A community group is calling for traffic calming measures on the A275 in South Chailey to prevent serious accidents.
Slow Down South Chailey wants a 40mph limit between Cooksbridge and South Chailey on a section which is currently derestricted.
They are also calling for a dedicated path to be built for horse riders, pedestrians and cyclists.
The group is very concerned about plans to build 49 homes and 12 business units on land at the former Hamsey Brickworks.
Slow Down South Chailey founder Jayne Block said if the development is given planning permission the construction vehicles will scare horses using this rural road and could cause serious accidents.
She called for the developers to ask lorry drivers serving the site to drive considerately and added if the homes were built this would add even more traffic to this busy road.
The group has been talking to East Sussex County Council about its concerns and stressed the council was listening and being helpful.
Jayne said: “I have been very concerned about this development, as a resident, a road user and particularly as a horse rider.
“This is an extremely busy section of the road and we sometimes have to ride on it to access bridle paths.
“This speed limit on this part of the road is currently derestricted, and I believe, drivers use it as an opportunity to ‘make up time’ between the 40mph limit in South Chailey, and the 30mph in Cooksbridge.
“They often drive recklessly. We are so concerned about the generally poor behaviour of drivers on this section, particularly around horses where they regularly pass us without slowing down, they pass too close, and they ignore signals when we are indicating we wish to cross.
“Lots of us have had experiences where we have stuck our arms out to cross and had drivers continue to pass us, while waving at us. We have had to control our horses with only one hand on the reins.”
The group’s proposals also include better signage to indicate to drivers that there are horses on the road, horses crossing and guidance for appropriate behaviour.
A spokesperson for East Sussex County Council said: “As an authority we only have limited funds so we assess every suggested scheme using the same criteria to ensure we direct these resources to the areas where there is the greatest need, and where road safety schemes will have the most benefit. We will be meeting with the residents and looking at the options available.”
EA Strategic Land LLP And Cleansing Services Group submitted the planning application to Lewes District Council for land at Old Hamsey Brickworks just off the A275.It includes redeveloping the industrial estate with 12 business units and enabling a development of 49 homes.