342 ARTICLE 56.

center of the highway upon all highways of sufficient width, except upon
streets or roads where traffic is permitted to move in one direction only,
and except when overtaking and passing another vehicle, and unless it is
impracticable to travel on such side of the highway, and in rounding curves
shall keep as far to the right of the center of the road as reasonably possi-
ble ] and any vehicle overtaking another going in the same direction shall
pass to the left of the vehicle so overtaken, provided the way ahead is
clear of approaching traffic and the operator signals the vehicle intended to
be passed by the use of his horn, or other signalling device, and that no
vehicle shall pass another from the rear at the top or near the top of a hill
or on a curve where the view ahead is in anywise obstructed or while the
vehicle ahead is crossing an intersecting highway or any steam or electric
railway crossing; any vehicle so overtaken shall promptly, upon signal,
turn as far as reasonably possible to the right in order to allow free passage
on the left.

At the intersection of public highways all vehicles shall keep to the
right of the center of such highways, and close to the right-hand side
of the road when turning to the right, and pass to the right of the center
of such intersection when turning to the left, and before making such turn
to the left, shall keep as close to the center on the right hand side of the
road as practicable.

Slow-moving vehicles, including motor trucks, shall at all times keep as
close to the right-hand side of the highway as practicable, regard being
had to the width and construction of such highway.

All vehicles about to turn from the road upon which they are traveling
into any intersecting road shall gradually reduce their speed to a point not
exceeding twelve miles an hour for a distance of not less than twenty-five
feet before beginning to make such turn, and where the view of the inter-
secting road is obstructed, preserve such reduced rates of speed until the
turn has been completed.

Except as hereinafter provided, all vehicles shall have the right of way
over other vehicles approaching at intersecting public roads from the left,
and shall give right of way to those approaching from the right. The
operator of a vehicle entering a paved public highway, which is hereby
defined to be a highway having a hard, smooth surface, composed of
gravel, shells, crushed stone, paving blocks, asphalt, concrete or other simi-
lar substance, from an unpaved public highway, or from a private road
or drive, shall come to a full stop upon reaching the intersection, and
yield the right of way to all vehicles approaching on such paved public
highway. The operator of a vehicle upon a highway shall yield the right of
way to ambulances and police and fire department vehicles when the latter
are operated upon official business and the drivers thereof sound audible
signal by bell, siren or exhaust whistle. This provision shall not operate
to relieve the operator of an ambulance or of a police or fire department
vehicle from the duty to drive with due regard for the safety of all persons
using the highway nor shall it protect the operator of any such vehicle from
the consequence of an arbitrary exercise of such right of way. Upon the