Highway Engineering
In the penetration macadam construction, the bitumen is

Sprayed after the aggregates are spread and compacted
Sprayed before the aggregates are spread and compacted
None of these
Premixed with aggregates and then spread

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Highway Engineering
The provision of traffic signals at intersections

reduces right angled and rear end collisions
reduces right angled collisions but may increase rear end collisions
reduces rear end collisions but may increase right angled collisions
increases right angled and rear end collisions

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