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Bus Lane Capacity3 passengers/hour/direction BUS OPERATED AS TRAIN? Bus Lane Tram / LRTMetro BRT 50000
Citation preview
Bus Lane Capacity 1
BUS LANE
CAPACITY
Bus Lane Capacity 2
passengers/hour/direction
6000 15000
Bus Lane Tram / LRT Metro
CAPACITY DEFAULTS 30 YEARS AGO
Bus Lane Capacity 3
passengers/hour/direction
BUS OPERATED AS TRAIN?
6000 15000
Bus Lane Tram / LRT Metro BRT
50000
Bus Lane Capacity 4
BUS LANE
CAPACITY
Bus Lane Capacity 5
Bug Capacity Problem
CAN WE FIND OUT HOW MANY BUGS FIT INSIDE
A BOX?SURE! ALL WE NEED IS A PEN,
PAPER AND SOME MINUTES
Bus Lane Capacity 6
Bug Capacity Problem
Bus Lane Capacity 7
Bug Capacity Problem
Bus Lane Capacity 8
Bug Capacity Problem
Bus Lane Capacity 9
Bug Capacity Problem
1,2,3…17,18,19…45,46,47…
101,108,111…
Bus Lane Capacity 10
Bug Capacity Problem
3025,3026, 3027! 3027 BUGS!
DID YOU JUST JUMP FROM 1890
TO 1981?
DO YOU THINK SO? IF I DID, THERE ARE
JUST…2937 BUGS!
Bus Lane Capacity 11
Bug Capacity Problem
OH, WE’LL NEVER KNOW A BOX CAPACITY…
WHAT IF WE PLACE AN ELETRONIC
BUG COUNTER AT DOOR?
WHAT IF WE ASK FOR HELP?
Bus Lane Capacity 12
Operational CAPACITY
Co= x * 3600
10+L/610*(L-3)
+ Ren*t1
(pas/hour)
Co = operational capacity (passengers/hour-direction)
x = projected saturation
L = bus length (in meters)
Ren = bus stop boarding ratio (% of all passengers)
t1 = average boarding time/passenger
Bus Lane Capacity 13
BUS STOP - neck of the bottle
speed
time
bus 1bus 2
buses stop (boarding)
Bus Lane Capacity 14
BUS STOP - neck of the bottle
speed
time
bus 1bus 2
buses stop (boarding)
Bus Lane Capacity 15
BUS STOP - neck of the bottle
speed
time
bus 1bus 2
buses stop (boarding)
Bus Lane Capacity 16
BUS STOP - neck of the bottle
speed
time
bus 1bus 2
buses stop (boarding)
Bus Lane Capacity 17
BUS STOP - neck of the bottle
speed
time
bus 1bus 2
buses stop (boarding)
Bus Lane Capacity 18
BUS STOP - neck of the bottle
speed
time
bus 1bus 2
buses stop (boarding)
Bus Lane Capacity 19
BUS STOP - time delay
space
time
bus 1bus 2
time delay boarding bus 2boarding bus 1
t1*pas
to
Bus Lane Capacity 20
Operational CAPACITY
Co= x * 3600
10+L/610*(L-3)
+ Ren*t1
(pas/hour)
Co = operational capacity (passengers/hour-direction)
x = projected saturation
L = bus length (in meters)
Ren = bus stop boarding ratio (% of all passengers)
t1 = average boarding time/passenger
Bus Lane Capacity 21
Boarding time
Co= x * 3600
10+L/610*(L-3)
+ Ren*t1
(pas/hour)
As boarding time decreases, capacity increases.
Example: for 2 seconds of boarding time, capacity would be 1800 passengers/hour.
Bus Lane Capacity 22
Renovation
Co= x * 3600
10+L/610*(L-3)
+ Ren*t1
(pas/hour)
Renovation fraction: there’s more passengers in the bus than the ones actually boarding. Capacity increases as renovation decreases.
Example: for 20% of passengers boarding, capacity in the whole system is five times bigger than boarding capacity.
Bus Lane Capacity 23
Delay time
Co= x * 3600
10+L/610*(L-3)
+ Ren*t1
(pas/hour)
Besides boarding time, there is a fixed delay between two buses (braking, opening and closing doors, departing, until the bus stop is free to another bus). This operation takes close to 10 seconds plus 1/6 seconds for each meter in bus length.
Bus Lane Capacity 24
Bus capacity
Co= x * 3600
10+L/610*(L-3)
+ Ren*t1
(pas/hour)
Delay time is calculated for each bus, so it must be divided by bus capacity in order to find average delay for each passenger.
Each linear meter loads up to 10 passengers. Three linear meters are spent with motor, driver, doors.
Example: an 18 m long bus has capacity for 150 passengers.
Bus Lane Capacity 25
Saturation
Co= x * 3600
10+L/610*(L-3)
+ Ren*t1
(pas/hour)
A maximum operational degree of saturation (x) should be defined to avoid excessive delays at bus stops.
Bus Lane Capacity 26
Operational CAPACITY
Co= x * 3600
10+L/610*(L-3)
+ Ren*t1
(pas/hour)
Co = operational capacity (passengers/hour-direction)
x = projected saturation
L = bus length (in meters)
Ren = bus stop boarding ratio (% of all passengers)
t1 = average boarding time/passenger
Bus Lane Capacity 27
0
500
1000
1500
2000
2500
3000
3500
0 3 6 9 12 15 18 21 24
bus length (meters)
capa
city
(pas
seng
ers/
hour
)
x=0.4
ren=0.2
t1=2
Bus stop operational capacity
Bus Length vs capacity
Bus Lane Capacity 28
Boarding time vs capacityBus stop operational capacity
0
2000
4000
6000
8000
10000
12000
14000
16000
0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2boarding time / passenger (seconds)
capa
city
(pas
seng
ers/
hour
)
ren=0.2 ren=0.5 ren=1.0
x=0.4L=18 m
Transmilenio
Bus Lane Capacity 29
Speed vs saturation
35
30
25
20
15
10
5
0
spee
d (k
m/h
)
saturation0 0.1 0.2 0.50.40.3 0.80.70.6 10.9
cars
buses
Bus Lane Capacity 30
Traveling time x saturation
70%
60%
50%
40%
30%
20%
10%
0
incr
ease
saturation0 0.1 0.2 0.50.40.3 0.80.70.6 10.9
cars
buses
Bus Lane Capacity 31
A
B
C
Convoy improves boarding time
Buses are ordered by destiny group at the beginning of corridor.
Bus Lane Capacity 32
A
B
C
Convoy improves boarding time
Buses are ordered by destiny group at the beginning of corridor.
Bus Lane Capacity 33
A
B
C
Convoy improves boarding time
Buses are ordered by destiny group at the beginning of corridor.
Bus Lane Capacity 34
A
B
C
Convoy improves boarding time
Buses are ordered by destiny group at the beginning of corridor.
Bus Lane Capacity 35
A
B
C
Convoy improves boarding time
Buses are ordered by destiny group at the beginning of corridor.
Bus Lane Capacity 36
A
B
C
Convoy improves boarding time
Buses are ordered by destiny group at the beginning of corridor.
Bus Lane Capacity 37
A
B
C
Convoy improves boarding time
Buses are ordered by destiny group at the beginning of corridor.
Bus Lane Capacity 38
A
B
C
Convoy improves boarding time
Buses are ordered by destiny group at the beginning of corridor.
Bus Lane Capacity 39
Convoy improves boarding time
Buses are ordered by destiny group at the beginning of corridor.
A
B
C
Bus Lane Capacity 40
Convoy improves boarding time
Bus stop can be extended like a train station platform.
Passengers know where group bus will stop.
AC B
Bus Lane Capacity 41
Convoy improves boarding time
Bus stop can be extended like a train station platform.
Passengers know where group bus will stop.
AC B
Bus Lane Capacity 42
Convoy improves boarding time
Bus stop can be extended like a train station platform.
Passengers know where group bus will stop.
AC B
Bus Lane Capacity 43
Convoy improves boarding time
Bus stop can be extended like a train station platform.
Passengers know where group bus will stop.
AC B
Bus Lane Capacity 44
Convoy improves boarding time
Bus stop can be extended like a train station platform.
Passengers know where group bus will stop.
AC B
Bus Lane Capacity 45
Bus convoy capacity
Co= x * 360010+ L/6
10*(L-3)+ Ren*t1
(pas/hour)8/N+2
*3
2+N
Bus Lane Capacity 46
Bus convoy capacityBus convoy capacity
26000
24000
22000
20000
18000
16000
14000
12000
10000
8000
60001 1.5 2 3.532.5 54.54 65.5
bus
lane
cap
acity
: pas
seng
ers/
hour
-dire
ctio
n
L=12 t1=.40L=18 t1=.33L=24 t1=.28
buses/convoy
Bus Lane Capacity 47
Bus convoy capacity
6000
8000
10000
12000
14000
16000
18000
20000
22000
24000
26000
0 20 40 60 80 100 120 140 160
convoy extension (m)
bus
lane
cap
acity
: pa
ssen
gers
/hou
r- d
irect
ion
L=12 t1=.40L=18 t1=.33L=24 t1=.28
Bus Lane Capacity 48
Bus sub-stops
ABC70m 70m
Independent bus sub-stops can be provided where a second bus lane is
available.
Bus Lane Capacity 49
Bus sub-stops
ABC70m 70m
Independent bus sub-stops can be provided where a second bus lane is
available.
Bus Lane Capacity 50
Operational CAPACITY (with sub-stops)
Co= x * 3600
10+L/610*(L-3)
+ Ren*t1
(pas/hour)
Nsp=sub-stops number
Nsp*
Bus Lane Capacity 51
Express lines
bus stop
express
A
B
C
D
E
Bus Lane Capacity 52
Bus sub-stops & express lines
A second lane allows express lines and multiple bays, which can be used according to
passengers demand and bus flow requirements
ABC70m 70m
Bus Lane Capacity 53
Operational CAPACITY (with sub-stops and express lines)
Co= x * 3600
10+L/610*(L-3)
+ Ren*t1
(pas/hour)
Nsp=sub-stops number
Dir=Express buses fraction
Nsp**(1-Dir)
Bus Lane Capacity 54
How to boost your bus corridor
Improvement Capacity Boarding time Sub-stops Express
lines% Lanes
t1 Nsp Dir
original 3,000 2 1 0 1
level platform 5,000 1 1 0 1
outside collecting 9,400 0.33 1 0 1
bus convoys 16,000 0.33 4 0 1
sub-stops 28,200 0.33 3 0 2
express lines 36,700 0.33 3 40% 2
express lines 43,000 0.33 3 60% 2
express lines 52,000 0.33 3 80% 2
Bus Lane Capacity 55
Bug Capacity Problem
AH, I GOT IT!TO CALCULATE THE VOLUME I
NEED TO USE THIS FORMULA: V = A x
B x C!
Bus Lane Capacity 56
Bug Capacity Problem
HEY, RED BUG! WE NEED TO FIND
OUT THE BUG CAPACITY OF
ANOTHER BOX!
NO PROBLEM. I KNOW THE VOLUME
FORMULA NOW. GIVE ME THE PROBLEM
Bus Lane Capacity 57
Bus Lane Capacity 58
Bug Capacity Problem
GREAT! THEN I’LL TAKE THE
MEASURES AND YOU CAN
CALCULATE…EEEEEK!