For most people a resting heart rate of 57 is fine. Medical guidelines put normal resting pulse (heart) rates at 60-100 BPM. 3 points off is nothing to worry about.
There are seven basic areas of operating space around the vehicle. The diagram on next slide shows the six zones, areas, or spaces surrounding the car which are visible to the driver. A zone is an area of space around a vehicle that is the width of a lane and extends as far as the driver can see. The vehicle occupies the central area, or Zone 7.
Maintaining a Space Cushion Space around your vehicle gives you distance to react in emergencies and avoid a crash. Create a space cushion around your vehicle by staying in the middle of your lane. Make sure there is enough room ahead of your vehicle and behind it for other vehicles to pass or stop safely.