The last trips on each route from downtown (Rideau Centre) are shown here. I make my recommendations as well. Some routes do not warrant late night service due to ridership or densities, and some routing changes are also mentioned that I recommend. Late night is after midnight Monday to Saturday and after 11 pm on Sunday. During those hours, Mackenzie King Bridge should be closed (earlier than it is now).
1 to Greenboro
Weekdays 11:31 pm, Saturday 1:06 am, Sunday 11:22 pm
Recommended based on schedule - Weekdays 2:31 am (+6), Saturday 2:36 am (+3), Sunday 2:22 am (+6), weekly increase of 39 trips. Priority for 24 hour service: 8
1 to Rockcliffe
Weekdays 11:54 pm, Saturday 12:19 am, Sunday 11:46 pm
Recommended based on schedule - No change. Due to the low densities and high affluence in the only section not covered by the 7 as well, late night service is not warranted east of the Rideau Centre. Any northbound 1 trips after those times should end at the Rideau Centre. It could even be argued that service could end earlier on that section.
2 to Bayshore
Weekdays 1:10 am, Saturday 1:31 am, Sunday 12:31 am
Recommended based on schedule - Weekdays 2:10 am (+2), Saturday 2:31 am (+2), Sunday 2:01 am (+3), weekly increase of 15 trips. Priority for 24 hour service: 7
4 to Hurdman
Weekdays 11:48 pm, Saturday 1:34 am, Sunday 12:16 am
Recommended based on schedule - Weekdays 2:18 am (+5), Saturday 2:34 am (+2), Sunday 2:16 am (+4), weekly increase of 31 trips. Late night trips should end at Carleton, as demand would be very low on the Carleton to Hurdman section after all classes and evening activities end. Priority order for 24 hour service: 11
5 to Billings Bridge
Weekdays 12:22 am, Saturday 11:55 pm, Sunday 11:15 pm
Recommended based on schedule - No change. Densities are fairly low in the area not served by Lees Station nearby or close to Route 14, and Route 5 is not a core route.
5 to St. Laurent
Weekdays 12:06 am, Saturday 11:56 pm, Sunday 11:01 pm
Recommended based on schedule - No change. Routes 7 and 12 are nearby, and Route 5 is not a core route.
7 to Carleton
Weekdays 12:58 am, Saturday 1:20 am, Sunday 12:07 am
Recommended based on schedule - Weekdays 2:58 am (+4), Saturday 2:50 am (+3), Sunday 2:37 am (+5), weekly increase of 28 trips. Priority for 24 hour service: 6
7 to St. Laurent
Weekdays 1:07 am, Saturday 12:46 am, Sunday 12:01 am
Recommended based on schedule - Weekdays 2:37 am (+3), Saturday 2:46 am (+4), Sunday 2:31 am (+5), weekly increase of 24 trips. Late night service should deviate onto Brittany to serve high-density area otherwise covered by Route 5. Priority for 24 hour service: 6
8 to Chaudiere
Weekdays 12:22 am, Saturday 1:02 am, Sunday 11:45 pm
Recommended based on schedule - No change. This direction is well covered by STO buses which should be extended past 2 am as well.
8 to Billings Bridge
Weekdays 12:57 am, Saturday 1:23 am, Sunday 12:23 am
Recommended based on schedule - Weekdays 2:27 am (+3), Saturday 2:23 am (+2), Sunday 2:23 am (+4), weekly increase of 21 trips. Late night service should end at Herongate area (i.e. Albion/Walkley) as the return loop to Billings Bridge is not necessary at those hours. Priority for 24 hour service: 9
9 to Hurdman
Weekdays 11:45 pm, Saturday 11:44 pm, Sunday 11:20 pm
Recommended based on schedule - No change. Densities are fairly low in the area not served by Routes 7 and 12, and Route 9 is not a core route.
12 to Blair
Weekdays 1:43 am, Saturday 1:18 am, Sunday 12:48 am
Recommended based on schedule - Weekdays 3:43 am (+4), Saturday 3:48 am (+5), Sunday 3:48 am (+6), weekly increase of 31 trips. Due to the high demand and densities, 24 hour service should be seriously considered, probably the first non-Transitway route to warrant such. Priority for 24 hour service: 4
14 to Carlington
Weekdays 12:32 am, Saturday 12:27 am, Sunday 11:31 pm
Recommended based on schedule - Weekdays 2:02 am (+3), Saturday 2:27 am (+4), Sunday 2:01 am (+5), weekly increase of 24 trips. Priority for 24 hour service: 13
14 to St. Laurent
Weekdays 12:43 am, Saturday 12:36 am, Sunday 11:42 pm
Recommended based on schedule - Weekdays 2:13 am (+3), Saturday 2:36 am (+4), Sunday 2:12 am (+5), weekly increase of 24 trips. Priority for 24 hour service: 13
(16 does not go through downtown after 10 pm Monday to Saturday and 7 pm Sunday, must go to Tunney's Pasture to pick up on Sunday evening. Due to low densities in Sandy Hill and proximity to Lees Station, such is not unreasonable.)
18 to St. Laurent
Weekdays 12:10 am, Saturday 11:21 pm, Sunday 11:26 pm
Recommended based on schedule - No change. Densities are fairly low, and Route 18 is not a core route.
85 to Bayshore
Weekdays 12:33 am, Saturday 1:14 am, Sunday 12:25 am
Recommended based on schedule - Weekdays 3:33 am (+6), Saturday 3:44 am (+5), Sunday 3:25 am (+6), weekly increase of 41 trips. Due to the high demand and densities, 24 hour service should be seriously considered, probably the second non-Transitway route to warrant such. Priority for 24 hour service: 5
86 to Elmvale
Weekdays 12:06 am, Saturday 12:50 am, Sunday 11:11 pm
Recommended based on schedule - Weekdays 2:06 am (+4), Saturday 2:20 am (+3), Sunday 2:11 am (+5), weekly increase of 28 trips. Priority for 24 hour service: 14
86 to Baseline/Colonnade
Weekdays 12:16 am (86B), Saturday 11:29 pm, Sunday 11:23 pm
Recommended based on schedule - Weekdays 2:16 am (+4), Saturday 2:29 am (+6), Sunday 2:23 am (+6), weekly increase of 32 trips. This is based only on the 86B branch as the 86C branch is a mix of lower densities and industrial uses, but late night service might be warranted for OC Transpo employees at Merivale garage - a totally different situation. Priority for 24 hour service: 14
(87 does not go through downtown in the late evening; must go to Hurdman to pick up. Due to duplication and low demand to Carlingwood, such is not unreasonable, although later service on the Hurdman-South Keys section of the 87 is probably warranted)
94 to Millennium
Weekdays 12:29 am, Saturday 12:54 am, Sunday 11:15 pm
Recommended based on schedule - Weekdays 2:29 am (+4), Saturday 2:24 am (+3), Sunday 2:15 am (+6), weekly increase of 29 trips. Priority for 24 hour service: 10
(94 to Woodroffe does not go between Fallowfield and Tunney's Pasture in the late evening; must take 95 to Fallowfield to pick up. Depending on future ridership, the gap might need to be filled.)
95 to Fallowfield
Weekdays 24 hours, Saturday 24 hours, Sunday 24 hours
Recommended based on schedule - No change. Priority for 24 hour service: 1
95 to Place d'Orleans
Weekdays 24 hours, Saturday 24 hours, Sunday 24 hours
Recommended based on schedule - No change. Priority for 24 hour service: 1
96 to Terry Fox/Stittsville
Weekdays 2:41 am, Saturday 2:36 am, Sunday 1:55 am
Recommended based on schedule - Weekdays 24 hours (+3 or +5), Saturday 24 hours (+6), Sunday 24 hours (+5), weekly increase of 28 trips. Complete 24 hour service from downtown to Kanata (late night service not warranted to Stittsville at this time). Priority for 24 hour service: 3
97 to Bayshore
Weekdays 2:51 am, Saturday 2:56 am, Sunday 2:16 am
Recommended based on schedule - No change if Route 96 would also run all night to Bayshore. Those are the last trips that run all the way to Bayshore. Priority for 24 hour service: 2 (Tunney's Pasture to Airport)
97 to Airport
Weekdays 24 hours, Saturday 24 hours, Sunday 2:18 am
Recommended based on schedule - Weekdays 24 hours, Saturday 24 hours, Sunday 24 hours (+3), weekly increase of 3 trips. Complete 24 hour service on Sunday nights. Priority for 24 hour service: 2
(98 does not go through downtown in the late evening; must take 97 to Greenboro to pick up. Depending on ridership, more 98s could be extended downtown.)
Why no Priority 12? that would be Route 118.