Dear All,
I found an interesting estimation case as in the title. Any thoughts/stragegies to solve it?
Your calculation of the total number of cars refers to capacity. Who said the bridge is full?
Get Active in Our Amazing Community of Over 451,000 Peers!
Schedule mock interviews on the Meeting Board, join the latest community discussions in our Consulting Q&A and find like-minded Case Partners to connect and practice with!
How many cars across a local bridge (like Golden Bridge) a hour/day?
Overview of answers
Upvotes
Best answer
I'd look at the population surrounding the bridge, e.g. 2 cities from each side of the bridge
then * % adult * % with drivers license * % with car * % travels to work * % travel to work through this bridge * 2 as way/back * 5 days a week = a total car number per week / 7 = avg per day
You can extrapolate this number to add another 10-20% to account for business trucks, tourists and other visitors.
I don't think this question is constrained by the 'supply' of the bridge, as the cars that want to drive through it will be able to do so. UNLESS it is specifically specified that there are traffic jams there.
Was this answer helpful?
Hi,
Your question is a bit unclear ("a hour/day?").
Let's say you mean the number of cars on the bridge during the Peak Hour.
- First of all, make an assumption on how long does it take to cross the Golden Gate bridge and what is the average speed in the peak hour.
- Calculate the bridge length with the basic distance formula
- Total number of cars = Lenth of a bridge / (Length of a car + assumed space between the cars) * number of lanes in each direction * two directions
If you need an average number of cars on the bridge during the day - calculate both peak and off-peak hours and find the weighted average.
If you mean the average number of cars crossing the bridge per hour - make an assumption about the number of cars entering/exiting the bridge per minute and multiply by the 2 directions, number of lanes, and 60 min. Similarly, calculate separately peak and off-peak and then find the weighted average
Good luck!
(edited)
Was this answer helpful?
The bridge is assumed to be full because we are calculating for "Peak hour"
Related Cases
Expert case by Francesco
Style:
Our client is a supermarket chain that is considering whether they should enter the emerging online grocery delivery business where consumers order their groceries online and have them delivered to their homes. Currently, two competitors have entered the online market in the client's area in San Fra
...
Our client is a supermarket chain that is considering whether they should enter the emerging online grocery delivery business where consumers order their groceries online and have them deliv
...
(Open whole case)
8.0k
Times solved
Intermediate
Difficulty
Expert case by Francesco
Style:
Your client is the Performance Chemicals division (revenues of $500 million) of a Specialty Chemicals Company with total revenues of $14 billion. The CEO wants the company to become the fastest-growing specialty chemicals company and has therefore asked all the divisions to present growth strat
...
Your client is the Performance Chemicals division (revenues of $500 million) of a Specialty Chemicals Company with total revenues of $14 billion. The CEO wants the company to become the fast
...
(Open whole case)
8.0k
Times solved
Intermediate
Difficulty
Expert case by Francesco
Style:
Our client is a German-owned water provider company based in the southwest of the United States. As the biggest water provider in the region, they serve the majority of the southwest region.Profit growth has slowed down considerably in recent years, and the company is finding it difficult to co
...
Our client is a German-owned water provider company based in the southwest of the United States. As the biggest water provider in the region, they serve the majority of the southwest re
...
(Open whole case)
7.5k
Times solved
Intermediate
Difficulty
Expert case by Francesco
Style:
Our client today is AirService – a service provider for a number of airlines and airports. Their management recently realized a decrease in profits that is linked to increasing costs.Accordingly, they have engaged our firm to help address this issue. How would you approach this problem?
Our client today is AirService – a service provider for a number of airlines and airports. Their management recently realized a decrease in profits that is linked to increasing costs.Accordingly, they have engaged our firm to help address this issue. How would you approach this problem?
(Open whole case)
7.4k
Times solved
Intermediate
Difficulty
Style:
Ein Restaurantinhaber überlegt sich, Schulen mit Essen zu beliefern. Für seine Überlegungen würde er gerne wissen, wie viel Geld er verdienen würde, wenn er 1% der Schulkantinen-Mittagessen in Deutschland verkauft?
Ein Restaurantinhaber überlegt sich, Schulen mit Essen zu beliefern. Für seine Überlegungen würde er gerne wissen, wie viel Geld er verdienen würde, wenn er 1% der Schulkantinen-Mittagessen in Deutschland verkauft?
(Open whole case)
5.7k
Times solved
Intermediate
Difficulty