Do perspex windscreens look significantly different?

[hewlett]

..to glass ones? I know that perspex/polycarb' technology has come on in recent years. I just wondered if 'someone' was to fit an illegal perspex windscreen and commute between rally stages on the public road. If stopped, would the screen look very obviously to be non glass and therefore illegal? NB blackout border, noted
From plastics4performance's website:

FULLY THERMOFORMED ENDURO SPECIFICATION FRONT WINDSCREEN
FROM LEXAN POLYCARBONATE, HAS A HARD MAR-RESISTANT SURFACE COATING
APPLIED ON THE OUTSIDE TO HELP PREVENT SCRATCHING CAUSED BY WIPERS
AND A SPECIAL ANTI-FOG COATING ON THE INSIDE TO KEEP VISIBILITY TO
A MAXIMUM

HAS BLACKOUT BORDER APPLIED TO INSIDE SURFACE

'ENDUROFOG' SPECIFICATION SCREENS ARE SUITABLE FOR MEDIUM TO HEAVY
USE IN TOURING CARS, GT CARS, ENDURANCE RACING, RALLYCROSS

[Paul Drawmer]

Race cars use a 'rip-off' system similar to visors. Would be worth adding to a non-glass screen.

Would the scrutineers fail it\/

[gog440]

afaik not legal for use on the road or in stage rallying.
In fact you arent allowed to fit polycarb windows in anywhere on a new build rallycar, you have to use that silly stick on film.

[Viper]

i know a few people who use them on track cars, polycarb has great strength properties but marks quite easily even with a dry cloth youll end up with swirl marks, so they tend to have a short lifespan

Edited by Viper on Monday 5th April 21:32

[hewlett]

gog440 said:

afaik not legal for use on the road or in stage rallying.
In fact you arent allowed to fit polycarb windows in anywhere on a new build rallycar, you have to use that silly stick on film.

Perhaps they're just use for grass track racing and similar lower end (cost wise) motorsport then.

[marcosgt]

Presumably perspex windows (other than the windscreen) are legal on UK roadcars?

M.