I'm with Mark: Excellent idea. Raised intersections would be a good idea for most of these smaller streets. Can't really see a downside in discouraging leadfooted backstreet driving.

I think the '"off-ramp" from Flatbush onto Carlton puts people into a highway mentality, which makes the intersection of Carlton and Park Pl very treacherous, and has ripple effects further down Carlton. The DOT should remove the off-ramp, make it a plaza, and make traffic from Flatbush turn right on Park Pl, then left on Carlton. That would solve both problems.

traffic use this as a short cut to avoid flatbush. Dollar Vans are bad and so are the livery drivers.