A75 and A77 trunk roads: EIR release

Information requested

Can you answer the following questions, under the Freedom of Information Scotland Act 2012, in relation to both the A75 and A77 trunk roads in South West Scotland:

1) During the period January 2016 to January 2021 inclusive, how many road traffic collisions were reported on the A75, A76 and A77?
2) During the period January 2016 to January 2021 inclusive, how many road casualties were reported on the A75, A76 and A77?
3) During the period January 2016 to January 2021 inclusive, how many complaints or letters of inquiry did Transport Scotland receive regarding the safety, road conditions and HGV use on both the A75, A76 and A77?
4) During the period January 2016 to January 2021 inclusive, what was the total cost from Transport Scotland, or its partner agencies, of maintenance and or improvement on the A75, A76 and A77?
5) During the period January 2016 to January 2021 inclusive, did emergency services – police, ambulance, fire – raise concerns with Transport Scotland over the condition or safety of the A75, A76 or A77?