I asked this question a few years ago on Skyscrapercity.com and got ripped to shreds for some reason.
Driving a long Queen, and any streetcar line for that matter without a R.O.W., why is a bus not a better option?
Firstly, a street car takes up two lanes when it picks up/drops off passengers, a bus would only need to use one. This seriously slows down traffic.
Secondly, Buses can weave in and out of traffic. If something is obstructing a streetcar line, then the car can't move.
Is it simply to add character, or to save on fuel? I've never understood why streetcars clog up our streets, when a bus could do the same job, with a lot more pluses.
First off, a bus carries less riders than a streetcar.
Streetcar requires less drivers and that a large labour cost saving.
Streetcars are Green depending how you want to handle power source.
Streetcars have a smother ride.
Streetcars don't fail as much as the Orion VII do on route.
Steel wheels are prefer by most riders over rubber wheels.
Streetcars are cheaper to operate than buses.
Streetcars have a higher cost recover per rider.
Steel wheels add more land value as well increase development faster.
Streetcars will last 2-4 times longer than a bus depending how often buses are replace. TTC has been over 20 years, but other systems are moving to 12 years cycle. Some systems in the US have subway and PCC over 60 years in service today.
Streetcars can use 1 lane if on street parking remove and tracks move to the curb lane. Moving to the curb lane will have an impact how they turn onto other streets for turning.
As for labour lets look a 5,000 riders/hr.
A 40' bus using peak load of 50, you need 100 buses putting the headway 40 seconds. Will not take much to start a major bunching.
A CLRV carries 125 requiring 40 streetcars with a headway 1.5 minutes. That is 60 less drivers. When the new LRT's arrive, you will carry another 30 riders requiring 32 cars and 8 less drivers. Now, if you want to double the headway, you add a 2nd car that does not need another driver using the POP system.
Now, a driver is only doing 6hrs a day over 5 days, you need more drivers to cover the extra hrs of operation. Ratio is about 3.5/vehicle. 100 buses = 350 driver, 40 streetcars = 120 drivers for a saving of 230 drivers.
Up front cost will see buses beat streetcars hands down, but it is the back end cost where buses loose out and that this the most important area of operation.
Now you need support personnel to maintain those vehicles and more vehicles you have, more you going to need. At the same time, more supervisors will be needed to look after those vehicles on the road.
Centre of the road was chose as that is where wagons travel when horse were tied up in front of stores just like today cars. A number of systems move to curb lanes or on one side of the street as systems got built over time. Still happening today and We will see that one side operation in the coming year in a number of place in Toronto.
Riders cause a lot of traffic issue by not having their fare ready to board, refused to move to the rear. This also happens on buses also. All streetcars are high floor and will be until 2015 where most buses are low floor now allowing faster loading and off loading.
I have seen buses been block by traffic based on how they park.
I did a report back in 2004 on the 403 BRT using the figure of 25,000 riders provided by the EA and over 20 years going with an LRT from day One vs. BRT using 40', 60', double deck buses, LRT cost saving was about $250m not allowing for high fuel cost.
I did the same thing for the Queens Quay extension back in 2006 and LRT won hands down. To carries the ridership for a subway as some call for, you would only see 1 train every 20 minutes.
Buses, BRT, LRT, Subway and heavy rail all have their place. What you use depends on the ridership under true transit planning, not the whim of politicians.
Transit has been and still the whipping boy by the traffic planners and car folks as it easy to go after than those pesky cars.
Hope this help.