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Reaction Time of Driver using OSD Formula

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Reaction Time of Driver is the time taken by the driver from the instant the object is visible to the driver to the instant when the brakes are applied. Check FAQs

t r = \frac{OSD - V b \cdot T - 1.4 \cdot V b - 2 \cdot l - V \cdot T}{V b}

t_r - Reaction Time of Driver?OSD - Overtaking Sight Distance on road?V_b - Speed of Slow moving vehicle?T - Time taken for Overtaking Operation?l - Length of Wheel Base as per IRC?V - Speed of Fast moving Vehicle?

Reaction Time of Driver using OSD Example

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Here is how the Reaction Time of Driver using OSD equation looks like with Values.

Here is how the Reaction Time of Driver using OSD equation looks like with Units.

Here is how the Reaction Time of Driver using OSD equation looks like.

2.1051 = \frac{278 - 11.11 \cdot 7.8 - 1.4 \cdot 11.11 - 2 \cdot 6 - 18 \cdot 7.8}{11.11}

2.1051s = \frac{278m - 11.11m/s \cdot 7.8s - 1.4 \cdot 11.11m/s - 2 \cdot 6m - 18m/s \cdot 7.8s}{11.11m/s}

2.1051 = \frac{278 - 11.11 \cdot 7.8 - 1.4 \cdot 11.11 - 2 \cdot 6 - 18 \cdot 7.8}{11.11}

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Reaction Time of Driver using OSD Solution

Follow our step by step solution on how to calculate Reaction Time of Driver using OSD?

FIRST Step Consider the formula

t r = \frac{OSD - V b \cdot T - 1.4 \cdot V b - 2 \cdot l - V \cdot T}{V b}

Next Step Substitute values of Variables

∴

t r = \frac{278m - 11.11m/s \cdot 7.8s - 1.4 \cdot 11.11m/s - 2 \cdot 6m - 18m/s \cdot 7.8s}{11.11m/s}

Next Step Prepare to Evaluate

∴

t r = \frac{278 - 11.11 \cdot 7.8 - 1.4 \cdot 11.11 - 2 \cdot 6 - 18 \cdot 7.8}{11.11}

Next Step Evaluate

∴

t r = 2.10513051305131s

LAST Step Rounding Answer

∴

t r = 2.1051s

Reaction Time of Driver using OSD Formula Elements

Variables

Reaction Time of Driver

Reaction Time of Driver is the time taken by the driver from the instant the object is visible to the driver to the instant when the brakes are applied.

Symbol: t_r

Measurement: TimeUnit: s

Note: Value should be between 1 to 10.

Formulas to find Reaction Time of Driver

Overtaking Sight Distance on road

Overtaking Sight Distance on road is minimum distance open to the vision of the driver of a vehicle intending to overtake slow moving vehicle with safety.

Symbol: OSD

Measurement: LengthUnit: m

Note: Value should be greater than 5.

Formulas to find Overtaking Sight Distance on road

Speed of Slow moving vehicle

Speed of Slow moving vehicle is the speed of vehicle which has to be overtaken.

Symbol: V_b

Measurement: SpeedUnit: m/s

Note: Value should be greater than 5.

Formulas to find Speed of Slow moving vehicle

Time taken for Overtaking Operation

Time taken for Overtaking Operation is the time taken by fast moving vehicle to overtake the slow moving vehicle.

Symbol: T

Measurement: TimeUnit: s

Note: Value should be greater than 1.5.

Formulas to find Time taken for Overtaking Operation

Length of Wheel Base as per IRC

Length of Wheel Base as per IRC is the distance between the center of the front wheels and the center of the rear wheels.

Symbol: l

Measurement: LengthUnit: m

Note: Value should be greater than 2.

Formulas to find Length of Wheel Base as per IRC

Speed of Fast moving Vehicle

Speed of Fast moving Vehicle is the speed of overtaking vehicle.

Symbol: V

Measurement: SpeedUnit: m/s

Note: Value should be greater than 5.

Formulas to find Speed of Fast moving Vehicle

Other formulas in OSD category

Go Velocity of Overtaking Vehicle for Forward Moving Vehicle Velocity in meter per second

V = V b + 4.5

Go Total Time of Travel in Overtaking Sight distance

T = \sqrt{4 \cdot \frac{s}{a}}

Go Spacing between Vehicles given Total Time of Travel in Overtaking Sight distance

s = \frac{(T^{2}) \cdot a}{4}

Go Acceleration of Vehicle given Total Time of Travel in Overtaking Sight distance

a = \frac{4 \cdot s}{T^{2}}

How to Evaluate Reaction Time of Driver using OSD?

Reaction Time of Driver using OSD evaluator uses Reaction Time of Driver = (Overtaking Sight Distance on road-Speed of Slow moving vehicle*Time taken for Overtaking Operation-1.4*Speed of Slow moving vehicle-2*Length of Wheel Base as per IRC-Speed of Fast moving Vehicle*Time taken for Overtaking Operation)/Speed of Slow moving vehicle to evaluate the Reaction Time of Driver, Reaction Time of Driver using OSD is defined as time taken by the driver from the instant the object is visible to the driver to the instant when the brakes are applied. Reaction Time of Driver is denoted by t_r symbol.

How to evaluate Reaction Time of Driver using OSD using this online evaluator? To use this online evaluator for Reaction Time of Driver using OSD, enter Overtaking Sight Distance on road (OSD), Speed of Slow moving vehicle (V_b), Time taken for Overtaking Operation (T), Length of Wheel Base as per IRC (l) & Speed of Fast moving Vehicle (V) and hit the calculate button.

FAQs on Reaction Time of Driver using OSD

What is the formula to find Reaction Time of Driver using OSD?

The formula of Reaction Time of Driver using OSD is expressed as Reaction Time of Driver = (Overtaking Sight Distance on road-Speed of Slow moving vehicle*Time taken for Overtaking Operation-1.4*Speed of Slow moving vehicle-2*Length of Wheel Base as per IRC-Speed of Fast moving Vehicle*Time taken for Overtaking Operation)/Speed of Slow moving vehicle. Here is an example- 2.105131 = (278-11.11*7.8-1.4*11.11-2*6-18*7.8)/11.11.

How to calculate Reaction Time of Driver using OSD?

With Overtaking Sight Distance on road (OSD), Speed of Slow moving vehicle (V_b), Time taken for Overtaking Operation (T), Length of Wheel Base as per IRC (l) & Speed of Fast moving Vehicle (V) we can find Reaction Time of Driver using OSD using the formula - Reaction Time of Driver = (Overtaking Sight Distance on road-Speed of Slow moving vehicle*Time taken for Overtaking Operation-1.4*Speed of Slow moving vehicle-2*Length of Wheel Base as per IRC-Speed of Fast moving Vehicle*Time taken for Overtaking Operation)/Speed of Slow moving vehicle.

Can the Reaction Time of Driver using OSD be negative?

No, the Reaction Time of Driver using OSD, measured in Time cannot be negative.

Which unit is used to measure Reaction Time of Driver using OSD?

Reaction Time of Driver using OSD is usually measured using the Second[s] for Time. Millisecond[s], Microsecond[s], Nanosecond[s] are the few other units in which Reaction Time of Driver using OSD can be measured.

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Reaction Time of Driver using OSD Formula

Reaction Time of Driver using OSD Example

Reaction Time of Driver using OSD Solution

Reaction Time of Driver using OSD Formula Elements

Other formulas in OSD category

How to Evaluate Reaction Time of Driver using OSD?

FAQs on Reaction Time of Driver using OSD

Variable Name