01043551

Component

A traffic data warehouse with extensive amounts of loop detector traffic counts, and vehicle speeds was utilized to develop statistical models for evaluating the performance of the I-4 corridor in Orlando, Florida in terms of travel time reliability. Four different travel time stochastic models: Weibull, Exponential, Lognormal, and Normal were investigated. The developed best-fit stochastic model (Lognormal) can be used to estimate travel time reliability of freeway corridors and report this information to the public through traffic management centers. The new method was compared to the existing methods (Florida method and Buffer Time method). Unlike the existing methods, which were insensitive to the traveler’s perspective of travel time, the new method showed high sensitivity to the geographical location that reflects the level of congestion and bottlenecks. Also, it is more appropriate for measuring the performance of transportation facilities.

01042056

07-0289

English

22p

2007

Transportation Research Board 86th Annual Meeting

CD-ROM

Figures (6) ; References (20) ; Tables (1)

Distributions (Statistics); Freeway management systems; Freeway operations; Freeways; Highway traffic control; Reliability (Statistics); Stochastic processes; Travel time; Traveler information and communication systems

Lognormal distributions

Orlando (Florida)

Data and Information Technology; Highways; Operations and Traffic Management; Planning and Forecasting; I72: Traffic and Transport Planning

Transportation Research Board Annual Meeting 2007 Paper #07-0289

TRIS, TRB

Feb 8 2007 4:50PM