Q There are plans to extend BART from Fremont into San Jose. I read somewhere about Caltrain running from Newark to Menlo Park. Neither provides any improvement to conditions on Highway 237. Is there any plan to run a BART or Caltrain line parallel to 237 from the Warm Springs/Milpitas area to Mountain View or Palo Alto? This would reduce the load on 237 by a large extent.

Pranav Wankawala

A No such plans exist.

Q Any plans to convert Calaveras Boulevard or east Highway 237 into a freeway? Sure would be nice to avoid all those traffic lights.

John Lynn

A Nope. The only hope is ...

Q Will Highway 237 ever be widened to four lanes each way? We badly need more lanes.

David Himmell

A No, but there are plans to extend the carpool/express lane west toward Highway 85.

Q About 10 years ago they realigned the entry to Highway 237 east at Lawrence Expressway north. Before that the carpool lane was on the left, and Lawrence traffic arranged itself in two lanes to exit: at right the non-carpoolers, and next over the carpoolers. It worked well. Now the carpool lane is on the right, and all cars have to squeeze right to exit, slowing down traffic considerably. Why did they do that?

A Blame Roadshow. Caltrans made the change in 2009 because of safety concerns and many complaints from motorists to me about people cutting through the chevrons on the left side of the ramp and the carpool lane at the last moment, then trying to merge to the right to get to the regular lane. That maneuver was blocking the carpool lane as vehicles would have to stop to find a gap in the right lane, and it was causing unpleasant and at times angry reactions from motorists.

Q Will the carpool lane on the eastbound Highway 237 ramp at Great America Parkway ever be expanded to start at the intersection instead of one-third of the way up the ramp? There appears to be plenty of room for the expansion, and this onramp is a terrible bottleneck during afternoon commute hours.

Nathan Fernsten, Kumaran Narayanan and more

A Caltrans will consider this, but nothing immediate is in the works.

Q I have a question about the northbound Zanker Road onramp to 237 east, which often gets backed up during afternoon traffic hours. There is a dedicated right-turn lane from Zanker that leads to the onramp and is separated from the lanes going straight by a small island median. What makes this intersection extra ambiguous is that there is a white sign at the traffic light that says "except for vehicles with 2 or more passengers" or something along those lines. There is nothing which precedes the "except" so I don't know what is actually excepted.

Ben Hsia

Fremont

A A "No Right Turn" sign is missing and the carpool sign is not in the correct position. Caltrans will install new signs.

Look for Gary Richards at Facebook.com/mr.roadshow, follow him at Twitter.com/mrroadshow or contact him at mrroadshow@mercurynews.com or 408-920-5335.