1.200/11.544/ESD.21 Class Home

1.200/11.544/ESD.21 Transportation Systems Analysis

Fall 2007

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Instructors: Cynthia Barnhart, Amedeo R Odoni

TA: Sean Sweat

Lecture: TR 10:30-12:00 (5-134)
Recitation: M 4:00-5:00 (except 10/29, 11/26, and holidays) (3-343)

Description:

Problem-motivated introduction to methods, models, and tools for the analysis and design of transportation networks including their planning, operations, and control. Capacity of critical elements of transportation networks. Traffic flows and deterministic and probabilistic delay models. Formulation of optimization models for planning and scheduling of freight, transit, and airline systems and their solution using software packages. User- and system-optimal traffic assignment. Control of traffic flows on highways, urban grids, and airspace.

Announcements

PS6 Graded

PS6 is graded and ready to be picked up.

Average = 97
stDev = 7

Very good grades, but a few concerns:

2b
As q approaches infinity, x1 does not EQUAL 100% of q, but APPROACHES it

2e
Present data better. Do not show 6 decimal places. Do not center numbers.

4a
Effective Green Times of 23.3333 & 46.6666 are silly. Use 23 and 47. We are real world engineers, not theoretical physicists. You will find DRASTICALLY different answers if you use reasonable numbers. As such, I did not count off if you used the silly numbers because you had the methodological idea, but next time apply common sense as well by asking the question: What is practical to the real world?

The delay is not measured in hours. It is in vehicle-hours. Units are critical.

5a
Offering costs to the hundredths of a penny is not at all helpful.

5b
BE BRIEF. There is no reason to say in 200 words what you can say in 20.

Announced on 10 December 2007 4:40 a.m. by Sean Sweat

If You'd Like to Talk to Dr. Barnhart...

...on Monday or Tuesday before class, then just make sure to email her and schedule an appointment. Good luck studying - almost there!

Announced on 08 December 2007 2:48 a.m. by Sean Sweat

Recitation = Office Hours

Sorry for the late notice (i'll put a sign on the classroom door). I'm changing the recitation to office hours again for today and next week. I also have office hours Tuesday as usual.
-Sean

Announced on 03 December 2007 1:49 p.m. by Sean Sweat

Problem Set 6 has been posted

Problem Set 6 has been posted. It is due on Thursday, December 6 and we shall post solutions immediately thereafter in light of Quiz 2, scheduled for Tuesday, December 11.

I shall have my regular office hours on Wednesday, Nov. 28 and Wednesday, Dec. 5 from 3-5 PM.

Have a good Thanksgiving holiday and try to get some rest!

Amedeo Odoni

Announced on 21 November 2007 8:28 a.m. by Amedeo Odoni

Prof. Barnhart's Office Hours (11/21)

Prof. Barnhart won't be holding her normal office hours this Wednesday, but if anyone would like to meet with her, just send her an email to arrange an appointment. Have a great Thanksgiving!

Announced on 20 November 2007 8:12 p.m. by Sean Sweat

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