Q. What other kinds of things can you do to discourage single-occupancy vehicles?

What's needed is not moral suasion but legal roadblocks, tough state laws that will banish single-occupancy vehicles during rush hour.

So we hope people will get out of their cars -or at least single-occupancy vehicles -and not clog up the roads.

To the Editor: You are wrong to suggest that building ever wider highways is only encouraging more single-occupancy vehicles and greater pollution (editorial, Nov. 4).

Not expanding highway capacity has also resulted in more single-occupancy vehicles.

Even with local events, the transport emissions can be high due to the use of single-occupancy vehicles.

But the main thing is we're going to have to get single-occupancy vehicles, which we call SOV's, off the road.

To generate more transportation revenue and to discourage more single-occupancy vehicles at drive time, Mr. Frankel even suggested reinstituting tolls.

City officials said that on an average weekday, roughly two-thirds of the vehicles in Manhattan south of 96th Street are single-occupancy vehicles.

Public Law 103-172 provides for the establishment of programs to encourage Federal employees to commute by means other than single-occupancy vehicles.