Traffic speed increased by 25% during business hours and bus ridership by 6%.

FORBES: Drive-By Pricing

Since the Chicago Transit Authority implemented its Bus Tracker system, ridership gains have been only modest, warn authors Lei Tang and Piyushimita (Vonu) Thakuriah.

FORBES: Online Bus Tracker Attracts Modest Number Of New Riders

Some urban rail and bus services have reported increased ridership as gas prices have gone up.

NPR: A Future Full of Pumped-Up Gas Prices?

And the Chicago Transit Authority has increased ridership with real-time bus tracking and arrival times.

FORBES: Rahm's Latest Accountability Plan: An App That Tracks City Services