Officers are encouraging youngsters to only trick or treat at houses they know, ideally with an adult supervising.
Emergency Services Put To The Test
Dorset's emergency services are being put to the test over two days, to see how they cope with a number major incidents.
As part of their annual Service Exercise, scenarios are being put on across the county on Thursday 7 and Friday 8 February.
Firefighters, police, the health service and council staff are taking part.
Exercise Commander, Richard Coleman said: "We run our annual Service Exercise in order to test a number of topical issues based upon known risks. Our Local Resilience Forum (LRF) partners, made up from local authorities, police and health for example, also support us and take part and see it as a valuable learning exercise in terms of partnership working.
"We aim to test such factors as major incident co-ordination centre, strategic holding areas and flood rescue co-ordination, which reflects the needs we have, and may see in the future."
If residents see large numbers of vehicles in one place or convoys, they are being told not to be alarmed.
The Queen, Duke of Edinburgh, Prince of Wales, Duchess of Cornwall visit Poundbury in Dorset.
South Central Ambulance Service hopes it'll help save lives, of people suffering cardiac arrest.
As the evenings start getting darker, officers are urging riders to use lights and wear reflective clothing.
Recently Played Tracks
Deposit £10 to get a £40 Welcome Bonus - That's £50 to play bingo, slots and more!*
Over 50 tracks to make you feel-good. New album out now...
Find your local four day weather report here.
What's happening on the roads where you are?
Make Heart the soundtrack to your day and you could be a winner with great prizes up for grabs throughout the day.
Find out more about some of the companies advertising on Heart.
Get some great ideas on how to advertise your business on radio, online and on mobile.