Adeveloper has requested permission to build a large retail store at a location adjacent to the intersection of an undivided four-lane major road and a two-lane minor road. traffic on the minor road is controlled by a stop sign. the speed limits are 35 and 50 mi/h on the minor and major roads, respectively. the building is to be located at a distance of 65 ft from the near lane of one of the approaches of the minor road. determine the minimum sight distance required on the major road for the stopped vehicle on the minor road to safely turn right onto the major road. design vehicle is a single-unit truck. lanes on the major road are 12 ft wide. hint: adjust for the number of lanes. given: time gap for single-unit truck for right turn = 8.5 sec time adjustment for number of lanes = 0.7 sec

676 ft

Explanation:

Minimum sight distance, d_min

d_min = 1.47 * v_max * t_total where v_max is maximum velocity in mi/h, t_total is total time

v_max is given as 50 mi/h

t_total is sum of time for right-turn and adjustment time=8.5+0.7=9.2 seconds

Substituting these figures we obtain d_min=1.47*50*9.2=676.2 ft

For practical purposes, this distance is taken as 676 ft

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answer:

science is the study of the nature and behavior of natural things and the knowledge that we obtain about them. a science is a particular branch of science such as physics, chemistry, or biology. physics is the best example of a science which has developed strong, abstract theories.

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