Conventional quality control and quality assurance (QC/QA) specifications typically define the
as-built requirements for pavement rehabilitation and construction activities but have limited
direct linkage with the in-service performance of the treatments. The Ministry of Transportation
of Ontario (MTO) is moving to develop and implement a category of performance specifications
which provide a direct relation to in-service performance using actual field performance data.
MTO defines these performance specifications as specifications that describe how the finished
product should perform over time.
This paper describes the framework used to develop performance specifications for flexible
pavements in Ontario. Details on modelling the performance requirements, measuring
performance, and setting of acceptance criteria are presented. Recent work using the
Automated Road Analyzer (ARAN) equipped with advanced laser measurement systems
including crack measurement capabilities is discussed. Implementation of these specifications
in innovative warranty-based alternate delivery contracts is presented.
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