Highway engineering Archives

1. With increase in speed of the traffic stream, the minimum spacing of vehicles A. increases B. decreases C. first decreases and then increases after reaching a minimum value at optimum speed D. first increases and then decreases after reaching a maximum value at optimum speed

increases

decreases

first decreases and then increases after reaching a minimum value at optimum speed

first increases and then decreases after reaching a maximum value at optimum speed

Detailed SolutionWith increase in speed of the traffic stream, the minimum spacing of vehicles A. increases B. decreases C. first decreases and then increases after reaching a minimum value at optimum speed D. first increases and then decreases after reaching a maximum value at optimum speed

2. The aggregates required for one kilometer length of water bound macadam road per meter width and for 10 mm thickness is A. 8 cubic meter B. 10 cubic meter C. 12 cubic meter D. 15 cubic meter

8 cubic meter

10 cubic meter

12 cubic meter

15 cubic meter

Detailed SolutionThe aggregates required for one kilometer length of water bound macadam road per meter width and for 10 mm thickness is A. 8 cubic meter B. 10 cubic meter C. 12 cubic meter D. 15 cubic meter

3. For rapid curing cutbacks, the oil used is A. gasoline B. kerosene oil C. light diesel D. heavy diesel

gasoline

kerosene oil

light diesel

heavy diesel

Detailed SolutionFor rapid curing cutbacks, the oil used is A. gasoline B. kerosene oil C. light diesel D. heavy diesel

4. Reaction time of a driver A. increases with increase in speed B. decreases with increase in speed C. is same for all speeds D. none of the above

increases with increase in speed

decreases with increase in speed

is same for all speeds

none of the above

Detailed SolutionReaction time of a driver A. increases with increase in speed B. decreases with increase in speed C. is same for all speeds D. none of the above

5. Rigidity factor for a tyre pressure greater than 7 kg/cm2 is A. Equal to 1 B. Less than 1 C. Greater than 1 D. Zero

Equal to 1

Less than 1

Greater than 1

Zero

Detailed SolutionRigidity factor for a tyre pressure greater than 7 kg/cm2 is A. Equal to 1 B. Less than 1 C. Greater than 1 D. Zero

6. The terrain may be classified as rolling terrain if the cross slope of land is A. upto 10% B. between 10% and 25% C. between 25% and 60% D. more than 60%

upto 10%

between 10% and 25%

between 25% and 60%

more than 60%

Detailed SolutionThe terrain may be classified as rolling terrain if the cross slope of land is A. upto 10% B. between 10% and 25% C. between 25% and 60% D. more than 60%

7. The most efficient traffic signal system is A. simultaneous system B. alternate system C. flexible progressive system D. simple progressive system

simultaneous system

alternate system

flexible progressive system

simple progressive system

Detailed SolutionThe most efficient traffic signal system is A. simultaneous system B. alternate system C. flexible progressive system D. simple progressive system

8. As per IRC recommendations, the maximum limit of super elevation for mixed traffic in plain terrain is A. 1 in 15 B. 1 in 12.5 C. 1 in 10 D. equal to camber

1 in 15

1 in 12.5

1 in 10

equal to camber

Detailed SolutionAs per IRC recommendations, the maximum limit of super elevation for mixed traffic in plain terrain is A. 1 in 15 B. 1 in 12.5 C. 1 in 10 D. equal to camber

9. If b is the wheel track of a vehicle and h is the height of centre of gravity above road surface, then to avoid overturning and lateral skidding on a horizontal curve, the centrifugal ratio should always be A. Less than $$\frac{{\text{b}}}{{2{\text{h}}}}$$ and greater than co-efficient of lateral friction B. Less than $$\frac{{\text{b}}}{{2{\text{h}}}}$$ and also less than co-efficient of lateral friction C. Greater than $$\frac{{\text{b}}}{{2{\text{h}}}}$$ and less than co-efficient of lateral friction D. Greater than $$\frac{{\text{b}}}{{2{\text{h}}}}$$ and also greater than coefficient of lateral friction

Less than $$rac{{ ext{b}}}{{2{ ext{h}}}}$$ and greater than co-efficient of lateral friction

Less than $$rac{{ ext{b}}}{{2{ ext{h}}}}$$ and also less than co-efficient of lateral friction

Greater than $$rac{{ ext{b}}}{{2{ ext{h}}}}$$ and less than co-efficient of lateral friction

Greater than $$rac{{ ext{b}}}{{2{ ext{h}}}}$$ and also greater than coefficient of lateral friction

Detailed SolutionIf b is the wheel track of a vehicle and h is the height of centre of gravity above road surface, then to avoid overturning and lateral skidding on a horizontal curve, the centrifugal ratio should always be A. Less than $$\frac{{\text{b}}}{{2{\text{h}}}}$$ and greater than co-efficient of lateral friction B. Less than $$\frac{{\text{b}}}{{2{\text{h}}}}$$ and also less than co-efficient of lateral friction C. Greater than $$\frac{{\text{b}}}{{2{\text{h}}}}$$ and less than co-efficient of lateral friction D. Greater than $$\frac{{\text{b}}}{{2{\text{h}}}}$$ and also greater than coefficient of lateral friction