Objectives Traffic management is challenging during construction because of the effects of
traffic congestion, travel time, delay, and queue length. Long-term work zones on urban …

The concept of travel time reliability was developed to quantify the variability in travel times.
As travel time reliability measures are increasingly used in system planning and …

The latest edition of the Highway Capacity Manual (HCM-6) includes, for the first time, a
methodology for estimating and predicting the average travel time distribution (TTD) of urban …

This study investigates the lifetime costs associated with concrete barriers and steel
guardrails. We introduce a cost analysis methodology that incorporates critical factors such …

The Moving Ahead for Progress in the 21st Century Act (MAP-21) defined requirements for
system reliability performance measures. Under MAP-21, state departments of transportation …

The need for reliable performance measures of urban arterial corridors is increasing
because of the rise in traffic congestion and the high value of users' travel time …

The need for reliable performance measures of urban arterial roadways is increasing
because of the rise in traffic congestion and the high value of travel time. Consequently …

Roadway performance measures are used for operating, planning, and design purposes to
improve services for road users. Simple statistics of the performance metrics such as …

The 6th edition of the Highway Capacity Manual (HCM6) introduced a methodology for
estimating and forecasting arterial travel time (TT) distributions (TTD) and their associated …