The National Transportation Safety Board has said more than 150 train crashes since 1969 could have been prevented by Positive Train Control. The agency had recommended the automatic braking ...

One of the more practical recommendations the board made was for railroads to develop a way to automatically turn the automatic braking system back on after it is manually disabled to allow for ...

An Arduino Nano is in charge of reading the sensors. When it appears the car is approaching a wall or similar obstacle, it fires off a PWM signal to the car’s motor controller commanding it to ...