Transport Scotland Scottish Trunk Road Infrastructure Project Evaluation Evaluation Report for Trunk Road Projects Opened between April 07 and March 09


The following abbreviations have been used in this report:

AADT Annual Average Daily Traffic

ATC Automatic Traffic Counter

BCR Benefit to Cost Ratio

CL Climbing Lane

DAL Differential Acceleration Lane

DMRB Design Manual for Roads and Bridges

HGV Heavy Goods Vehicle

NPV Net Present Value

NRTF National Road Traffic Forecasts

RSA Road Safety Audit

S2 Single 2-Lane Carriageway

STAG Scottish Transport Appraisal Guidance

VPD Vehicles Per Day

WS2 Wide Single 2-Lane Carriageway

WS2+1 Wide Single 2+1 Carriageway