Peregrine wrote: » Revised Network Redesign will be published on the 22nd.
loyatemu wrote: » there's also the problem of bunching - 3 buses show up, then a huge gap. This is very inefficient and reduces the overall capacity of the system.
machaseh wrote: » Bus bunching happens because the buses in Dublin don't have an actual schedule. I mean, yes there is a schedule when it leaves the terminus, but anything beyond that is just a free for all. In my country the Netherlands, this doesn't happen (except if there is heavy snow or other incidents of course), because buses run on a schedule throughout their entire route. If the bus arrives at a stop early, it is going to have to wait for a couple of minutes until it's back on schedule. Of course this is only done in locations where waiting doesn't hold up traffic.
Peregrine wrote: » Core Bus Corridors phase 2 consultation will be after Christmas. Maybe January. Park & ride design team setting up in two months.
cgcsb wrote: » Bunching is caused by buses being held up in road traffic Separation from road traffic where possible will reduce this
Stark wrote: » "Is there not some TARDIS technology or something you can use to make the road wider while keeping the trees, the gardens and the two way roads?"
CatInABox wrote: » What's worse is the one guy on twitter who basically rubbishes every transport project we can think of, and constantly pushes Hyperloops and Self driving cars. "Dublin doesn't need any of this stuff, we need a 21st century solution". He's swallowed all of the kool aid that Elon Musk could provide.
Sam Russell wrote: » Bunching is caused by taffic slowing the first bus, so it starts running late. This causes it to pick up extra passengers, so it takes longer to pick up and drop passengers, and having to stop at every stop. This causes more delays. The following bus the has fewer passengers because many got on the bus in front, so the later bus catches up. This is additive, so buses bunch.
Last Stop wrote: » Does that not increase or at least remain the same under Busconnects? Yes the CBCs will help close to the city but unless you have bus lanes all the way along the routes, then the same problem exists? If a spine is made up of 3 routes, and each route runs at 10 minute frequencies they combine to give a 3 minute frequency along the spine. If one bus route is delayed near the start you still have all the problems you mentioned above regarding passengers boarding the first bus (as it’s at 10 minute frequencies) and if that bus is delayed by 3 minutes, two buses will arrive at the spine together? Yes on some spines there is bus lanes the full length of all routes but you still cannot accurately predict which stop passengers will board at and how many. This means you can’t accurately predict journey times which means that you can’t combine bus routes into a spine because there is too many variables?
LeinsterDub wrote: » You're completely under valuing the effect on the bus lanes and bus priority. With simpler routes its easier to fix or prevent bunching as you can tell the bus behind to ease off. While you can do that now it's much more difficult as you've dozen of routes on the one road
Last Stop wrote: » So 1 bus route being delayed delays all routes on the spine?
donvito99 wrote: » Continuous bus lanes will improve the bus service in all respects. Unlike the Luas, buses can overtake one another and will prove much more reliable in the City Centre with dedicated lanes.
Last Stop wrote: » I understand that and have said that, it doesn’t solve the issues further out. You are seriously suggesting that buses are more reliable than Luas because they can overtake each other?? You’ve completely ignored all the issues I’ve pointed out
donvito99 wrote: » No. But 1 delay to a Luas shuts the entirety of the system down.
Last Stop wrote: » The risk of a Luas getting delayed is significantly less
donvito99 wrote: » Have you used the bus service and Luas service in Dublin? I have never had to walk away from a Bus stop, I get on one of a number of buses (I'm on a spine) and it brings me home reliably to withing +/- 10mins. When I have tried to get a Luas: 1. I cannot get on one in the mornings 2. I have had to walk to the Bus a half dozen times in the last year as the service has been suspended for technical, operational, protest, traffic issues. The bus is flexible, frequent and door to door for the vast majority of people in the city.
cgcsb wrote: » The vast majority of delays occur on sections of road that will form part of the 16 proposed corridors. Most of the rest of delays occur on orbital roads, not including them now was a mistake in my view, the O bus will be very unreliable with the present infrastructure.
Last Stop wrote: » You’ve now completely moved the goalposts. The question I asked was does Busconnects reduce bunching and the answer is no! Aren’t you lucky to live on a spine though? If you live further out then you don’t have the luxury of multiple routes
You’ve then compounded your argument by saying that Luas is worse than Bus because 1. it’s over subscribed 2. 6 breakdowns in 360 days (1% of the time)
donvito99 wrote: » It absolutely reduces bunching despite the increase in frequency and you've yet yo demonstrate otherwise. The proof is in the pudding on existing corridors like the N11 where, despite masses of buses, it works. If the Luas didn't cost €60m quid per km, it wouldn't be an issue.
Last Stop wrote: » AGAIN such high frequencies mean that any delays even outside the CBCs will lead to bunching. The N11 buses are prone to bunching!!
an you provide a source for €60m per km? Are you now saying we should use buses not because it’s the best system but because it’s cheaper than Luas?
donvito99 wrote: » You are making this out to be some sort of critical issue. It isn't. The timetables on that route are uniformly maintained. LCC cost as near as makes no difference that per km, and that is with half of construction taking place on an old railway alignment. I am obviously not saying that. Why are you proposing Luas, because it is cheaper than Metro? Luas is inferior to Metro
Last Stop wrote: » If buses get delayed outside the sprines, it decreases the reliability of the spines. How can the timetable be uniformly maintained if there’s delays? That’s a contradiction.
Sam Russell wrote: » Well if individual buses get delayed, it does not really matter because what is important is nor whether the 08:21 bus arrives at 8:21 or is 5 minutes late. What matters to most passengers is that when they arrive at the stop, the next bus arrives within the projected interval of 10 min, say. Now if the spine root has multiple routes, all with intervals of better than ten minutes, the next bus will be along quickly enough. [I'm thinking of the 46A, 145, and possibly the 39A]. Plus, when buses do bunch, the following bus can leapfrog the one in front and travel quicker as a result, so imporoving the travel time. The actual schedule does not matter, it is the waiting time and the speed of travel, and how crowded the bus gets.
