traffic volume

[alejo12]

Hi ,

I was solving a problem for that wanted us to find the growth on traffic volume given:

year 2006 .... 87,000 veh/hr

year 2014 ..... ? veh/fr

growth rate .... 2.5%

the solution stated (1+0.025)^8 . . . . . is this a general equation for growth rate ?

 

[sac_engineer]

Hi ,
I was solving a problem for that wanted us to find the growth on traffic volume given:

year 2006 .... 87,000 veh/hr

year 2014 ..... ? veh/fr

growth rate .... 2.5%

the solution stated (1+0.025)^8 . . . . . is this a general equation for growth rate ?

Looks right to me since you're compounding the rate of increase annually.

 

[maximus808]

I don't have the equation now but wouldn't you use a future worth equation given I=2.5%. There are tables in the cerm for this scenario.

 

[Phalanx]

I don't have the equation now but wouldn't you use a future worth equation given I=2.5%. There are tables in the cerm for this scenario.

You are correct and so is the solution. The formula for future worth is: F = P*(1+i)^n

This equation is on pg. 86-7 in the CERM 11th ed. In this case, you will have to calc the number by hand since the CERM does not have a table for 2.5%.