About Traffic Lab

Traffic Lab is a Seattle Times project that digs into the region’s thorny transportation issues, spotlights promising approaches to easing gridlock, and helps readers find the best ways to get around.

Technology

Walmart teams with GM to test autonomous deliveries

DETROIT (AP) — Walmart is teaming up with the General Motors' autonomous vehicle unit to test driverless delivery in Arizona. The companies say battery powered Chevrolet Volt vehicles will begin deliveries in Scottsdale early next year. At first they'll have human backup drivers who will monitor the cars and help to deliver packages to doors....