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Michael Schoenfeld
Problem Set B
Problem 1
Resources
Number
Additional Info
Waiting Room
9 seats
Average wait 20 minutes
Control Cashier
2 Cashiers
Handles license plate and registraiton, 15 minutes per request, 40% for this+ 60% take 5 minutes
Test Computer
2 computers
20 minutes per test, with 60% taking this test
Road Test Administrator
4 Administrators
80% of test takers, 60% of total incoming, 30 minutes per customer
A.) Capacity
Resource
Calculation
Capacity
# workers
Total Capacity
Waiting Room
60mins/hr*1/20cust/min
3 arrivals/hr
9
27
Control Cashier
40%registration/arrival*15min/cust*1/60hour/min*60%reg/arrival*5min*1/60hr/min
6.67 arrivals/hr
2
13.33
Test Computer
60%test taker/arrival * 20 minutes/test taker * 1hr/60min
5 arrivals/hr
2
10
Road Test Administrator
80% test takers*60% test takers/arrival*30*1hr/60min
4.17 arrivals/hr
4
16.67
B)
The bottleneck is the test computer. The total capacity of the system is 10 arrivals/hr.
The second smallest capacity is the road test administration.
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 Fall '08
 Lu

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