This document outlines safety signs used in construction sites. It discusses the colors used - red, yellow, blue, and green - and their meanings of prohibition, hazard, mandatory, and safe conditions. Examples of different types of signs are provided, including prohibition signs indicating no access or smoking, hazard signs warning of falling debris or live wires, mandatory signs requiring hard hat areas or seat belts, and information signs locating first aid kits or exits. Safety signs may use multiple colors to indicate hazards that require mandatory actions. Overall guidelines for construction site safety are also outlined.

1. HEALTH AND SAFETY PRESENTATION.
Prepared by:
Emmanuel Atukwei Quaye
Date: 26 September 2014
Know Your
Construction
Safety Signs.
1
First aid
box

2. The Colours Used In Safety Signs:
• Red
• Yellow
• Blue
• Green

3. The Meaning Of Colours
Used In Safety Signs:

4. Red Colour.
• Prohibition
– A red circular band
with diagonal cross
bar on a white
background, the
symbol within the
circle to be black
denoting a safety sign
that indicates that a
certain behaviour is
prohibited.
NO
SMOKING

5. Yellow Colour.
• Hazard
– A yellow triangle with
black border and
symbol within the
yellow area denoting a
safety sign that gives
warning of a hazard.
Danger
High voltage

6. Blue Colour.
• Mandatory
– A blue circle with
white symbol denoting
a sign that indicates
that a specific course
of action must be
taken.
This is a hard
hat area

7. Green Colour.
• A green oblong or
square with symbol
or text in white
denoting a safety sign
providing information
about safe conditions.
First aid
box

8. Safety Sign Post With Multiple
Colours:
• A safety sign may show
more than one colour
on it sign post. That is,
it may indicate a
hazard and a mandatory
inscription which must
be obeyed or a hazard
with a prohibition
inscription or a safe
condition act to be
obeyed.
Danger
High voltage
Keep away
!

9. Examples Of Prohibition Signs
Used In The Construction Site.

12. No
thoroughfare
No Access for
pedestrians

13. No entry
CONSTRUCTION
TRAFFIC
CONSTRUCTION
TRAFFIC
CONSTRUCTION
TRAFFIC

14. No access
to
construction
traffic
Caution
Site
entrance
Caution
Heavy plant
crossing
Site
access

15. Caution
heavy plant
turning
Reverse
prohibited
unless under
direction
No unauthorised
persons allowed
beyond this point
No unauthorised
persons allowed to
use mobile phone
beyond this point

16. Children must not
play on this site
No entry to
working area
before reporting
to site office

21. Examples Of Hazard Signs Used
In The Construction Site.
Construction
site keep out
Danger
Risk
of falling

22. Danger
Bare live wires
Caution.
Falling debris
Danger

23. Danger
Live wires
Danger
Buried cable
Construction Traffic
Beware of
children playing

24. Danger
Of
death
Mind
the
step

25. Mind
your head
Any person found
abusing these
facilities will be
liable for instant
dismissal

31. Danger
Noise hazard
area

36. Warning
It is dangerous and illegal to
operate this machine without
the proper guards in position

37. Caution
Arc welding
Danger
Men working
on plant
Danger
Test area
Warning
Isolate this machine before
removing guards

38. Caution
Misuse of compressed air is
HIGHLY DANGEROUS
and may cause permanent
INJURY or DEATH
Caution
Out of order

39. Examples Of Safe Conditions
And First Aid Signs Used in The
Construction Site.

42. First aid for this
department is available
from
First aid First aid
room
First aid
First aid
Your first aiders are:

45. First aid kits
carried on this
vehicle
EXIT
Emergency
Telephone

46. √
Site safety
Starts here
√
A tidy area is
a safer area

47. Examples Of Mandatory Signs
Used In The Construction
Site.

54. Health and Safety at
Work Act 1974
Persons entering these premises
must comply with all safety
regulations under the above act
!

55. Seat belt must
be worn

56. Examples Of Safety Sign Post
With Multiple Colours
Warning
risk of high noise levels
Ear protection must
be worn

57. SITE SAFETY
Under the Health & Safety at Work Act 1974 all persons entering this site must
comply with all regulations under this act.
All visitors must report to the site office and obtain permission to proceed on to the
site or any work area.
Safety signs and procedures must be observed and personal protection and safety
equipment must be used at all times
Construction work in progress.
Parents are advised to warn children of
the dangers of entering this site
Safety helmets must be worn
Unauthorised entry to this site is
strictly forbidden.

58. SITE SAFETY
Heavy plant and machinery
operate on this site.
Speed and parking restrictions
must be observed.
Vehicles must not enter the
site without the authority of
the site supervisor.
Unsupervised reversing in
and out of site is strictly
forbidden.
!

64. THE END