to the rear of the vehicle.

 to the front of the vehicle. 

to the left of the vehicle.

 to the right of the vehicle.

Glance ahead to the left and right.

Use the side-view mirror to check the rear.

Use both the inside and the outside mirrors and a head check.

 Use the inside mirror to check behind.

Make a mirror blind area check to the left or right rear.

Slow down a little and check the rear.

Show a hand signal and wave everyone back.

Change your lane position.

The size of the vehicle ahead

The size of a vehicle behind

The space and time needed to pass

The speed of the vehicle ahead

Make a careful check of traffic in all directions.

Activate a signal.

Shift to the proper gear.

Select the lane of traffic in which to turn.

closed sightline to the rear. 

closed travel path to the rear. 

closed sightline and travel path to the rear. 

closed sightline and travel path.

the driver on the right shall yield to the vehicle on the left.

the driver on the left shall yield to the vehicle on the right.

both vehicles must stop.

neither vehicle must stop.

point the front wheels toward the center of the road.

have the rear wheels closer to the shoulder.

turn the front wheels so they point to the side of the road. 

place the front wheels parallel to the edge of the pavement.

The rear wheels will track farther from the curb.

The rear wheels will track closer to the curb.

The rear wheel tracking depends on the turn.

The rear wheels will track in the same track.

3-point or Y-turn

2-point turnabout using a road on the right

Intersectional U-turn

2-point turnabout using a road on the left