Engineering
Engineering measures are implemented through the programme of Local Safety Schemes. These are generally low cost, high value measures which are designed to reduce the number of collisions at sites with a history of road traffic collisions where an established pattern of accidents can be effectively treated.
The schemes typically include improved signs and road markings, pedestrian facilities, junction improvements and resurfacing.
Lincolnshire has about 2600 collisions per year. Table 1 below shows the annual average distribution of injury collision by classification of road and speed limit based on the 5 year period 2000 – 2004 inclusive.
Table 1 Annual Average KSI Collisions
| A Class Roads | B Class Roads | C Class & U/C Roads | ||||
|---|---|---|---|---|---|---|
| KSI | Slight | KSI | Slight | KSI | Slight | |
| 30 mph | 30 | 242 | 21 | 166 | 53 | 537 |
| 40 mph | 19 | 104 | 8 | 43 | 5 | 30 |
| 50 mph | 8 | 31 | 3 | 13 | 1 | 5 |
| 60 mph + | 199 | 612 | 54 | 187 | 56 | 239 |
| TOTAL | 256 | 989 | 86 | 409 | 115 | 811 |
It can be seen that the majority (70%) of all killed and seriously injured (KSI) collisions occurred on non-built up roads (50 mph+). Lincolnshire’s main problem is on the rural A and B road network where 58% of all KSI’s occur on 18% of the network.
Sites for treatment are identified using the collision database using a variety of techniques. These include:
- Single sites – where there has been a cluster of accidents at a specific location
- Mass Action sites – where a number of sites are identified with the same problem e.g. wet skid problems
- Route Treatments – both whole routes and shorter links with high accident rates
Scheme Justification
In order to evaluate the value of a scheme, a balance has to be made between the cost of the work and the accident reduction benefits that it will provide. Lincolnshire County Council provides funding of £1m per year for the programme of schemes.
