impacts of transportation, basic theory of traffic flow, advanced traffic flow.

Question 1

shlong

Answer 1

yes

Question 2

what percent of personal trips are made by private motor vehicle

Answer 2

75

Question 3

what are rons and why develop them

Answer 3

Roads of national significance. for economic growth , value for money. but Ironically
many of the RoNS projects are producing far lower economic evaluations (benefit/cost
ratios) than other transport projects being held back from funding.

Question 4

why is nz so dependent on road transport system.

Answer 4

Density of development is low.
resulting in high veh/person and high distance of travel.
also hilly terrain.
also cost of pertol relativly low compared with other countries.

Question 5

what is full hypothecation

Answer 5

where all the money gained from road user taxes and such are used back on the improvement of the roads and not on externailites (effects on non users) of the transport system.

Question 6

how much is NZs Gross National Product is associated with transport

Answer 6

33% dawg

Question 7

what percent does transport contribute to total consumer energy use

Answer 7

44 % energy

Question 8

300 people die

Answer 8

yes

Question 9

what is headway and how do you calculate it.

Answer 9

(time interval between arrivals of leading edges of successive
vehicles, at a point in space)
o mean headway = 1/q

Question 10

what is spacing and how do you calculate it

Answer 10

(distance between leading edges of successive vehicles, at a point in
time)
o mean spacing = 1/k

Question 11

what is local stability

Answer 11

the response of the (n+1)th vehicle to change in the motion of nth vehicle

Question 12

what is asymptotic stability

Answer 12

the manner in which fluctuation in motion of the lead vehicle is propagated
along the line of following vehicles

Question 13

with respect to local stability
what are the following conditions with respect to aT
 spacing is non-oscillatory if
 damped oscillation if
 undamped oscillation if 
 oscillation, increasing amplitude, if

Answer 13

non-oscillatory if (0 pi/2)

Question 14

what is DHV

Answer 14

design hourly volume

Question 15

what are the three aspects that influence traffic growth

Answer 15

1 normal growth, resulting from increasing population and vehicle ownership/use
(due to increasing wealth, say), which is not affected by changes to the road under
design;
2 diverted traffic, which results from existing traffic shifting from other roads to the
road under design, because the latter will be a more attractive alternative;
(3) induced traffic, which is new traffic, generated by the reduction in travel cost
resulting from the changes to the road under design.