Lec 31, Handout: Public passenger transport (objectives)

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Lec 31, Handout: Public passenger transport (objectives) Be familiar with mass transit classifications and characteristics Know how urban transport demands are classified Know typical bus route network types

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Lec 31, Handout: Public passenger transport (objectives). Be familiar with mass transit classifications and characteristics Know how urban transport demands are classified Know typical bus route network types. What we discuss in class today…. Mass transit classifications - PowerPoint PPT Presentation

Transcript of Lec 31, Handout: Public passenger transport (objectives)

Page 1: Lec 31, Handout: Public passenger transport (objectives)

Lec 31, Handout: Public passenger transport (objectives)

Be familiar with mass transit classifications and characteristics

Know how urban transport demands are classified

Know typical bus route network types

Page 2: Lec 31, Handout: Public passenger transport (objectives)

What we discuss in class today…

Mass transit classifications Transit system operations, service and

characteristics Urban transport demand classifications Transit service network types Video: The extensive bus transit system in

Curitiba, Brazil (An example of using an exclusive bus route systemone reason for its success)

Page 3: Lec 31, Handout: Public passenger transport (objectives)

Three ways to classify mass transit systems

Right of way ROW = the strip of land on which the transit vehicle operates:Category A: “Grade separated” or “exclusive” NY Subways, DC’s Metro, Monorail in Las Vegas, Bullet train systems in Japan, Guided buses (BRT) in Germany TRAX LRT between Sandy & 1300S (except some at-grade crossing)Category B: “Longitudinally fully separated” but “may have grade crossing” TRAX LRT between Delta Center & 1300SCategory C: “surface streets with mixed traffic” UTA buses Directly affected by traffic delays

Technology Mechanical features of the vehicles and the riding surface. (1) Support between the vehicle and the riding surface (rubber tires vs. steel wheels), (2) Steering of vehicles (driver vs. guided path), (3) Propulsion method (gasoline, electricity, LPG gas, gasoline/electricity hybrid, hydrogen) and (4) Means of controlling vehicles longitudinally (driver stay in a lane vs. rail follow the guided rails)

Type of service

(1) Short haul in CBD (Shuttles), (2) City transit (medium haul), and (3) Regional transit (long haul)

Page 4: Lec 31, Handout: Public passenger transport (objectives)

TRAX’s ROW

Runs on an old rail road ROW

Page 5: Lec 31, Handout: Public passenger transport (objectives)

Transit system operations, service, and characteristics

Operations (service supply)

Bus scheduling, crew rostering (assignment), running and supervision of vehicles, fare collection, and system maintenance

Service The transit system as experienced by its actual and potential users

Characteristics

Transit system characteristics are classified in four categories

1. System performance2. Level of service3. (Operational and service) impacts to the

community they serve: short-term (less congestion, pollution, noise, etc.) and long-term impacts (land values, economic activities, social environment, etc.)

4. Costs: investment (capital) costs and operating costs

Page 6: Lec 31, Handout: Public passenger transport (objectives)

Performance and LOS measures

System performance

Service frequency (departures/hr)

Operating speed (Average travel speed)

Reliability (% of vehicle arrivals with less than a fixed-time deviation from schedule)

Safety (No. of fatalities, injuries & property damages per xxx passenger-miles)

Line capacity (Max no. of persons that transit vehicles can carry past a point along the line like a flow rate)

Productive capacity = Operating speed x line capacityProductivity (veh-km, space-km, operating cost, etc.)

Utilization = the ratio of output to input (person-km/space-km)

Level of service (term project data)

Performance elements affecting users, such as operating speed, reliability, and safety Service quality, such as convenience and simplicity of using the system, comfort, aesthetics, cleanliness, and behavior of passengers

Page 7: Lec 31, Handout: Public passenger transport (objectives)

Travel demand classifications

FUN DOME FASHION

PLACE

SLC CBD

2. Trips along circumferential routes

4. Trips within CBD

3. Trips between and within local areas

5. Trips connecting major activity centers

1. Trips along the radial routes to CBD

This is a topic of CE565.

Page 8: Lec 31, Handout: Public passenger transport (objectives)

Public transport system classified by routing and scheduling typesSch

edulin

g (

freq

uency

of

serv

ice)

Routing (degree of coverage and access

Page 9: Lec 31, Handout: Public passenger transport (objectives)

Transit modes related to residential densityMode Service Min.

necessary residential density(DU/acre)

Remarks

Local bus

Min., 20 buses/day

Intermediate, 40

Frequent, 120

4

7

15

Varies as a function of downtown size and distance from residential area to downtown

Express bus

5 buses during 2-hr peak period

5-10 buses during 2-hr peak period

15 (avg density over 2-mi2)

3 (avg density over 20-mi2)

From 10 to 15 mi away to largest CBD

From 10-20 mi away to CBD larger than 20 million ft2 non residential space

Light rail 5-min headways or better during peak hour

9 (avg for a corridor of 25 to 100 mi2)

To CBD of 20 to 50 million ft2 of non residential space

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Network types

Grid networks Radial networks

Circumferential connections

Territorial networks

No connection between the lines in the suburbs

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Let’s check UTA’s system maps (cont)

Provo-Orem area (grid & territorial)

Major transfer points

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Let’s see how some large systems look like…

DC Metro (Radial)

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New York City Subway (radial)

Basically all lines go through mid/downtown Manhattan. Not much interaction between other boroughs.

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Tokyo Rail Systems map

Yamonote Line (loop line) connects major business centers in Tokyo.