ABSTRACT
Transit-service reliability problems are very real and have had significant impact on transit efficiency and productivity. Transit reliability can be defined as dependability in terms of time (waiting and riding), passenger load, vehicle quality, safety, amenities and information. There is never a good uncertainty or a bad certainty in transit operations. The question arises as to whether remedies exist to service reliability problems and, if so, whether they are implementable and exhaustive. This chapter will attempt to answer this question through a disaggregate perspective of individual elements causing unreliable service.
