Well, Forbes is already going to be cut down to just 2 lanes (one eastbound, one westbound) once it reaches Craig St., as part of the CMU plan to improve traffic flow, revitalize that strip of Forbes, increase safety, and provide dedicated bike lanes.
Forbes is an absolute mess as it is currently -- come along with me on a little trip:
3 slow, eastbound-only, narrow lanes with parking on 1 side from the Oakland "entrance" to 3 higher speed lanes around the curve under the Pitt walkway to Schenley... which turns into parking on 2 sides at Schenley Plaza, then to basically
5! one-way lanes (with the "lane" in front of the Carnegie frequent occupied by parked buses) until Bellefield where it becomes 2 very narrow left-turn lanes to Bellefield and a suggestion of 3 lanes eastbound. Cross Bellefield and it is now 2 lanes eastbound and 2 westbound lanes to turn right onto Bellefield. Continue east past Dithridge and you now have 2 westbound lanes and a parking lane and 2 lanes eastbound (1 of which is again often occupied by parked school buses). At Craig, you now have 2 lanes each direction which then quickly change to short stretches of non-metered, 1-hr parking on each side which reduce lanes of travel to 1 lane in each direction! Then just before you hit the bridge before CMU, it is back to 2 higher-speed lanes each direction with no street parking. It continues that way all past CMU until Morrison, where it becomes 1 lane each direction with parking on both sides.
Consider that this takes place in an urban area over a distance of just 1.5 miles!
Talk about about the greatest fucking transportation planning clusterfuck of all time.
To diesel21... Forbes has "immense traffic problems" as it is. The parking lanes along Forbes through the business district cause much more traffic trouble than they are worth. They provide very little parking capacity compared to the volume of traffic through the corridor and contribute significantly to delays through the stretch. This proposal for dedicated bike lane infrastructure takes plans for the BRT fully into account. In fact, they are part of the same comprehensive transit plan design that is in the works for Oakland.
To glowrock... as I said just above, the dedicated bike lanes and BRT lines are part of the same plan. Traffic flow on Forbes is currently woeful due to terrible design -- I think you can realize that by following along with the course I described above... or just driving it at any time of day, to say nothing of the experience of doing it around rush hour. I've posted a few times on this thread about the bike lane/BRT combos that have been in talks and planning for Pittsburgh. This is something that has been in the works for a little while now. The City, BikePGH, 8-80, ActiveAllegheny, and Port Authority, among other groups have been collaborating on this... looking at models which are currently in use and successful in NYC (1st & 2nd Ave bike/brt projects), Minneapolis, Colombia, China, and others.
I've posted a few events specifically dealing with this topic before... CityLive has put on a few programs about it. I'm not in Pittsburgh anymore, so I haven't been going to the meetings, but I encourage more people who are interested and who can contribute to PLEASE go -- Pittsburgh needs good urban minds at these things!