Signs, Signals, and Lane Markings

Signs, Signals, and Lane Markings

Three types of traffic control devices.

Signs

Signals

Lane Markings

Signs

Signs

Signs identified in two ways:

Color

Shape

Signs (cont.)

Signs come in ____ colors.eight

Sign COLORS

Red

Green

Orange

Yellow

-stop, yield, or prohibitory (regulatory)- guide or direction

- warning

- construction

Sign COLORS (cont.)

Blue

Brown

Black

White

- motorist services

- parks and recreation

- regulatory

- regulatory

Sign SHAPES

Stop sign Warning

Yield Regulatory

School zoneGuide

Sign SHAPES (cont.)

Railroad Ahead

At Railroad Crossing

Do not enter

No passing

Route Signs

PA State route

U.S. Highway

U.S. Interstate / Turnpike

Route Signs (cont.)

Even numbers = East / West routes

Odd numbers = North / South routes

Bypass vs. Spur

Three digit Interstate numbers indicate Bypass or Spur.

Bypass vs. Spur (cont.)

Bypass

I-495 – The 4 (even) indicates connectsto interstate twice.

I-495 – The 95 indicates which interstate.

I-95 I-495

Bypass vs. Spur (cont.1)

Spur

I-395 – The 3 (odd) indicates connectsto interstate once.

I-395 – The 95 indicates which interstate.

I-95 I-395 U.S. 55

Guide Signs

Guide signs give a variety of information:

DistanceExits

Directions

Guide Signs (cont.)

Guide signs give a variety of information:

Street names Left exit / Must exit

Signals

Signal Boxes

Multiple-

Single-

Can change color

Can’t change color

Cluster Light—gives multiple directions

Signals

Signals identified in three ways:

Color

Shape

Solid / Flashing

Signal COLORS

Red-

Green-

Yellow-

Stop

Prepare to stop(action)

Proceed with caution(thinking)

Signal SHAPES

Circle-Applies to ALL directions

Arrow-Applies ONLY to direction of

arrow

FLASHING SIGNALS have different meanings

Red-

Green-

Yellow-

Stop, proceed with caution

Proceed with caution

Proceed with caution

FLASHING Signals have different meanings (cont)

Yellow flashing arrows havedual meanings.

Multiple Box – Yield right of way

Single Box – Proceed with caution

Right Turn On Red

Right Turn On Red

You may make a right turn on red aftera full and complete stop, there are no signs or signals prohibiting, and the maneuver may be done in safety.

Right Turn On Red (cont.)

What prohibits a Right Turn On Red?

Red arrow (signal)

No turn on red sign (sign)

Right Turn on Red vs.Yield

Is there a channel (island) or not?

Yes = Yield

No = Right Turn on Red

Right Turn on Red vs.Yield (cont. 2)

What is a channel (island)?

Triangle that separate right turn fromtraffic signal.

White PaintConcrete

White Paint / Concrete

Right Turn on Red vs.Yield (cont. 3)

Which is a Right Turn on Red?

1 2

Making Left Turns

Two types of left turns:

Protected

Unprotected

Making Unprotected Left Turns

Unprotected

Must yield to oncoming traffic

When is it an unprotected left turn?

No signal

Green circle

Making Protected Left Turns

Protected

You have Right of Way (cautiously)

When is it a protected left turn?

Green arrow

Making Left Turns On Red

Making a left turn on red

You may make a left turn on red from a one-way street to a one-way street, underthe same conditions as right on red, and from the furthest left hand lane.

NO TWO WAY STREETS!!!!

Lane Markings

Lane Markings

Lane markingsidentified in two ways:

Color

Shape

Lane Marking COLORS

Yellow -two way traffic

(left side of car)

White -one way traffic

Lane Marking SHAPES

Solid

Dashed

Dotted

Lane Marking SHAPES (cont.)

Solid

Yellow- Do not cross

White-Single - Recommended do not cross

Double - Do not cross

Lane Marking SHAPES (cont. 1)

Dashed Can crossYellow- May pass if on your side of center

line.

White – Creates lanes.

Lane Marking SHAPES (cont. 2)

Dotted

Can cross

Found in:-Merge areas-Intersections as guide lines

for turning traffic