Slow Traffic down on Mansfield Road, Hasland, Chesterfield

With Hasland having a number of parks and schools I think it's important for all traffic to be at a reasonable speed. Despite the road being signposted as a 30mph (from 40mph so not that much of a difference) there is no way cars are keeping to this.
I have had cars driving ridiculously close to me and on two occasions I have nearly been run over when walking on the pavement (which is extremely narrow). Most recently today, my dog got spooked and started to run out onto the road, not far as she had a lead on, I stepped out to stop her and we were missed by an inch! What if this had been a child who had fallen or a wobbled on a bike?
The pavement is neither use nor ornament being so narrow, yes there is one on the other side but crossing over is dangerous too!
Please sign this petition to slow traffic down and keep Hasland safe.