Traffic Safety - As enacted, clarifies the areas in which a personal delivery device may be operated and where such devices are prohibited; authorizes local resolutions or ordinances to both regulate and prohibit such devices but only in compliance with state law. - Amends TCA Title 55, Chapter 8.

HB 1684 allows personal delivery devices (like sidewalk robots or small delivery drones) to operate on bicycle paths, shoulders, parking lots, and areas adjacent to roadways in Tennessee, directly affecting delivery companies and local governments. The bill removes local governments' authority to ban these devices entirely - though they may still impose reasonable safety regulations - and sets a 20 mph speed limit for them. It also defines personal delivery devices as having pedestrian rights on sidewalks/crosswalks and cyclist rights elsewhere, aligning their operation with existing traffic rules for those areas. The law takes effect July 1, 2026.