QUESTION 3 Fill in the following blanks for different signal components: • The collection of multiple signal sections serving a particular movement is called signal • Signal • Signal ● Signal is used to restrict the signal indication to one lane only and not other lanes. houses all parts of a signal (lens, light, etc.) changes the colors indicated by signal lamps according to a fixed or variable plan.

The total lost time of a signal is 13 seconds. If the sum of the critical flow ratios, Yc, is 0.834, what is the optimal cycle time (rounded to the nearest second)?  Group of answer choices 128 sec 108 sec 148 sec 147 sec

Compute the minimum passing sight distance forthe following data. Speed of passing car – 90kph Speed of overtaken vehicle – 80 kph Time of initial maneuver – 4 sec Ave. acceleration – 2.4 kph/sec2 Time passing vehicle occupies left lane – 9 sec Distance between passing vehicle at the end of its maneuver and opposing vehicle – 80 m

Two detectors are placed 235 feet apart on the Taconic State Parkway. A vehicle activates the first loop 88.51 seconds, and activates the second loop at 91.38 seconds, how fast is the vehicle moving in miles per hour? Ansure

What is the first area of the temporary traffic control zone? O Maintenance Area Advanced Warning Area O Transition Area O Activity Area Which of the following is not a factor in determining the spacing of channelized devices? The number of through lanes The type of channelizing device The location of the devices Speed limit Which of the following is NOT a type of taper? Lane Shift Lane Closure Merging Downstream Two-Lane One-Way Tapers are use. O When the work vehicles can safely park on the side of the road O On one-way roadways For special events only O When flaggers are present

(show your solutions) Compute for the Average Speed for Control Point B-C. * A.24 kph B.None of the above C.25 kph D.30 kph E.28.8 kph

An intersection has a four-phase signal with the movements allowed in each phase and corresponding and saturation flow rates shown in the table below. Phase 1 2 3 4 Allowed movements EB L, WB L EB T/R, WB T/R SB L, SB T/R NB L, NB T/R Analysis flow rate 245, 230 veh/h 975, 1030 veh/h 255, 235 veh/h 225, 215 veh/h Saturation flow rate 1750, 1725 veh/h 3350, 3400 veh/h 1725, 1750 veh/h 1700, 1750 vehh Calculate the sum of the flow ratios for the critical lane groups. O 0.714 O 0.723 0.751 0.702

Based on the count data shown below, is a traffic signal justified under warrant 1 or warrant 2? The major road is in the E-W direction and minor road is in the N-S direction. Assume there are two lanes on all approaches and the major road speed limit is 35 mph. Hour Beginning 7 AM 8 AM 9 AM 10 AM 11 AM 12 PM 1 PM 2 PM 3 PM 4 PM 5 PM 6 PM SB Approach 321 289 161 139 167 281 256 226 204 239 243 227 Mean volume counts, each hour EB Approach 403 366 284 304 354 413 397 433 340 440 517 423 WB Approach 168 189 137 167 223 301 284 306 258 322 393 355

Basis of speed limit: A Average speed B Modal speed c) 50th percentile speed D 85th percentile speed

this is one question split by parts a and b