There has been a sharp rise in the number of pedestrians and cyclists being injured or killed in Sussex say police.
Numbers for 2008 are already up on last year's figures.
The most significant increase is in the number of young cyclists involved in collisions.
The number of children killed or seriously injured rose from 2 between January and June in 2007 t
o 10 between January and June this year.
The number of pedestrians killed or seriously injured on the roads has also risen, from 91 this time last year to 104 so far in 2008.
Police are urging parents to set a good example by choosing safe places to cross the road and using a crossing where there is one available - even if it means walking a bit further.
Parents should also make sure children understand the dangers of the road before they allow them out unsupervised, either on foot or on a bicycle.
Teenagers are also at risk on the roads and the distraction of an MP3 player or a mobile phone can mean they do not hear an approaching vehicle, or step off the road without looking due to their concentration being elsewhere.
Inspector Marc Clothier, Sussex Road Policing Unit, said: "Our aim is to reduce the number of casualties on the roads of Sussex and we are always looking at new ways to prevent these collisions occurring or to minimise the injury caused.
"During August we will be launching an initiative called Helmet Watch, which is part of a national scheme which rewards young cyclists for wearing a helmet.
"We would, however, encourage all cyclists of any age to wear a helmet when riding their bike."
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