Public Goods and Common Resources 2835
118. A town engineer comes to the city council with a proposal to install a traffic light at a certain
intersection that currently has a stop sign. The benefit of the traffic light is increased safety
because the light will reduce the incidence of fatal traffic accidents by 50 percent per year.
Which of the following statements is correct?
a. The city council should vote to install the traffic light because the benefits will outweigh the
costs.
b. The city council should carefully evaluate the benefits of reduced fatalities against only the
explicit costs of the light.
c. The city council should carefully evaluate the benefits of reduced fatalities against the costs of
the light and of the extra time that drivers will spend waiting for a green light.
d. The costs will invariably outweigh the benefits.
119. Suppose that installing an overhead pedestrian walkway would cost a college town $150,000.
The walkway is expected to reduce the risk of fatality by 3 percent, and the cost of a human life
is estimated at $10 million. The town should
a. install the walkway because the estimated benefit is twice the cost.
b. install the walkway because the estimated benefit equals the cost.
c. not install the walkway, since the cost is twice the estimated benefit.
d. install the walkway, since the cost of even a single life is too great not to take action.