Riverdale's bowling alley

We've talked about it several times, but the situation hasn't gotten any better.

Drivers are still overshooting the sharp turn at Exit 22 on the northbound side of the Henry Hudson Parkway, plowing down the three arrow signs erected there.

The Riverdale Press reported on this in August 2007 when the city Department of Transportation installed a new set of signs — for the upteenth time — at the exit ramp. But by early October one of those signs was down, and by December, they all were.

Apparently someone else has his eye on the situation, too.

Riverdalian Robert Davis has been keeping track of the ill-fated signs, posting their ups and downs on his Web site.

“My neighbors, my children and I were wondering how often the signs get knocked down and wondering how long it takes to put them back up. So I kept track,” he wrote in an e-mail to The Press. “As it turns out, Exit 22 is a special kind of self-enforcing ‘speed trap.’ It traps anybody who’s not expecting a blind short ramp, sharp right turn, stop sign and T-intersection, and then it does some serious damage to their car.”

The Web site includes photographs and video of the danger zone, and tracks the rise and fall of the arrow signs throughout a period of about 14 months.

In that time, Mr. Davis points out, roughly 16 accidents resulted in the loss of at least one sign — that’s about one accident every 27 days.

A spokesman for the DOT has maintained there is enough cautionary signage before the hair-pin turn. Drivers just need to take it slow, he said.

Meanwhile, Mr. Davis has his own suggestions (above at right) for which signs should be erected there.