What is Commute: Definition and 68 Discussions

A reverse commute is a round trip, regularly taken, from an urban area to a suburban one in the morning, and returning in the evening. It is almost universally applied to trips to work in the suburbs from homes in the city. This is in opposition to the regular commute, where a person lives in the suburbs and travels to work in the city.
The reverse commuter travels in the opposite direction of the regular daily traffic flow, and therefore encounters less road traffic congestion faced by regular commuters. An advantage of this system is the usage of otherwise empty transit capacity: no additional trains or travel lanes are necessary to accommodate people riding or driving from downtown to the outskirts in the morning, and likewise back downtown at night. Train and bus routes may be more sparse in the reverse direction, but the vehicles have to get back somehow for their next journey in most cases. However, track capacity on some train routes like the Long Island Rail Road Ronkonkoma Branch and the New Jersey Transit Gladstone Branch in the US significantly reduces or even eliminates reverse commute options. Hence, transit usage can be lower for reverse-commuters than regular commuters. In some cases, reverse commuting has become quite popular. For example, Metro-North Railroad runs rush hour New Haven Line trains from New York City to Stamford, CT and surrounding suburbs to accommodate its many reverse commuters. Low unemployment rates in the suburbs may help to fuel the increase over the past years in reverse commuter ridership.But the very reasons commuting makes sense (such as higher employment in the city and lower housing prices in the suburbs) operate against the reverse commuter, so people doing so are less common compared to those going the other way. However, these traditional schools of thought are changing, especially in Southern and Western US cities, where employment options tend to follow a more decentralized or polycentric model than Midwest or Eastern US cities. For instance, on the Santa Monica Freeway in Los Angeles, there are more vehicles in the morning peak hour heading westbound towards Santa Monica than into Downtown Los Angeles.An example of reverse commuting can be found in the Washington Metropolitan Area. Due to a combination of ample transit infrastructure and the height limit in downtown, employment options in the area follow a polycentric model, heavily focused in both Downtown and areas such as Arlington, Tysons, Bethesda, and Silver Spring. Companies desiring space in Washington often opt for space in Maryland or Virginia because of the great expense of office space downtown. As such, there are many people who live in Washington and work in Maryland and Virginia, either driving, taking Metrobus, Metrorail, or carpooling.

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  1. M

    Solving Esther's Morning Commute Problem

    Homework Statement Esther drove to work in the morning at an average speed of 40 miles per hour. She returned home in the evening along the same route and averaged 30 miles per hour. If Esther spent a total of one hour commuting to and from work how many miles did Esther drive to work in the...
  2. B

    Simultaneously unitarily diagonalizeable matrices commute

    Homework Statement Matrices A and B are simultaneously unitarily diagonalizeable. Prove that they commute. Homework Equations As A and B are simultaneously unitarily diagonalizeable, there exists a unitary matrix P such that P^{-1}AP = D_{1} and P^{-1}BP = D_{2}, where D_{1} and D_{2}...
  3. BobG

    Death Defying Commute: Harrowing Commute to Work

    You think your commute to work can be harrowing, how about this commute: Death Defying Commute. That dog seems so trusting. You just know that someday... Imagine moving to the other side of the bridge with your bed, your TV, your television, your stereo, the dog house... I've actually...
  4. A

    If two operators commute (eigenvector question)

    Suppose \Omega_1 and \Omega_2 satisfy [\Omega_1,\Omega_2]=0 and \Omega = \Omega_1 + \Omega_2. If \Psi_1 and \Psi_2 are eigenvectors of \Omega_1 and \Omega_2, respectively, don't we know that the (tensor?) product \Psi = \Psi_1 \Psi_2 is an eigenvector of \Omega? Also, if the \Psi_i are...
  5. haael

    Can Momentum and Spin Be Measured Simultaneously?

    I did some maths and I found that angular momentum operator does not commute with normal mometum: [ J_{\alpha \beta}, P_{\gamma}] = \eta_{\alpha \gamma} P_{\beta} - \eta_{\beta \gamma} P_{\alpha} Now, the "third" component of angular momentum: J_{z} := J_{x y} [J_{z}, P_{x}] = -P_{y} [J_{z}...
  6. L

    How to prove that if x^n*y=y*x^n, then x and y commute

    Let x and y be elements of a group. I can see that it works the other way, i.e. if x and y commute, then y*x^n = x^n*y...
  7. V

    Does the Riemman tensor and the covariant derivate commute?

    A random question - Does the Riemman tensor and the covariant derivate commute? a yes/no answer would suffice, but any explanation would be welcome:) From the equations, it looks as though they do for flat metrics - but if we have other manifolds, it seems to me that the Christoffel...
  8. D

    Hermitian operator-prove product of operators is Hermitian if they commute

    Hermitian operator--prove product of operators is Hermitian if they commute Homework Statement If A and B are Hermitian operators, prove that their product AB is Hermitian if and only if A and B commute. Homework Equations 1. A is Hermitian if, for any well-behaved functions f and g...
  9. V

    Commutators and Their Properties in Quantum Mechanics

    If we define: A_{j}=\omega \hat{x}_{j}+i \hat{p}_{j} and A^{+}_{j}=\omega \hat{x}_{j}-i \hat{p}_{j} Would it be true to say: [A_k , (A^{+}_{i}+A_i)(A^{+}_{j}-A_j)]=0 My reasoning is that, because [\hat{x}_{j}, \hat{p}_{i}]=0 the the ordering of the contents of commutation...
  10. 3

    If two permutations commute they are disjoint

    Homework Statement If \alpha,\beta\in S_n and if \alpha \beta = \beta \alpha, prove that \beta permutes those integers which are left fixed by \alpha. Show that \beta must be a power of \alpha when \alpha is a n-cycle. The other way round is easy to see, since if two cycles are disjoint...
  11. D

    Do L² and r² Commute in Quantum Mechanics?

    Hi The subject says it all. I'm wondering if [L^2,r^2] = 0 is true? regards Frímannn
  12. R

    What's considered a long commute time to consider residence?

    2 hours? (1 hour there and back)
  13. O

    What Makes the Middle of the Drawbridge the Highlight of Your Commute?

    http://photos-853.ll.facebook.com/photos-ll-sf2p/v236/27/91/575983853/n575983853_940536_3472.jpg The middle of the drawbridge - where the two platforms meet - is pointy (like f(x)=-|x|). So you get up a bit of speed on your bike as you approach the centre and then enjoy the weird...
  14. C

    Does every observable commute with the hamiltonian?

    I would guess that they would as every observable is a function of the q's and p's and as those commute with the hamiltonian I couldn't imagine an observable that wouldn't commute, however are there any other cases where an observable won't commute with the hamiltonian?
  15. T

    Kids Zip Line to School - Sure Beats the Commute!

    http://www.noob.us/miscellaneous/kids-ride-a-zip-line-to-go-to-school/ That's just awesome. It's like Six Flags every day, but without the accidents.
  16. edward

    What makes Stremnaya Road in Bolivia a popular route for mountain bikers?

    Stremnaya Road Bolivia. http://www.driftlive.com/dl/2006/12/11/stremnaya-road-in-bolivia/
  17. DaveC426913

    How do I only work 3.5 days a week but still have a full-time job?

    I live in one town on the weekend and work in another during the week, commuting only once each way per week. I do not work in my home town. I work four full days a week, yet in any given week I manage to spend as many days at home as I do at work. How do I manage this?
  18. S

    Finding Commuting Permutations in S_6 for alpha=(1 2 4 5)

    8 permutations that commute... Find 8 Permutations that commute with alpha=(1,2,4,5) I do not understand the concept of commuting with permutations.
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