WORD QUESTION

Question

A snow storm has closed a two lane north bound route. the closure has created a back up of solely commercial truck traffic. answer the following question: How long in minutes will it take to clear the last truck in the traffic backup through the chain control area?

Chain control zone: 15 miles per hour for 4.1 miles

Average length of truck: 60 feet

average space between trucks: 20 feet

Traffic backlog 11.5 miles

 

Answer 1

Since you are only interested in the last truck the equation is given by:

 

time = distance/rate

time = (4.1 + 11.5)/15               total distance = the chain control zone distance + the backlog distance

time  = 1.04 hours or 62.4 minutes