the following data are gathered on a 20-mile long expressway for a period of 120 days. YEAR AVERAGE DAILY TRAFFIC NUMBER OF ACCIDENTS 2010 2753 100 2011 1857 120 2012 1875 95 2013 2548 115 2014 1995 135 2015 2354 150 2016 2158 85 a. Determine in which year has the lowest accident rate per million entering vehicle. b. Determine in which year has the highest accident rate per million entering vehicle. c. Determine the total accident rate per million entering vehicle.

the following data are gathered on a 20-mile long expressway for a period of 120 days. YEAR AVERAGE DAILY TRAFFIC NUMBER OF ACCIDENTS 2010 2753 100 2011 1857 120 2012 1875 95 2013 2548 115 2014 1995 135 2015 2354 150 2016 2158 85 a. Determine in which year has the lowest accident rate per million entering vehicle. b. Determine in which year has the highest accident rate per million entering vehicle. c. Determine the total accident rate per million entering vehicle.

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Concept explainers

Capacity and Level of Service at Intersections

The term capacity is associated with transportation engineering. Capacity helps to understand how many pedestrians or vehicles can be handled by a transport facility. Level of service is also a term associated with transportation engineering. The level of service indicates the performance of the transport facility.

Question

SITUATION 3: According to the Department of Transportation
the following data are gathered on a 20-mile long expressway
for a period of 120 days.
YEAR
AVERAGE DAILY TRAFFIC
NUMBER OF ACCIDENTS
2010
2753
100
2011
1857
120
2012
1875
95
2013
2548
115
2014
1995
135
2015
2354
150
2016
2158
85
a. Determine in which year has the lowest accident rate per
million entering vehicle.
b. Determine in which year has the highest accident rate per
million entering vehicle.
c. Determine the total accident rate per million entering
vehicle.
d. In what number of accidents will lower the accident rate per
million entering vehicles to 50%.
e. If the length of expressway considered is shorten to 10-
miles and the N=1 year. Determine the accident rate per
million entering vehicle.

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