WorksheetsDPWH Blue Book
Total questions: 15
Worksheet time: 15mins
A ________ speed limit would only be appropriate on very high standard expressways, which have a low crash rate.
50 kph
80 kph
100 kph
120 kph
The capacity of a route can be affected by the following factors except
Number of lanes
Traffic Composition
Terrain and Road Gradient
Lay-bys position
Vehicles parked near intersections can obstruct the flow of turning traffic. Thus, angle parking should be prohibited within the minimum distances from the boundaries of intersecting roads:
6 m on both approach and exit sides
6 m on approach side, 3 m on exit side
12 m on both approach and exit sides
12 m on approach side, 9 m on exit side
The first aim of safe road design is to ensure that road users remain safely one the road. This depends on the following factors:
I. a sound road surface;
II. an adequate width or cross-section;
III. horizontal and vertical alignment;
IV. good visibility/sight distance;
V. delineation and signing;
VI. provision for pedestrians, pedal cyclists and people with disabilities;
VII. management of traffic conflicts at intersections: and
VIII. speed management
I, V, and VI only
II, III , and IV only
III, IV,VII, and VIII o
All of the above
Dependent on design speed and vehicle type. It is a major road safety design control when determining the horizontal and vertical geometric alignment for a new or rehabilitation design.
Object Height
Sight Distance
Driver Eye Height
Design Superelevation
For a two lane national road the minimum width is a total of
4.5 m
5.4 m
6.7 m
7.6 m
Principles of good design to reduce the likelihood of traffic accidents include:
I. Minimize the speed of vehicles at potential collision points;
II. Separate movements and points of conflict by channelization, or in some situations, prohibit certain movements;
III. Control movements to reduce the possibility of conflict;
IV. Clearly define vehicle paths by use of pavement markings;
V. Separate vehicle movements in time
I, II, and III only
III, IV, and V only
I, II, III, and IV only
All of the above
A conflict point occurs where two travel paths interact or cross. Safe intersection design uses the following principle:
I. Minimizing the number of conflict points;
II. Minimize the area of conflict;
III. Separating points of conflict:
IV. Giving preference to major movements; and
V. Minimizing relative speed of conflicting movements.
I and III only
II and IV only
I, II, III, and IV only
All of the above
The vectorial speed of convergence of the vehicles in a conflict maneuver.
Relative Speed
Control of Speed
Attaining Low Relative Speeds
Channelization
The _________ is mainly used for regulatory signs.
Octagon
Equilateral Triangle
Circle Symbol
Rectangle
The __________ is reserved exclusively for the STOP sign.
Octagon
Equilateral Triangle
Circle Symbol
Rectangle
Minimum offset from edge of traffic lane to the face of barrier.
1.75 m
1.50 m
1.10 m
0.60 m
When distances are shown on guide signs, the following rules shall apply:
I. The distance shall be shown in meters for distance up to 999m;
II. The distance shall be shown in 0.1km increments for distances from 1km to 4.9km;
III. The distance shall be shown in 0.5km increments for distances from 1km to 9.5km;
IV. To the nearest kilometer for greater distances.
I only
I and III only
I, II, and III only
All of the above
Ideal capacity of a road is ______ vehicles/hour (vph)
1,100
1,400
1,700
2,000
__________ at an intersection involves a the control of traffic by provision of traffic islands or pavement markings to direct the traffic into predetermined paths.
Channelization
Roundabout
Lay-by
Shoulder
