Critical Approach Speed. Somehow, a TCD has never been installed at the corner of Crowell and Ft. Jekk Streets in a residential neighborhood. The longtime residents have gotten used to it, but new families are wondering how safe an uncontrolled intersection can be. They contactthecity. The city sends an intern to the intersection. The intern thinks the EB approach on Crowell is the one most likely to need a TCD. so he takes the following measurements:
Ft. Jekk is 31 feet wide; Crowell is 23 feet wide.
34 feet from building on NW corner to curb on SB Ft. Jekk
20 feet from building on SW corner to curb on NB Ft. Jekk
21 feel from building on NW corner to curb on EB Crowell
18 feet from building on SW corner to curb on EB Crowell
Speed on Ft. Jekk = 31 mph
Parking is allowed on both streets
According to the CAS method, should a TCD be installed on EB Crowell at Ft. Jekk? If so, should it be a Stop sign or a Yield sign? Show clearly how you carried out the steps in the CAS method.
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