Regulatory • Hours of Service rules/revisions • Cleaner burning engines (2007/2010) • Ultra-low sulfur diesel • Higher tolls/more tollroads • Homeland security measures Market forces • Global sourcing/offshoring • Driver wages and shortages • Fuel price volatility • Highway/port congestion Customer requirements • Smaller shipment sizes • Increased service reliability • Event-specific/timed delivery • Customer-specific packaging. |