Lag Distance given Stopping Sight Distance and Braking Distance Calculator

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Sight Distance

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Stopping Sight Distance

Overtaking Sight Distance

✖Sight Stopping Distance represents the distance a vehicle will travel while the driver is reacting to something they see ahead.ⓘ Sight Stopping Distance [SSD]			+10% -10%
✖Braking Distance is the distance travelled by the vehicle at the point where brake is applied to the point where it stops.ⓘ Braking Distance [l]			+10% -10%

✖Lag Distance is the distance, a vehicle travels while the driver reacts to a hazard or applies the brakes.ⓘ Lag Distance given Stopping Sight Distance and Braking Distance [LD]

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Formula

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Lag Distance given Stopping Sight Distance and Braking Distance

Formula

`"LD" = "SSD"-"l"`

Example

`"13.4m"="61.4m"-"48m"`

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Lag Distance given Stopping Sight Distance and Braking Distance Solution

STEP 0: Pre-Calculation Summary

Formula Used

Lag Distance = Sight Stopping Distance-Braking Distance
LD = SSD-l
This formula uses 3 Variables

Variables Used

Lag Distance - (Measured in Meter) - Lag Distance is the distance, a vehicle travels while the driver reacts to a hazard or applies the brakes.
Sight Stopping Distance - (Measured in Meter) - Sight Stopping Distance represents the distance a vehicle will travel while the driver is reacting to something they see ahead.
Braking Distance - (Measured in Meter) - Braking Distance is the distance travelled by the vehicle at the point where brake is applied to the point where it stops.

STEP 1: Convert Input(s) to Base Unit

Sight Stopping Distance: 61.4 Meter --> 61.4 Meter No Conversion Required
Braking Distance: 48 Meter --> 48 Meter No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

LD = SSD-l --> 61.4-48

Evaluating ... ...

LD = 13.4

STEP 3: Convert Result to Output's Unit

13.4 Meter --> No Conversion Required

FINAL ANSWER

13.4 Meter <-- Lag Distance

(Calculation completed in 00.004 seconds)

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Created by Rahul

Dayanada Sagar college of Engineering (DSCE), banglore

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National Institute Of Technology (NIT), Hamirpur

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< 12 Stopping Sight Distance Calculators

Reaction Time given Stopping Sight Distance and Vehicle Velocity

Go Reaction Time = (Sight Stopping Distance-(Vehicle Speed^2)/(2*[g]*Coefficient of Friction))/Vehicle Speed

Stopping Sight Distance given Vehicle Velocity and Reaction Time of Vehicle

Go Sight Stopping Distance = Vehicle Speed*Reaction Time+(Vehicle Speed^2)/(2*[g]*Coefficient of Friction)

Maximum Frictional Force Developed during Braking Operation of Vehicle

Go Maximum Frictional Force = (Total Weight of Vehicle*Velocity^2)/(2*[g]*Braking Distance)

Weight of Vehicle given Kinetic Energy of Vehicle at Design Speed

Go Total Weight of Vehicle = (2*[g]*Maximum Frictional Force*Braking Distance)/Velocity^2

Velocity of Vehicle given Braking Distance after Braking Operation

Go Velocity = sqrt(2*[g]*Coefficient of Friction*Braking Distance)

Work Done against Friction in Stopping Vehicle

Go Work done against Friction = Coefficient of Friction*Total Weight of Vehicle*Braking Distance

Kinetic Energy of Vehicle at Design Speed

Go Kinetic Energy of Vehicle at Design Speed = (Total Weight of Vehicle*Velocity^2)/(2*[g])

Braking Distance of Vehicle during Braking Operation

Go Braking Distance = Velocity^2/(2*[g]*Coefficient of Friction)

Maximum Frictional Force given Kinetic Energy of Vehicle at Design Speed

Go Maximum Frictional Force = Kinetic Energy of Vehicle at Design Speed/Braking Distance

Stopping Sight Distance given Lag Distance and Braking Distance

Go Sight Stopping Distance = Lag Distance+Braking Distance

Lag Distance given Stopping Sight Distance and Braking Distance

Go Lag Distance = Sight Stopping Distance-Braking Distance

Braking Distance given Lag Distance and Stopping Sight Distance

Go Braking Distance = Sight Stopping Distance-Lag Distance

Lag Distance given Stopping Sight Distance and Braking Distance Formula

Lag Distance = Sight Stopping Distance-Braking Distance
LD = SSD-l

Lag Distance

Lag distance refers to the distance that a driver travels from perceiving a hazard to applying the brakes.

Stopping Sight distance (SSD)

Stopping Sight distance represents the minimum distance required for a driver to bring their vehicle to a complete stop while reacting to an unexpected obstacle in the roadway.

How to Calculate Lag Distance given Stopping Sight Distance and Braking Distance?

Lag Distance given Stopping Sight Distance and Braking Distance calculator uses Lag Distance = Sight Stopping Distance-Braking Distance to calculate the Lag Distance, Lag Distance given Stopping Sight Distance and Braking Distance formula is defined as the difference of two components the Stopping Sight Distance and the braking distance. Lag Distance is denoted by LD symbol.

How to calculate Lag Distance given Stopping Sight Distance and Braking Distance using this online calculator? To use this online calculator for Lag Distance given Stopping Sight Distance and Braking Distance, enter Sight Stopping Distance (SSD) & Braking Distance (l) and hit the calculate button. Here is how the Lag Distance given Stopping Sight Distance and Braking Distance calculation can be explained with given input values -> 19.4 = 61.4-48.

FAQ

What is Lag Distance given Stopping Sight Distance and Braking Distance?

Lag Distance given Stopping Sight Distance and Braking Distance formula is defined as the difference of two components the Stopping Sight Distance and the braking distance and is represented as LD = SSD-l or Lag Distance = Sight Stopping Distance-Braking Distance. Sight Stopping Distance represents the distance a vehicle will travel while the driver is reacting to something they see ahead & Braking Distance is the distance travelled by the vehicle at the point where brake is applied to the point where it stops.

How to calculate Lag Distance given Stopping Sight Distance and Braking Distance?

Lag Distance given Stopping Sight Distance and Braking Distance formula is defined as the difference of two components the Stopping Sight Distance and the braking distance is calculated using Lag Distance = Sight Stopping Distance-Braking Distance. To calculate Lag Distance given Stopping Sight Distance and Braking Distance, you need Sight Stopping Distance (SSD) & Braking Distance (l). With our tool, you need to enter the respective value for Sight Stopping Distance & Braking Distance 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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