1.Which given formula gives the volume of traffic in westbound direction?
a) qw = (ma+mo-mp)/(ta+tw)
b) qw = (ma+mo-mp)/(ta-tw)
c) qw = (ma-mo-mp)/(ta+tw)
d) qw = (ma+mo+mp)/(ta+tw)
Explanation: qw = (ma+mo-mp)/(ta+tw), is the formula that gives the volume of traffic in westbound direction. Here, qw = volume of traffic in westbound direction, ma = number of vehicle travelling east in opposite lane, mo = number of vehicles that overtake the test car, mp = number of vehicles that the test car passes when it is travelling westwards, ta = time taken to travel to east and tw = time taken to travel to west.
2. In which method a test vehicle is selected at random?
a) Elevated observation method
b) Average speed method
c) License plate method
d) Floating car method
Explanation: Elevated observation method is a Travel Time and Delay Study method which selects a test vehicle at random. Here observation is done from a high building or an elevated point from where the whole test route is clearly visible.
3.Photographic method is suitable only for long test sections.
a) True
b) False
Explanation: The statement, “Photographic method is suitable only for long test sections” is false. “Photographic method is suitable only for short test sections’’ is the true statement. It is useful for the study of the interrelationship between speeds, spacing, acceleration rates, merging and crossing manoeuvres, etc.
4. Which travel time and delay study method is usually adopted in a farm or an establishment?
a) Photographic method
b) Elevated observation method
c) License plate method
d) Interview method
Explanation: Interview method is usually adopted large quantity of material is required in limited time and at little cost for field observation. These are preferably conducted where there is a farm or an establishment. Employees are asked to document their travel time to and from work.
5. Average travel time in westbound direction is obtained from which of the given formula?
a) tw(avg) = tw-((mo-mp)/qw)
b) tw(avg) = tw+((mo-mp)/qw)
c) tw(avg) = tw-((mo-mp)+qw)
d) tw(avg) = tw-((mo+mp)/qw)
Explanation: Average travel time in westbound direction is obtained from,
tw(avg) = tw-((mo-mp)/qw)
where, tw(avg) = Average travel time in westbound direction
mo = number of vehicles that overtake the test car
mp = number of vehicles that the test car passes when it is travelling westwards
tw = time taken to travel to the west.
6. Which method is applicable for under saturated signalized intersection?
a) Highway Capacity Manual 2000
b) Photographic method
c) License plate method
d) Elevated observation method
Explanation: Highway Capacity Manual 2000 is travel time and delay study method which is applicable for under saturated signalized intersection. Queue buildup in over-saturated conditions makes the method unfeasible.
7. What is the correct order of procedure in a License plate method?
a) Portable computer, Manual, Video with manual transcription, Video with character recognition
b) Manual, Portable computer, Video with manual transcription, Video with character recognition
c) Video with manual transcription, Video with character recognition, Portable computer, Manual
d) Video with manual transcription, Video with character recognition, Manual, Portable computer
Explanation: The correct order of procedure in a License plate method is Manual, Portable computer, Video with manual transcription, Video with character recognition. This method is employed where only overall speed value is needed.
8.What is Passenger Car Unit used for?
a) to evaluate the traffic-flow rate on a highway
b) to record the number of passengers in each car
c) to record the number of passengers in each section of road
d) to evaluate the density of passengers
Explanation: Passenger Car Unit used to evaluate the traffic-flow rate on a highway. Passenger Car Unit is also generally known as passenger car equivalent. PCU is a metric used in transportation engineering.
9. What is the Passenger Car Unit (PCU) value of a motorcycle?
a) 1
b) 0.5
c) 0.2
d) 0.3
Explanation: The Passenger Car Unit (PCU) value of a motorcycle is 0.5. 1 and 0.2 are the Passenger Car Unit values of car and bicycle respectively.
10. What is the unit of highway capacity?
a) Veh/hr
b) PCU/hr
c) Veh/hr/section of road
d) PCU/section of road
Explanation: PCU/hr is the unit of highway capacity. Highway Capacity is the maximum traffic flow that can be accommodated in a highway during a given time period under existing roadway, traffic and control conditions.