Bus services across America are spending a fortune on driver-side kill-switches for busses that have been hijacked by terrorists that can stop them or slow them to five miles per hour. This is to stop terrorist from ramming busses into buildings.

So now, I suppose, terrorists will have to content themselves with activating the kill-switch signals to make every bus on every freeway in America slam to a stop all at once, causing massive fatalities and snarling the nation's traffic in a weeks-long, gory jam.

Nice one, movie-plot-fighters!

Private bus companies have received millions of dollars from the Department of Homeland Security for the security systems. It costs $1,500 to equip each bus, with $50-per-bus monthly maintenance costs. Gray Line double-decker tourist buses and Coach USA have spent hundreds of thousands of dollars in federal funds to install 3,000 devices. After receiving a $124,000 federal grant, DeCamp Bus Lines is installing the device on its 80 commuter buses, which travel routes from northern New Jersey to the Port Authority Bus Terminal in Midtown. New Jersey Transit is currently in the process of equipping all of its roughly 3,000 buses with the technology. NJ Transit Chief of Police Joseph Bober said: "This enhanced technology helps us protect our bus drivers and customers. It's another proactive tool to protect our property, employees and customers."

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(via Schneier)