Changed lines 6-7 from:
Assuming remodelled streets, optimised for light rail, the journey would take about 22 minutes at peak times and 25 minutes off-peak.
to:
Assuming remodelled streets, optimized for light rail, the journey would take about 22 minutes at peak times and 25 minutes off-peak.
Changed lines 16-18 from:
The average dwell time at stops is 20 s.
to:
The average dwell time at stops is 20s.
Changed line 23 from:
%center%%width=100pct%Attach:GA-light-rail-speed.png | Time to travel 800m / (c) Greater Auckland
to:
%center%%width=100pct%Attach:GA-light-rail-speed.png | Time to travel 800m at different speeds / (c) Greater Auckland
Changed lines 6-7 from:
The journey would take about 22 minutes at peak times and 25 minutes off-peak.
to:
Assuming remodelled streets optimised for light rail, the journey would take about 22 minutes at peak times and 25 minutes off-peak.
Changed lines 51-52 from:
This also yields an estimated travel time of ''19 minutes''.
to:
This also yields an estimated travel time of ''19 minutes'', at an average cruising speed of 43 kph.
Changed line 68 from:
To compute the distance travelled while accelerating and braking:
to:
To compute the distance travelled while accelerating and braking (and therefore the distance travelled at cruising speed):
Changed lines 25-26 from:
FIT assumes that Wellington will remodel streets the light rail vehicles run on, to maximize the cruising speed. This means in many cases removing lanes of traffic or parking, restricting turn movements, closing or redesigning intersections, and where possible, widening and improving the pedestrian footpaths. Stops will be located about every 800m, but in reality will be at convenient nodes or logical locations that best fit the fabric of the city.
to:
FIT assumes that Wellington will remodel all streets the light rail vehicles run on, to maximize the cruising speed. This means in many cases removing lanes of traffic or parking, restricting turn movements, closing or redesigning intersections, and where possible, widening and improving the pedestrian footpaths. Stops will be located about every 800m, but in reality will be at convenient nodes or logical locations that best fit the fabric of the city.
Changed lines 29-31 from:
This yields an estimated travel time of under 19 minutes.
to:
This yields an estimated travel time of ''under 19 minutes''.
Changed lines 51-53 from:
This also yields an estimated travel time of 19 minutes.
During detailed route design it may be feasible to remodel the streets in a way that achieves higher cruising speeds than estimated and hence a shorter travel time. On the other hand, if Wellington decides not to optimize the streets for light rail, the travel time may be longer.
to:
This also yields an estimated travel time of ''19 minutes''.
During detailed route design it may be feasible to remodel the streets in a way that achieves higher cruising speeds than estimated and hence a shorter travel time. On the other hand, if Wellington decides not to optimize the streets for light rail, the travel time may be longer. A more accurate travel time estimate depends on route design detail not available at this time.
Changed lines 60-61 from:
%center%''v'' = ''v'''_0_' + ''a t''
to:
->''v'' = ''v'''_0_' + ''a t''
Changed lines 64-67 from:
%center%''s'' = ''s'''_0_' + ''v'''_0_' ''t'' + `12 ''a t'''^2^'
%center%''a'' = ''0''
to:
->''s'' = ''s'''_0_' + ''v'''_0_' ''t'' + `12 ''a t'''^2^'
->''a'' = ''0''
Changed line 70 from:
%center%''v'''^2^' = ''v'''_0_''^2^' + 2 ''a'' (''s'' − ''s'''_0_')
to:
->''v'''^2^' = ''v'''_0_''^2^' + 2 ''a'' (''s'' − ''s'''_0_')
Changed lines 10-11 from:
to:
Changed lines 34-35 from:
As a second approximation, we estimate the expected average cruising speed for each leg of the route.
to:
As a second approximation, we estimate the distance and expected average cruising speed for each leg of the route.
Changed line 47 from:
||Sports Centre ||Miramar || 1.5|| 40.0||
to:
||Sports Centre ||Miramar || 1.6|| 40.0||
Changed lines 51-53 from:
This also yields an estimated travel time of under 19 minutes.
It may be feasible during detailed route design to remodel the streets in a way that achieves higher cruising speeds than estimated and hence a shorter travel time. On the other hand, if Wellington decides not to optimize the streets for light rail, the travel time may be longer.
to:
This also yields an estimated travel time of 19 minutes.
During detailed route design it may be feasible to remodel the streets in a way that achieves higher cruising speeds than estimated and hence a shorter travel time. On the other hand, if Wellington decides not to optimize the streets for light rail, the travel time may be longer.
Changed lines 23-26 from:
Attach:GA-light-rail-speed.png | Time to travel 800m / (c) Greater Auckland
FIT assumes that Wellington will remodel streets the light rail vehicles run on to maximize the cruising speed. This means in many cases removing lanes of traffic or parking, restricting turn movements, closing or redesigning intersections, and where possible, widening and improving the pedestrian footpaths. Stops will be located about every 800m, but in reality will be at convenient nodes or logical locations that best fit the fabric of the city.
to:
%center%%width=100pct%Attach:GA-light-rail-speed.png | Time to travel 800m / (c) Greater Auckland
FIT assumes that Wellington will remodel streets the light rail vehicles run on, to maximize the cruising speed. This means in many cases removing lanes of traffic or parking, restricting turn movements, closing or redesigning intersections, and where possible, widening and improving the pedestrian footpaths. Stops will be located about every 800m, but in reality will be at convenient nodes or logical locations that best fit the fabric of the city.
Changed lines 34-53 from:
As a second approximation, we can estimate the expected average cruising speed for each leg of the route.
to:
As a second approximation, we estimate the expected average cruising speed for each leg of the route.
||border=1 align=center width=80%
||!From ||!To ||! Distance km||! Cruise speed kph||
||WRS ||Frank Kitts Park || 0.9|| 43.5||
||Frank Kitts Park ||Te Aro Park || 0.6|| 50.0||
||Te Aro Park ||Pukeahu || 0.9|| 50.0||
||Pukeahu ||King Street || 0.6|| 40.0||
||King Street ||Hospital || 0.6|| 50.0||
||Hospital ||Newtown || 0.7|| 37.5||
||Newtown ||Zoo || 0.7|| 40.0||
||Zoo ||Kilbirnie || 0.9|| 60.0||
||Kilbirnie ||Sports Centre || 0.6|| 40.0||
||Sports Centre ||Miramar || 1.5|| 40.0||
||Miramar ||Airport || 1.5|| 40.0||
This also yields an estimated travel time of under 19 minutes.
It may be feasible during detailed route design to remodel the streets in a way that achieves higher cruising speeds than estimated and hence a shorter travel time. On the other hand, if Wellington decides not to optimize the streets for light rail, the travel time may be longer.
Added lines 1-34:
How long would a trip from the airport to the railway station take?
!! Cutting to the chase
The journey would take about 22 minutes at peak times and 25 minutes off-peak.
The estimated travel time is 19 minutes, plus on average 3 minutes' waiting at peak times or 6 minutes' waiting off-peak.
The trip is 9.5 km.
The vehicle acceleration rate is 1.0 m/s'^2^'.
The vehicle braking rate is -1.0 m/s'^2^'.
The average dwell time at stops is 20 s.
!! First approximation
The average cruising speed has a big influence on the travel time. The time to travel 800m between stops is about 65s at 60 kph, 72s at 50 kph, and 83s at 40 kph. For light rail running on-street, cities invest in remodelling the street to allow cruising speeds of 50 kph or more, where it is practical to do so.
Attach:GA-light-rail-speed.png | Time to travel 800m / (c) Greater Auckland
FIT assumes that Wellington will remodel streets the light rail vehicles run on to maximize the cruising speed. This means in many cases removing lanes of traffic or parking, restricting turn movements, closing or redesigning intersections, and where possible, widening and improving the pedestrian footpaths. Stops will be located about every 800m, but in reality will be at convenient nodes or logical locations that best fit the fabric of the city.
As a first approximation, assume Wellington will remodel the streets so that light rail can achieve an average cruising speed of 50 kph for half the line length and 40 kph for the other half. That is, the overall average cruising speed is 44 kph.
This yields an estimated travel time of under 19 minutes.
!! Second approximation
As a second approximation, we can estimate the expected average cruising speed for each leg of the route.