These systems help warn drivers when they deviate from their intended path of travel. 1: Drowsiness alert systems
2: Lane departure warning systems
3: Electronic stability control systems
4: Adaptive cruise control systems

On your wedding day your lover gives you a gold ring of mass 3.67 g. 48 years later its mass is 3.44 g. on the average how many atoms were abrated from the ring during each second of your marriage? the atomic mass of gold is 197 u. don't enter units