DPWH MANUAL (TRANSPORTATION FACILITIES)

Question 1

It refers to establishment of horizontal and vertical alignments and cross section, based on considerations such as operating characteristics of vehicles, design standards, and drainage.

Answer 1

Geometric Design

Question 2

The primary consideration in the design of geometric cross sections for highways, runways, and taxiways is?

Answer 2

Drainage

Question 3

It is the distance required to see an object 0.15 m high on the roadway.

Answer 3

Stopping Sight Distance

Question 4

It is the distance required to see an oncoming vehicle of a certain minimum size.

Answer 4

Passing Sight Distance

Question 5

Defined as the maximum safe speed that can be maintained over a specified section of highway when conditions are so favorable that the design features of the highway govern.

Answer 5

Design Speed

Question 6

It refers to drawing, usually accompanied by notes, of various aspects or components of the design.

Answer 6

Plans

Question 7

These are written instructions detailing how the facility is to be constructed.

Answer 7

Specifications

Question 8

It include cost estimates for various parts of the project and are used to evaluate the acceptability of bids and the financial feasibility of the project.

Answer 8

Estimates

Question 9

This is a drawing of the facility as it would look to an observer directly above it.

Answer 9

Plan View

Question 10

This drawing has elevation as its vertical axis, and horizontal distance, as measured along the centerline of the facility, as its horizontal axis.

Answer 10

Profile

Question 11

This view has elevation as its vertical axis and horizontal distance, measured perpendicular to the centerline, as its horizontal axis.

Answer 11

Geometric Cross Section

Question 12

This applies to curved facilities, such as highways or railways, only.

Answer 12

Superelevation Diagram

Question 13

Occur when vehicles enter a traffic stream

Answer 13

Merging conflicts

Question 14

Occur when vehicles leave the traffic stream

Answer 14

Diverging conflicts

Question 15

Occur when vehicles cross paths by first merging and then diverging

Answer 15

Weaving conflicts

Question 16

Occur when they cross paths directly

Answer 16

Crossing conflicts

Question 17

There are three basic ways of resolving crossing conflicts:

Answer 17

1. Time sharing solutions
2. Space-sharing solutions
3. Grade-separation solutions