University of Minnesota - Twin Cities
Dr. Henry Liu
CE 3201 Homework #7 (Due April 2, 2008)
1. Problem 6.1 pp. 217, MKW.
University of Minnesota - Twin Cities 2. Problem 6.2 pp. 217, MKW.
Dr. Henry Liu
University of Minnesota - Twin Cities
Dr. Henry Liu
3
University of Minnesota - Twin Cities
Dr. Henry Liu
CE 3201 Homework #5 (Due March 12, 2008)
1. Problem 5.1 pp. 167, MKW.
University of Minnesota - Twin Cities 2. Problem 5.3, pp. 167, MKW.
Dr. Henry Liu
University of Minnesota - Twin Cities 3. Problem 5.
University of Minnesota - Twin Cities
Dr. Henry Liu
CE 3201 Homework #3 Solution 1. Problem 3.2 pp. 88, MKW.
University of Minnesota - Twin Cities
Dr. Henry Liu
2. Problem 3.8, pp. 88, MKW.
University of Minnesota - Twin Cities
Dr. Henry Liu
3. Problem 3.
Problem 4
1. A data set including real and perceived waiting time is provided (data.xls on the class website). You are asked to estimate the coefficients ( 0 , 1 ) using Data-analysis software provided by Excel (See the procedure in Appendix on the class
Let D denote the number of people buying tickets. Let Pr[W] denote the probability of winning the prize. Then D is a function of Pr[W] and we denote that as D(Pr[W]). Pr[W], in turn, is a function of D denoted by Pr[W](D). Demand: The number of people tha
University of Minnesota - Twin Cities
Dr. Henry Liu
CE 3201 Solution Homework #8 (Due April 16, 2008)
1. Problem 7.17 pp. 268, MKW.
University of Minnesota - Twin Cities
Dr. Henry Liu
2. Problem 7.28 pp. 269, MKW.
University of Minnesota - Twin Cities 3.
University of Minnesota CE 3201 Introduction to Transportation Engineering Name Midterm #3 I. Multiple Choices & Short Questions (4 points for each, total 40 points).
Spring 2008 Dr. Henry Liu May 7, 2008
1. Logit model can be derived under the assumption
University of Minnesota CE 3201 Introduction to Transportation Engineering Name Midterm #2 ID
Spring 2008 Dr. Henry Liu
I. Multiple Choices (4 points for each). Circle one letter in each question for your answer.
1. Assume a linear speed-density relations
University of Minnesota CE 3201 Introduction to Transportation Engineering Name Midterm #1 I. Multiple Choices (4 points for each, total 40 points). Instructions: Circle one letter in each question for your answer. 1. The three principal resisting forces
CE 3102 Fall 2008 Thought Problem 17 Signal Timing, and Estimating Means
In timing a traffic signal, the duration of a yellow interval should be such that it eliminates the dilemma zone, where a driver can neither stop without entering the intersection, n
CE 3102 Fall 2008 Thought Problem 16 Off Road
In traffic accident reconstruction, we often have to estimate or infer the values of unmeasured quantities, such as a vehicles initial speed, from quantities we can measure, such as the length of a radius of i
CE 3102 Fall 2008 Thought Problem 15 From a number of laboratory tests on beams of A285 steel, the number of loading cycles to fatigue failure appear to be well-modeled by a lognormal distribution with an estimated mean of 430,000 cycles and a standard de
CE 3102 Fall 2008 Thought Problem 14 Functions of Random Variables
15
Frequency
10
5
0 0 100 200 300
headway
The graph above shows a frequency distribution for vehicle headways on Irving Ave., between Lincoln and Franklin, in Minneapolis. (a) Identify an
CE 3102 Fall 2008 Thought Problem 13 Speeds on a road are normally distributed, with a mean of 38 mph, and a standard deviation of 6 mph. What is the 85th percentile speed on this road?
CE 3102 Fall 2008 Though Problem 13 Instructors Partial Solution Let
CE 3120 Fall 2008 Thought Problem 12 Footing Loads Suppose that a foundation engineer wanting to estimate the long-term settlement of a footing states that the total sustained load on the footing is the sum of the dead load of the structure (the weight of
CE 3102 Fall 2008 Thought Problem 11 Introducing the Normal Distribution An automobile manufacturer is considering recalling an automobile model to correct a manufacturing defect. Based on a sample of inspected vehicles, it has been determined that the de
CE 3102 Fall 2008 Thought Problem 10 Temperature Conversion Youve made a set of measurements of a lakes temperature, and found that they appear to vary randomly from day to day, with a mean of 12o Celsius, and a variance of 2. You plan to present these fi
CE 3102 Fall 2008 Thought Problem 9 Light Traffic and the Poisson Process A traffic engineer is designing a traffic signal for an intersection between a major street and a minor street. One of the constraints that must be addressed is that on the minor st
CE 3102 Fall 2008 Thought Problem 9 Light Traffic and the Poisson Process A traffic engineer is designing a traffic signal for an intersection between a major street and a minor street. One of the constraints that must be addressed is that on the minor st
CE 3102 Fall 2008 Thought Problem 8 Rare Events A 1-mile long section of rural highway has experienced 6 traffic crashes in the last 5 years. If statewide the probability a vehicle crashes while traversing a 1-mile section of rural highway is 2.0x10-6, if
CE 3102 Fall 2008 Thought Problem 7 Turning Volumes At an intersection of two one-way streets, vehicles arrive on the northbound approach and can either turn left or go straight through. If a total of n vehicles arrive during a signal cycle, if the probab
CE 3102 Fall 2008 Thought Problem 6 Waiting for a Bus (The Uniform Distribution) Suppose you take a bus to school, which you typically catch sometime between 7:00 AM and 9:00 AM. During this period, a bus comes by you stop frequently, every 10 minutes. Be
CE 3102 Thought Problem 5 Introducing Random Variables Two types of vehicles use a road, passenger cars and trucks. Observations have indicated that, over a 2-minute interval, the different frequencies of trucks and passenger cars occur with the following
CE3120 Spring 2008 Thought Problem 4 Pile Driving When driving piles for footings or foundations you want the piles to extend from the surface down to bedrock. Sometimes, however, a pile will strike rock through which it cannot be driven. Such interrupted
CE 3102 Fall 2008 Thought Problem 3b Prosecutors Fallacy? A crime has been committed, and the perpetrator left DNA evidence at the scene. A suspect has been identified, and a sample of the suspects DNA matches the DNA left at the crime scene. The testing
CE 3102 Fall 2008 Thought Problem 3 Bayes Theorem You recently started a new job as a construction engineer for a small design/construction firm. Past experience on your companys job sites indicates that compaction practices are flawed. About 5 percent of
CE 3102 Fall, 2008 Thought Problem 2 Those of you whove taken CE 3201 might recall that traffic engineers get considerable use out of the stopping distance equation:
D = VT + V2 2 g
D = stopping distance (feet), V = vehicle speed (feet/second) T = drivers