Workplace transport safety An employers' guide - ARRI Lighting Rental

Health and Safety
Executive
398 You should provide signposting so that drivers do not go the wrong way. This
should help prevent vehicles from moving around areas where pedestrians or other
drivers might not expect them.
399 You should place signs so that people have time to see and understand them,
and take any action to reduce risks before they reach the hazard.
400 All signs should:
n be clear and easy to understand;
n stand out enough to be noticed; and
n be kept clean and well maintained so that they are visible at all times.
401 If signs have to be visible in darkness, they will need to be reflective and,
ideally, illuminated. Sign lighting needs be kept clean and working.
402 You can find detailed information about reflective and lit road signs in
BS 873-1: 1983 Road traffic signs and internally illuminated bollards. 14
Road markings
403 White road markings are used to regulate traffic, and yellow markings are used
to regulate parking. Double yellow lines in particular should be applied along the
edges of routes where parking is not allowed, although you should not rely on these
to prevent parking in these areas without enforcement.
404 Road markings are usually applied as either a cement-based paint or as
‘thermoplastic’ markings. Thermoplastic markings have advantages over paint, but
are slightly more expensive. Tyres can soon scrub away cement paint markings,
whereas thermoplastic markings have a longer life because they grip the surface
better. They also remain slightly raised for longer, making them easier to see and
providing better grip for vehicles.
405 Markings are made reflective by adding tiny glass beads. These can be mixed
into the marking material or dusted on the surface after it has been laid (or both).
406 Thermoplastic markings are normally both premixed and dusted with
beads, but painted lines are normally only dusted after they have been laid. As
thermoplastic is rubbed away by vehicle tyres, more beads are exposed, but
when painted lines wear away the beads are worn away, leaving the markings
unreflective.
Surface
dressing
Surface
dressing
CEMENT
Newly Newly laid laid
Worn away away
Glass Glass beads
dusted dusted on on
Paint Paint
marking Rubber Rubber tyre
residue tyre residue
Surface
dressing
Road surface
Newly laid
Glass beads dusted
on on and and mixed in in
Road surface
Reflective
Much less reflective
Road surface
THERMOPLASTIC
Worn away
Rubber Rubber tyre
residue tyre residue
Road surface
Reflective Reflective Less reflective
Surface
dressing
Figure 25 Road markings: when cement paint markings rub away, they become unreflective
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