- (a) The plan must contain procedures for obtaining and maintaining data on actual emissions reductions achieved as a result of implementing transportation control measures.
- (b) In the case of measures based on traffic flow changes or reductions in vehicle use, the data must include observed changes in vehicle miles traveled and average speeds.
- (c) The data must be maintained in such a way as to facilitate comparison of the planned and actual efficacy of the transportation control measures.
[61 FR 30163, June 14, 1996]