Blood stained the seats, floors and doors of several commuter rail cars after a derailment that killed four people in the Bronx, a federal agency reported Friday.
The Taxi and Limousine Commission has requested information on anti-speeding vehicle technologies following the introduction of a City Council measure to put black boxes in cabs to monitor speeding.
A plan has been introduced to track New York City cabs, in an effort to curb speeding and other dangerous driving habits.
Amtrak is going to break the speed limit this week in the Northeast Corridor.
Speed appears to have contributed to a car driving off a road in upstate New York near Lake Ontario and crashing into some trees, killing two teenagers and injuring three others.