1. Which of the following statements CANNOT be used to describe free flow speed (u_f) of a traffic stream?
   

1. 1. u_f is the speed when flow is negligible
      

   
   
   

   2. u_f is the speed when density is negligible
      

   
   
   

   3. u_f is affected by geometry and surface conditions of the road
      

   
   
   

   4. u_f is the speed at which flow is maximum and density is optimum

   
   
   

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1. View Hint View Answer Discuss in Forum

   u_f is the speed at which flow is negligible and density is also negligible.

   Correct Option: D

   u_f is the speed at which flow is negligible and density is also negligible.

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2. The average daily traffic on a stretch of road is 300 commercial vehicles per lane per day. Design traffic repetitions for 10 years when vehicle damage factor is 2.5 and traffic growth rate is 7% is
   

1. 1. 3.8 msa
      

   
   
   

   2. 23.5 msa
      

   
   
   

   3. 45.4 msa
      

   
   
   

   4. 16 msa

   
   
   

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1. View Hint View Answer Discuss in Forum

   N =	365[(1 + r)n - 1]A.D.F
   	r

   
   

   =	365[(1 + 0.07)10 - 1] + 300 × 1 × 2.5
   	0.07

   
   = 3782253 ≈ 3.8 msa

   Correct Option: A

   N =	365[(1 + r)n - 1]A.D.F
   	r

   
   

   =	365[(1 + 0.07)10 - 1] + 300 × 1 × 2.5
   	0.07

   
   = 3782253 ≈ 3.8 msa

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3. The following statements are made related to the lengths of turning lanes at signalized intersections :
   (i) 1.5 times the average number of vehicles (by vehicle type) that would store in turning lane per cycle during the peak hour
   (ii) 2 times the average number of vehicles (by vehicle type) that would store in turning lane per cycle during the peak hour
   (iii) Average number of vehicles (by vehicle type) that would store in the adjacent through lane per cycle during the peak hour
   (iv) Average number of vehicles (by vehicle type) that would store in all lanes per cycle during the peak hour As per the IRC recommendations, the correct choice for design length of storage lanes is
   

1. 1. Maximum of (ii and iii)
      

   
   
   

   2. Maximum of (i and iii)
      

   
   
   

   3. Average of (i and iii)
      

   
   
   

   4. Only (iv)

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: A

   NA

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4. A traffic stream in a particular direction of a two lane road is moving with a constant speed of 50 kmph, with an average headway of 52 seconds. The longitudinal distance between two consecutive vehicle is
   

1. 1. 30 m
      

   
   
   

   2. 35 m
      

   
   
   

   3. 38 m
      

   
   
   

   4. 42 m

   
   
   

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1. View Hint View Answer Discuss in Forum

   Space head way = V × t
   

   =		50 ×	5		× 2.52 = 35 m
   			18

   Correct Option: B

   Space head way = V × t
   

   =		50 ×	5		× 2.52 = 35 m
   			18

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5. For two major roads with divided carriage way crossing at right angle, a full clover leaf interchange with four indirect ramps is provided. Following statements are made on turning movements of vehicles to all directions from both roads. Identify the correct statement.
   

1. 1. Merging from left is possible, but diverging to left is not possible
      

   
   
   

   2. Both merging from left and diverging to left are possible
      

   
   
   

   3. Merging from left is not possible, but diverging to left is possible
      

   
   
   

   4. Neither merging from left nor diverging to left is possible

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: B

   NA

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