While Gary Richards correctly notes that the VTA light rail system is less productive compared to cities such as Portland and Sacramento, it is not certain that whether these improvements would yield significant reduction in travel time.
Some online Mercury readers blamed VTA for not putting the light rail underground, similar to Muni in San Francisco. However, that's not the problem here. Although light rail could operate faster underground, the current light rail alignment serve Downtown San Jose relatively well. If you look at cities like Portland, Sacramento, and San Diego, you will find that light rail in those cities also operate at grade. Part of the reason light rail was chosen is that it blends well with the pedestrian environment and without forcing passengers to walk up and down or use escalators. If downtown is supposed to be a major destination, convenient access by light rail at grade would be an asset.
However, Downtown San Jose does not have the employment concentration as in Downtown Portland, Sacramento, and San Diego. Unlike other cities, VTA's light rail trains run up and down 1st Street and along Tasman Drive to serve low density office parks, where workers have an abundance of free parking.
Some blamed VTA for not building the light rail system to the San Jose Airport, which is obviously unfortunate. Portland already runs its light rail to the Portland airport and Sacramento is planning a light rail extension to its airport. VTA's light rail is not that far away from the San Jose Airport (a little over 1/2 mile as the crow flies). However, instead of a light rail spur from First Street, or a new parallel alignment along Highway 87, the best the City and VTA could come up with is a "Peoplemover" that would not connect with High Speed Rail and neither intends to actually fund.
Regardless of which option VTA prefers, a question remains how these upgrades be funded. Most of those proposals are not included in the 2000 Measure A, which VTA has decided to unquestionably follow despite the fact that it was poorly conceived. The present financial situation is also putting more pressure on VTA. VTA is now conducting EIS study (the federal environmental document) for the Eastridge light rail extension, which for many years, VTA has planned to fund the project entirely with state and local funds. The lack of federal clearance for that project made it ineligible for the Stimulus funds, which otherwise would be very competitive considering the project was nearly shovel-ready.
At the end, VTA's poor light rail performance is a result of poor urban planning, development greed, and the continual neglect of transit riders' needs. Unfortunately, these attitude still exists at the agency and most voters and environmentalists are not aware of that. If the light rail couldn't turn around Downtown San Jose and make the system more viable, building another rail system (like BART) in Downtown San Jose most likely won't help turn it around either (look at Downtown Oakland).
Of course, VTA does not have money for a subway in downtown. However, a BART line that it could fund (to Berryessa) won't bring commuters directly to where the jobs are. Rather, VTA expects commuters to transfer to light rail in Milpitas. Don't be surprise if the BART project turns out to be a massive failure too.
At the end, VTA's poor light rail performance is a result of poor urban planning, development greed, and the continual neglect of transit riders' needs. Unfortunately, these attitude still exists at the agency and most voters and environmentalists are not aware of that. If the light rail couldn't turn around Downtown San Jose and make the system more viable, building another rail system (like BART) in Downtown San Jose most likely won't help turn it around either (look at Downtown Oakland).
Of course, VTA does not have money for a subway in downtown. However, a BART line that it could fund (to Berryessa) won't bring commuters directly to where the jobs are. Rather, VTA expects commuters to transfer to light rail in Milpitas. Don't be surprise if the BART project turns out to be a massive failure too.