The Scottish Government

60

Recommended for most high quality A and B roads with few bends, junctions or accesses.

When using the Assessment Framework the accident rate should be below threshold of 35 injury accidents per 100 million vehicles kilometres with this speed limit.

Recommended only for the best quality C and Unclassified roads with a mixed (i.e. partial traffic flow) function with few bends, junctions or accesses.

In the longer term these roads should be assessed against Upper Tier criteria.

50

Should be considered for lower quality A and B roads which may have a relatively high number of bends, junctions or accesses.

When using the Assessment Framework the accident rates should be above a threshold of 35 injury accidents per 100 million vehicles kilometres at higher speeds.

Can also be considered where mean speeds are below 50 mph so lower limit does not interfere with traffic flow.

Should be considered for lower quality C and unclassified roads with a mixed function where there is a relatively high number of bends, junctions or accesses.

When using the Assessment Framework the accident rate should be below a threshold of 60 injury accidents per 100 million vehicles kilometres.

40

Should be considered where there is a high number of bends, junctions or accesses, substantial development, where there is a strong environmental or landscape reason, or where there are considerable numbers of vulnerable road users

Should be considered for local roads with a predominantly local, access or recreational function, or if it forms part of a recommended route for vulnerable road users.

When using the Assessment Framework the accident rate should be above a threshold of 60 injury accidents per 100 million vehicles kilometres

30

Should be the norm in villages