Chapter 9 Flashcards
What are the urban transport modes? define and characterise
Passenger: Private car • Car, bike, NMT • Public roads/lanes • Own vehicle, own use For hire • Metered taxi, uber • No fixed route/schedule • Fare can vary • Demand responsive Public transport • Scheduled • Fixed route and fares Freight
Public transport modes can be defined and characterized by:
Right of way
Technology: o Support o Guidance o Propulsion o Control
Types of service:
o Types of routes
o Types of operation (stopping schedule)
o Time of operation
Right of way in detail (Public transport characteristic) (Categories)
Most important factor that determines performance and cost of mode:
• Category C – lowest cost
• Category B
• Category A – highest cost
Categories distinguished by the degree of their separation from other traffic
Category C (ROW)
• Mixed with other traffic o Buses/taxi o Influenced by congestion o Adheres to road laws o Low investment cost as don’t need to provide infrastructure
Category B (ROW)
- Separated by curbs, barriers, separate lanes but still contact exists through grade crossings
- HOV lanes
- Specific time of day
- Bus lanes on N2
- MyCiti
Category A (ROW)
- No contact with other traffic
- Grade separated/exclusive
- Never stop for other traffic
- Tran, hyperloop
Technology in detail (Public transport characteristic)
Mechanical features of the vehicles and way
1. Support:
• Vertical vehicle contact between vehicle riding surface (rubber tyre on asphalt)
2. Guidance:
• Lateral vehicle guidance
• Steered
• Guided
• Combination
3. Propulsion:
• Types: ICE, electric
• Method of transferring tractive force: friction, magnetic, cable, rotor, propellor
4. Control: • Manual • Automatic • Combination
Types of service in detail (Public transport characteristic)
- Routes
a. Short haul (small area, high density)
b. City transit (transit serving entire city)
c. Regional transit (long, high speed lines, few stops) - Type of operation
a. Local (all stop)
b. Accelerated (skip-stop)
c. Express (few stop) - Time of service
a. Regular (all day)
b. Commuter/peak hour
c. Special/irregular (events)
define and list the Generic classes of transit modes:
Generic classification mainly based on ROW category: look at figure 2.1
- Street transit (surface transit) (category C)
a. Low reliability – congestion
b. Low speed - Semi rapid transit (Category B but also A and C)
a. Speed dependent on ROW separation and technology - Rapid transit (Category A)
a. Exclusively category A
b. High speed, capacity, reliability, safety
c. Expensive
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Steps 1-10 (understand concepts) (name and explain)
notes
Understand different transit modes and how they differ in ROW, technology, and operations
notes
Make recommendations for scenarios of e.g., high-density, high-volume demand areas
notes
characteristics of flexibility?
- Suitable for carrying more than one commodity?
- Fixed to way?
- Capacity be adapted?
What does future technology aim to solve?
- Greenhouse gas
- Preventable deaths
- Road congestion
- Security
- Poverty
- Speed
