Updated October 22 at 10:25 am:

Brad Ross, TTC’s Director of Corporate Communications, advises that effective 9:30 am today all Queen operators will carry passengers around the Shaw/Dufferin and Parliament/Broadview loops, and tell passengers of the layover that may occur.

Also, for those who like to know the internal trivia, the east and west ends of the route are known as “500” and “507” respectively so that they can be scheduled and managed independently.

Original post:

Today, the TTC begins a five-week test of operating the Queen car in two overlapping sections, weekdays only.

• East end cars will operate between Neville and Shaw, looping via Shaw, King and Dufferin.
• West end cars will operate between Long Branch or Humber (alternate cars) and Parliament, looping via Parliament, Dundas and Broadview.

Without rehashing many previous posts on this topic, here is a preliminary look at the issues:

• The design of the overlapped routes may not be ideal, and I hope that it will work well enough that TTC staff don’t reject any alternative arrangements.  Part of the problem is a tradeoff between the number of cars and operators available and the amount of additional service on the route.  A long term arrangement may require a different route configuration and/or even more service.
• Scheduled service to the outer ends of the line has been cut to provide for the overlap.  The premise is that with more reliable headways and fewer short turns, the actual service provided to Neville and Long Branch will be better than on the unified route.  However, the AM peak is not, for the most part, affected by congestion and short turns were comparatively rare.  Will the reduced service be able to handle demand outside of the overlapped section downtown?
• Overlapped TTC services have a long history of badly managed integration.  This can be seen with the  behaviour of 502 Downtowner cars that often pull out from McCaul or Kingston Road right behind a 501 Queen and carry as few passengers as possible.  How many times will we see pairs of east and west end cars travel across the central part of Queen together?
• Both turnbacks involve on-street loops.  Cars waiting for their scheduled departure times may be pushed out by other services, or may simply create congestion of their own while laying over in the middle of the street.
• On the brighter side, both scheduled turnbacks are  far enough away from Yonge Street that even a short turn (say westbound at Bathurst or eastbound at Church) will maintain service in the heart of downtown.

With shorter routes, the need for recovery time should be reduced as operators won’t face a 90-minute more trip between termini.  For the east end service, recovery times are no more than 4 minutes (peak periods). 

In the west end, recovery times are longer, but these are mainly intended to make the schedule merge at Humber work properly — the difference between Humber and Long Branch trip times must always be a multiple of the headway.  For example, in the early evening, the Long Branch cars get 13 minutes “recovery” so that their round trips differ by one hour (four times the 15-minute headway) from the Humber cars.  Later in the evening, the difference in round trips is only 38 minutes (two times the 19-minute headway), and the Long Branch runs get only 4 minutes recovery.

This thread is intended as a repository for observations and comments about the split route operation, and I am particularly interested in hearing from regular users of the Queen car on their day-to-day experiences.

I have asked the TTC for their vehicle monitoring data for the months of October and November for the 501 and will publish an analyses of route behaviour comparing the unified and split operations.

Starting on October 19, 2009, the TTC will experiment with splitting the 501 Queen route into two segments on weekdays only.  The intention is to decouple the outer ends of the line from events that occur on the opposite side of the city, and to provide sufficient flexibility that short turns should not interfere with riders’ ability to use the service.

This will be a trial operation lasting only for the October schedule period (roughly six weeks).  Seven cars will be added to the route during peak periods, with between five and eight additional at other times.  Weekend service is not affected, nor is the operation of the 502/503 routes on Kingston Road.

Two separate services will operate:

• Neville Loop to Dufferin, looping in the west via Shaw, King and Dufferin.
• Long Branch Loop and Humber Loop to Broadview, looping in the east via Parliament, Dundas and Broadview.

The eastern route will operate from Russell Division, and the western one from Roncesvalles.  This will eliminate crewing complexities with cars and operators switching between divisions.

Overnight service on the 301 Queen car will be split in the same manner, but cars will be scheduled to connect.  This arrangement will result in scheduled pairs of cars on the common section, a rather odd configuration.

The Neville-Dufferin branch will operate with the following headways:

• AM Peak: 7’15”
• Midday: 7’30”
• PM Peak:  7’15”
• Early Evening: 8’00”
• Late Evening:  9’30”

The Humber-Broadview branch will operate with the following headways (service to Long Branch in parentheses):

• AM Peak: 5’30” (11′)
• Midday:  6’15” (12’30”)
• PM Peak:  6’30” (13′)
• Early Evening: 7’30” (15′)
• Late Evening: 9’30” (19′)

By comparison, scheduled service for September 2009 is:

• AM Peak: 5’10” (10’20”)
• Midday: 5’53” (11’45”)
• PM Peak: 5’40” (11’20”)
• Early Evening: 6’45” (13’30”)
• Late Evening: 10′ (20′)

If the new service is closer to schedule than the old one, then service should be improved even though scheduled headways on the outer ends of the route are slightly wider.  

Headways on the two halves of the route are, except for the overnight operation, different and there is no attempt to produce a blended operation in the central part of the route.  It will be interesting to see how many cars run in pairs by coming out of Dufferin or Broadview immediately behind a through car.  This is a challenge for TTC line management, and could defeat the benefit of the overlapped service between Broadview and Dufferin.

The considerable overlap of the two routes provides continuity even if either of them needs to be short turned.  Westbound cars from Neville could short turn at Bathurst or at McCaul while still serving downtown and connecting with the through service to the west end.  Eastbound cars from Humber could short turn at Church.  A shorter overlap would have almost guaranteed that many cars would never serve the major downtown stops or connect with their counterparts for through service.

Although all cars will pass through the congested section between University and Bathurst, short turns will be possible without eliminating connections, and the need for short turns at the outer ends of the line should be reduced.  This will bear watching.