Problem 3 An engineer wishing to determine whether there is a statistically significant difference between the average speed of passenger cars and that of large trucks on a section of highway, collected the data shown below. Determine whether the engineer can conclude that the average speed of large trucks is the same as that for passenger cars. In other words, is the average speed of the large trucks significantly different than the average speed of the passenger cars? (0.50 pts) You must show your work. (0.50 pts)

A driver is traveling at 55 mi/h on a wet road. An object is spotted on the road 450 ftahead and the driver is able to come to a stop just before hitting the object. Assumingstandard perception/reaction time, determine the grade of the road.

6. (20 points) The flow rate for each 15-minute interval from 4:00-7:00pm is given below. (You may use MS Excel). a. Determine when the peak hour begins and ends. (hint: find the peak hour volume) b. Calculate the Peak Hour Factor (PHF). (hint: only one value)

5. (10 points) The trip generation results are estimated trip productions and attractions for both internal and external TAZs. The trip generation results for 20 internal TAZs and 5 external TAZs are summarized in Table 4-1. Zone 1 to Zone 20 are internal TAZs and Zone 101 to 105 are external TAZs. Please balance the productions and attractions for each TAZ and show the balanced productions and attractions in the Table 4-2 below.

2,12 A rear-wheel-drive car weighs 3600 lb, has 15-inch-radius wheels, a drivetrain efficiency of 95%, and an engine that develops 520 ft-lb of torque. Its wheelbase is 8.2 ft,and the center of gravity is 18 inches above the road surface and 3.3 ft behind the front axle. What is the lowest gear reduction ratio that would allow this car to achieve the highest possible acceleration from rest on good, dry pavement?

An intersection has a three-phase signal with the movements allowed in each phase and corresponding analysis and saturation flow rates shown in Table 7.6. Calculate the sum of the flow ratios for the critical lane groups.

6.The radius of a simple curve is twice its tangent distance. What is the angle of intersection? A. 51°  B. 53°  C. 49°  D. 47° 

3. A driver takes 3.5 s to react to a complex situation. How far does the vehicle travel before the driver initiates a physical response to the situation (i.e., putting his or her foot on the brake)? Plot the results for speeds ranging from 30 to 70 mi/h (in 5-mi/h increments).

Match the following dimensions for the SU Truck (shown): Minimum Design Turning Radius Centerline Turning Radius Minimum Inside Radius WB Path of front overhang

Problem 1 You are given the following information for 20 Office buildings located in downtown Brooklyn. (Refer to table below). Using Excel estimate the following: 1. Average office building space (in sq. ft.). (1/10 pts) 2. Average number of employees per building. (1/10 pts) 3. Total number of person-trips which use auto mode (assuming 15% are auto users). Note: Each employee makes two trips per day. (1/10 pts) 4. Total number of person-trips which use bus mode (assuming 15% are bus users). (1/10 pts) 5. Total number of person-trips which use the subway mode (assuming 60% are subway users). (1/10 pts) 6. Total number of person-trips which use the rail mode (LIRR) (assuming are 10% rail users). (1/10 pts) 7. Vehicle-trips per building (auto + bus) assuming auto occupancy of 1.25 persons/auto and a bus occupancy of 40 persons/bus. (1/10 pts) 8. Plot a scatter chart of office building space (sq. ft.) on X-axis vs. total number of vehicle-trips on Y-axis. (1/10 pts) 9. Calculate a best-fit linear regression equation and graph/trendline which can be used to estimate future planned developments of this type. Make sure to fit a model whose y-intercept is zero (i.e., when size of building is zero the vehicle-trips should also be zero. (1/10 pts) 10.Estimate the number of vehicle-trips for a planned office building of 280,000 sq.ft. using the generated regression equation. (1/10 pts)