Cross-town Improvement Project Evaluation

5.0 Summary of Findings

Table 5.1 summarizes the key findings of this report by evaluation area.

Table 5.1 Summary of Key C-TIP Evaluation Findings

Evaluation Component	Key Findings
Real-Time Traffic Monitoring	Although alternate routes were not offered on all lanes, drivers generally followed them when they were, providing measurable time savings. RTTM route recommendations also reduced emissions on two lanes by nearly 54,000 grams of CO2 equivalents and almost 500 grams of other pollutants.
Dynamic Route Guidance	Of 95 total trips with DRG route guidance during the test period, 30 were redirected to avoid congestion, saving an average of six minutes of travel time, or 21 percent with deployment of DRG. DRG redirects reduced greenhouse gas emissions by about 109,000 grams and other diesel emissions by nearly 800 grams over the four-month test period.
Intermodal Move Exchange	If all stakeholders had followed the C-TIP work plans during the Kansas City test, it would have eliminated 135 bobtail trips and 1,080 empty truck miles, saving 180 gallons of diesel fuel. This would have achieved emissions reductions of over 2.5 million grams of greenhouse gases and almost 19,000 grams of other pollutants. In a theoretical Chicago deployment involving two railroads, IMEX could potentially reduce bobtails by up to 1,977 trips, saving nearly 50,000 empty miles and over 8,000 gallons of fuel. This would reduce greenhouse gases by about 98 million grams and other pollutants by approximately 740,000 grams.
User Interviews	Although they reported some minor issues with the C-TIP iPhone user interface, in general truck drivers like the idea of having a smart phone application that provides real-time traffic and routing information.
Drayage Optimization Tests	The IXT drayage optimization test in Kansas City revealed a 13 percent decline in bobtail trips over a two-month period after introduction of C-TIP OSAP-enabled smart phones. This reduction coincided with slight growth in revenue loads, indicating that C-TIP OSAP may have contributed to this efficiency gain. The automated T-Card dispatch system developed for Pride Logistics using C-TIP OSAP provided Pride dispatchers with real-time driver location intelligence, which enabled them to make better resource allocation decisions and reduce bobtail trips and bobtail miles by more than 50 percent.
Delphi	Intermodal industry experts polled for this evaluation collectively thought that a theoretical Chicago deployment of C-TIP could achieve per trip travel time savings of 5 to 10 percent on average, and bobtail reductions of at least 15 percent per day.

previous | next