Term
| Identify the predominant functions of a Motorway |
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Definition
| long distance route for through traffic. |
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Term
| Identify the predominant functions of a Urban Arterial |
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Definition
| through traffic serving urban area. |
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Term
| Identify the predominant functions of a Collector |
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Definition
| distributes traffic between arterials and local road. |
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Term
| Identify the predominant functions of a Local road |
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Definition
| predominant function is for property access. |
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Term
Order these terms from top of heirarchy to bottom:
Motorway, Local road, Urban Arterial, Collector |
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Definition
-Motorway
-Urban Arterial
-Collector
-Local Road |
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Term
| What is a basic 4 term road heirarchy |
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Definition
motorway
urban arterial
collector
local road |
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Term
| Explain Level of service and what it can be used for |
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Definition
LOS represents comfort, convenience and ease of use, and is the attribute of value to drivers.
It can be used to influence route choice. |
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Term
Explain how you would use LOS to encourage use of
through traffic routes |
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Definition
To encourage use of
through traffic routes, a high LOS should be provided on those routes, with a
low LOS on alternative routes. |
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Term
| What are heirarchys structured according to? |
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Definition
hierarchies are structured according to
function not traffic volume or other characteristics. |
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Term
| It is expected that a motorway will have lower traffic volumes than some roads in a secondary network. Does this affect status of the motorway in the hierarchy and why? |
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Definition
No. The motorway is best suited for long-distance traffic whether or not it
carries a large volume of traffic. |
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Term
1,800 veh/h @ 100 km/h on 2 lanes calculate density
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Definition
q = kv
k = q/v
= 1,800 / (100 x 2)
= 9 veh/km/lane |
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Term
What is the level of service if the density of traffic is 9 veh/km/lane
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Definition
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Term
| What is the main determinant of Level Of Service? |
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Definition
| Traffic Density (k), in vehicles/km/lane |
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Term
if a motorway is closed, long distance traffic will need to use the
secondary network instead. Is this consistent with the roading hierarchy?
Explain your answer |
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Definition
No, because long-distance traffic will be mixing with local traffic, leading to
unnecessary conflict. |
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Term
describe two situations where a departure
from normal hierarchy principles can be justified. |
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Definition
- Emergency detours
- Where all vehicles slowed to walking pace.
-peak hour relief.
-road maintenance closures. |
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Term
| How should bus routes be designed |
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Definition
Bus route needs to maximise convenience for passengers, not for the bus
itself. It therefore can take whatever route achieves this, using arterial,
collector and local roads as required. |
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Term
| What is the coresponding density range in Vehicles/km/lane for freeways/motorways for Level of service A |
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Definition
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Term
| What is the coresponding density range in Vehicles/km/lane for freeways/motorways for Level of service B |
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Definition
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Term
| What is the coresponding density range in Vehicles/km/lane for freeways/motorways for Level of service C |
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Definition
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Term
| What is the coresponding density range in Vehicles/km/lane for freeways/motorways for Level of service D |
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Definition
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Term
| What is the coresponding density range in Vehicles/km/lane for freeways/motorways for Level of service E |
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Definition
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Term
| What is the coresponding density range in Vehicles/km/lane for freeways/motorways for Level of service F |
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Definition
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