving vehicle: 11.11 Meter per Second --> 11.11 Meter per Second No Conversion Required
Break Reaction Time: 2.5 Second --> 2.5 Second No Conversion Required
Design Coefficient of Friction: 0.15 --> No Conversion Required
Overall Efficiency from Shaft A to X: 0.8 --> No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

SSD = V_b*t+(V_b^2)/(2*[g]*f*η_x) --> 11.11*2.5+(11.11^2)/(2*[g]*0.15*0.8)

Evaluating ... ...

SSD = 80.2190473216304

STEP 3: Convert Result to Output's Unit

80.2190473216304 Meter --> No Conversion Required

FINAL ANSWER

80.2190473216304 ≈ 80.21905 Meter <-- Stopping Sight Distance

(Calculation completed in 00.020 seconds)

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Home » Engineering » Civil » Transportation Engineering » Highway Engineering » Sight Distances of Highway » SSD » Stopping Sight Distance on Level Ground with Breaking Efficiency

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Created by Rithik Agrawal

National Institute of Technology Karnataka (NITK), Surathkal

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National Institute of Technology (NIT), Warangal

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< 7 SSD Calculators

Stopping Sight Distance on Level Ground with Breaking Efficiency

Go Stopping Sight Distance = Speed of Slow moving vehicle*Break Reaction Time+(Speed of Slow moving vehicle^2)/(2*[g]*Design Coefficient of Friction*Overall Efficiency from Shaft A to X)

Stopping Sight Distance on Upward Inclined Surface

Go Stopping Sight Distance = Speed of Slow moving vehicle*Break Reaction Time+(Speed of Slow moving vehicle^2)/(2*[g]*Design Coefficient of Friction+Difference in Elevation)

Total Reaction Time given Stopping Sight Distance

Go Break Reaction Time = (Stopping Sight Distance-(Speed of Slow moving vehicle^2)/(2*[g]*Design Coefficient of Friction))/Speed of Slow moving vehicle

Stopping Sight Distance for Velocity in meter per second

Go Stopping Sight Distance = Speed of Slow moving vehicle*Break Reaction Time+(Speed of Slow moving vehicle^2)/(2*[g]*Design Coefficient of Friction)

Stopping Sight Distance

Go Stopping Sight Distance = Breaking Distance+Lag Distance

Stopping Sight Distance given Intermediate Sight Distance

Go Stopping Sight Distance = Intermediate Sight Distance/2

Intermediate Sight Distance

Go Intermediate Sight Distance = 2*Stopping Sight Distance

Stopping Sight Distance on Level Ground with Breaking Efficiency Formula

What is braking efficiency?

The braking efficiency of a vehicle is defined as the braking force produced as a percentage of the total weight of the vehicle

How to Calculate Stopping Sight Distance on Level Ground with Breaking Efficiency?

Stopping Sight Distance on Level Ground with Breaking Efficiency calculator uses Stopping Sight Distance = Speed of Slow moving vehicle*Break Reaction Time+(Speed of Slow moving vehicle^2)/(2*[g]*Design Coefficient of Friction*Overall Efficiency from Shaft A to X) to calculate the Stopping Sight Distance, Stopping Sight Distance on Level Ground with Breaking Efficiency formula is defined as minimum sight distance available on highway at any spot having sufficient length to enable driver to stop vehicle traveling at design speed, safely without collision with any other obstruction. Stopping Sight Distance is denoted by SSD symbol.

How to calculate Stopping Sight Distance on Level Ground with Breaking Efficiency using this online calculator? To use this online calculator for Stopping Sight Distance on Level Ground with Breaking Efficiency, enter Speed of Slow moving vehicle (V_b), Break Reaction Time (t), Design Coefficient of Friction (f) & Overall Efficiency from Shaft A to X (η_x) and hit the calculate button. Here is how the Stopping Sight Distance on Level Ground with Breaking Efficiency calculation can be explained with given input values -> 80.21905 = 11.11*2.5+(11.11^2)/(2*[g]*0.15*0.8).

FAQ

What is Stopping Sight Distance on Level Ground with Breaking Efficiency?

Stopping Sight Distance on Level Ground with Breaking Efficiency formula is defined as minimum sight distance available on highway at any spot having sufficient length to enable driver to stop vehicle traveling at design speed, safely without collision with any other obstruction and is represented as SSD = V_b*t+(V_b^2)/(2*[g]*f*η_x) or Stopping Sight Distance = Speed of Slow moving vehicle*Break Reaction Time+(Speed of Slow moving vehicle^2)/(2*[g]*Design Coefficient of Friction*Overall Efficiency from Shaft A to X). Speed of Slow moving vehicle is the speed of vehicle which has to be overtaken, Break Reaction Time is defined as time taken by the driver to apply the break, Design Coefficient of Friction is a dimensionless number that is defined as the ratio between friction force and normal force & The Overall efficiency from shaft A to X, of a gearbox, depends mainly on the gear mesh and bearings efficiency.

How to calculate Stopping Sight Distance on Level Ground with Breaking Efficiency?

Stopping Sight Distance on Level Ground with Breaking Efficiency formula is defined as minimum sight distance available on highway at any spot having sufficient length to enable driver to stop vehicle traveling at design speed, safely without collision with any other obstruction is calculated using Stopping Sight Distance = Speed of Slow moving vehicle*Break Reaction Time+(Speed of Slow moving vehicle^2)/(2*[g]*Design Coefficient of Friction*Overall Efficiency from Shaft A to X). To calculate Stopping Sight Distance on Level Ground with Breaking Efficiency, you need Speed of Slow moving vehicle (V_b), Break Reaction Time (t), Design Coefficient of Friction (f) & Overall Efficiency from Shaft A to X (η_x). With our tool, you need to enter the respective value for Speed of Slow moving vehicle, Break Reaction Time, Design Coefficient of Friction & Overall Efficiency from Shaft A to X and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

How many ways are there to calculate Stopping Sight Distance?

In this formula, Stopping Sight Distance uses Speed of Slow moving vehicle, Break Reaction Time, Design Coefficient of Friction & Overall Efficiency from Shaft A to X. We can use 4 other way(s) to calculate the same, which is/are as follows -

Stopping Sight Distance = Intermediate Sight Distance/2
Stopping Sight Distance = Breaking Distance+Lag Distance
Stopping Sight Distance = Speed of Slow moving vehicle*Break Reaction Time+(Speed of Slow moving vehicle^2)/(2*[g]*Design Coefficient of Friction)
Stopping Sight Distance = Speed of Slow moving vehicle*Break Reaction Time+(Speed of Slow moving vehicle^2)/(2*[g]*Design Coefficient of Friction+Difference in Elevation)

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