How many traffic lights in New York?

How the fuck do you answer this without using Google?

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www1.nyc.gov/html/dot/html/infrastructure/signals.shtml
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Estimate amount of people
Estimate how many people live in a street then you know the amount of streets
Estimate how many crossroads there are based on the streets
Estimate how many of those crossroads have traffic lights.

Did someone asked you this in a job interview?

Take 10 hours to drive in this direction at this speed and I see a light every 20m, do the quik math

I think the street even have numbers in New York so its quite easy

Take a percentage off cuz of stops and railroads or whatever

walk around and count them

Multiply X routes with Y routes and you get an avg

Well I know New York has 100 streets because I’ve heard of 1st street and I’ve heard of 84th street. I also know there are about 14 avenues. So that means about 1400 intersections. Assume each one has a traffic light, I’d assume the traffic lights on highways/freeways are negligible.

Same guy at university

No, but it's very similar to a question previously asked at a company I want to work at. (Don't want to say the company cause it seems to get an unusually small amount if applicants for the pay) Got most of them just couldn't manage this one, thanks.

If it's a job interview question just say a random estimate like 232 there's a 100% chance they dont even know the answer

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232 trafic lights in New York? Are you retarded?
Multiply that by 10 and you are geting close

Call the NYCDOT and ask them.

As of June 30, 2011, there were 12,460 intersections with traffic signals citywide, including 2,820 in Manhattan, 1,605 in the Bronx, 4,371 in Brooklyn, 3,119 in Queens and 545 in Staten Island.
www1.nyc.gov/html/dot/html/infrastructure/signals.shtml

I always wonder what companies want to hear when they ask such questions?
I would say that I need to google it, but a couple thousand would be a rough estimate.

Just ask the local traffic authority, such data along with water pipes, fire stations etc should be public

this is the based answer

just bring up your phone and google it in the interview, that shows you are a self starter and able to think outside the box

Ring up city hall and ask

Google "fermi questions" user, I'm assuming you were asked this in a job interview.
The classic one is "How many piano tuners are there in Chicago".
Another one could be how many cats are there in london?
Just estimate. For that bottom one, say 1 in 5 households have a cat. Say that there are about 10 million people in london. Say that on average there are 2 people to a household (probably low but who cares)
that means 5 million households, 1 in 5 with cats makes 1 million cats in london.

Who knows if that's right, the interviewers don't care either, just how you get there matters.

t. Physicist

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say "i don't know".

nohing worse than a jerkoff that pretends to know everything.

Just add “hundred” to make them feel stupid like “of course I meant 232 hundred silly interviewer :3

I would use duckduckgo

This

>No, but it's very similar to a question previously asked at a company I want to work at.
Why would you want to work for a company who asks retarded questions like this in an interview?

Cheers think I've got it now

Fantastic pay, very high academic requirements, opportunity to travel the world, lots of sports/extra benefits, large holidays.

It also has an absolutely painless selection process (filter vast majority of candidates with grades, aptitude test, then a single hour long interview) Vs 3 interviews, team building exercise, loads of stupid long to fill out questions online.

manhattan does not equal new york. Also there's way more than 100 streets in manhattan dumbass

About 10 million people in ny
1000 people per block
10,000 blocks
10,000 intersections
4 traffic lights per intersection
40,000 traffic lights in ny

well first it will massively help if you've been to
Well first I'm assuming the question is stated as Manhattan, not New York, as answering how many in New York state really the only way would be to take the population and divide it by an estimate of traffic lights per person. If it was specifically manhattan then you would talk about how many are at each intersection (4 sets) and a guess of how wide by how long manhattan is since it's a grid (without looking I would guess 12 x 250 but I don't know NYC too well)

so 12 x 250 x 4 x 3, but it gets more complicated if there are protected turn signals and areas not falling into the grid pattern, so take that product and adjust it upward 15%-20% based on an estimate of those areas

NYC goes up to 263rd street.

you don't answer it without Google, just like you you don't know when Ethplode will 1000x but you know it will.

Manhattan Island goes up to 220th street by the way. Marble Hill is connected to the bronx but technically part of the borough of Manhattan and it goes up to 228th or 230th street. I know all of this because that's my area. The Bronx goes up to 263rd Street over there and 242nd Street in the East Bronx