Q: A huge problem on Interstate 680 is where concrete sections keep coming loose. Will Caltrans ever smooth this out?

Fred  Martinez, Dublin

A: Yes, this is definitely planned. Caltrans will replace concrete slabs as part of more than $1.4 billion approved last week for projects across the state, with more than half, $884 million, coming from higher gas taxes. The slab work will get $75.3 million.

The Bay Area is also getting $8.5 million to install fuel cell power in the Posey and Webster tubes to maintain safety systems in the event of a fire emergency and $4 million to install pedestrian signals, countdown timers and upgrade crosswalk markings on side streets off interstates 580, 680 and 980.

Q: The right-turn and bike lane eastbound on Fremont Avenue at Mary in Sunnyvale seems to be painted incorrectly.

Motorists are obligated to enter bike lanes when turning right to avoid cutting off bikes going straight ahead. And normally bike lanes are painted with a broken white line to facilitate that access. In this case, however, the bike lane has a broken line and a solid line. Is this correctly painted?

Vaughn Warriner

A: No. The Fremont Avenue bike lane layout was based on early guidance from the federal government, which has evolved over time. The striping will be brought up to current standards when the road is resurfaced.

Q: I almost was run over in the middle of the crosswalk on Newhall. I had to wave my arms and shout when cars zipped several inches away from me. Some drivers seemed mystified by the sight of a pedestrian. Traffic finally stopped, but it was hairy for a moment.

Bruce Toms

A: That does sound scary. Drivers must stop for pedestrians in a crosswalk.

Q: Does being in a left-turn lane cancel the need for one to signal for a left turn?

Get in line with 9 or 10 cars in the left turn lane, waiting for a signal, too, and you may be lucky to see one or two using their blinkers. Even police tend to omit their left-turn blinkers when making a turn at a signal.

Am I old-school and need to get with it and follow the lead of the current generation that has discontinued use of left-turn signals?  Or should I just carry on as an old fossil and follow age-old laws and practices?

Don Singer, Martinez

A:  Ideally drivers would signal their turns, no matter what the conditions. Some people in a turning lane may assume their turn is understood, and that may be the reason they are not signaling.

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