101. The most efficient traffic signal system is________________? A. simultaneous system B. alternate system C. flexible progressive system D. simple progressive system ✅ The correct answer is option C.
102. Bitumen of grade 80/100 means______________? A. its penetration value is 8 mm B. its penetration value is 10 mm C. its penetration value is 8 to 10 mm D. its penetration value is 8 to 10 cm ✅ The correct answer is option C.
103. The desirable length of overtaking zone as per IRC recommendation is equal to________________? A. overtaking sight distance B. two times the overtaking sight distance C. three times the overtaking sight distance D. five times the overtaking sight distance ✅ The correct answer is option D.
104. The stopping sight distance depends upon_______________? A. total reaction time of driver B. speed of vehicle C. efficiency of brakes D. all of the above ✅ The correct answer is option D.
105. Bottom most layer of pavement is known as_____________? A. wearing course B. base course C. sub-base course D. subgrade ✅ The correct answer is option D.
106. Which of the following is considered to be the highest quality construction in the group of black top pavements ? A. mastic asphalt B. sheet asphalt C. bituminous carpet D. bituminous concrete ✅ The correct answer is option D.
107. The diagram which shows the approximate path of vehicles and pedestrians involved in accidents is known as___________________? A. spot maps B. pie charts C. condition diagram D. collision diagram ✅ The correct answer is option D.
108. The function of an expansion joint in rigid pavements is to______________? A. relieve warping stresses B. relieve shrinkage stresses C. resist stresses due to expansion D. allow free expansion ✅ The correct answer is option D.
109. Maximum number of vehicles can be parked with_______________? A. parallel parking B. 30° angle parking C. 45° angle parking D. 90° angle parking ✅ The correct answer is option D.
110. If an ascending gradient of 1 in 50 meets a descending gradient of 1 in 50, the length of summit curve for a stopping sight distance of 80 m will be_______________? A. zero B. 64m C. 80m D. 60m ✅ The correct answer is option D.