I recommend voting Yes on measures T, X and RR.
Measure T is an extension of an existing tax, and with audits of the West County Unified School District board being carried out, I believe that it will be spent appropriately. Blocking it would cause a shortfall in existing funding, most likely resulting in job cuts.
Measure X has a pretty detailed description of what exactly it would do and how it would be monitored, which is a major point in its favor. Unfortunately, most of it appears to be confined to the printed booklets sent out by the county clerk’s office, which makes it harder for people without the booklet to reference. All of the goals seem worthwhile- there are major potholes in roads throughout the region (in particular, on I-80), BART could use upgrades for greater reliability, highway improvements/repaving are needed, better bike/pedestrian road sharing design is a good idea (and takes up about 4% of the funding total). Furthermore, they’ve proven that they can do the goals that they set out to do with Measure J- it called for another bore for the caldecott tunnel, ebart and widening highway 4 and that all happened. Measure X, however, is more balanced- it includes improvements for West County and the I-80 corridor in particular.
Measure RR would provide funding for improving BART’s core reliability- replacing and upgrading core system elements like trains, tracks and tunnels. I think this is worthwhile, so I am voting for RR.