Technical Paper
Typical Speed and Acceleration Profiles for Right-Turn Maneuvers Based on SHRP2 Naturalistic Driving Data
2024-04-09
2024-01-2472
The goal of this study was to use naturalistic driving data to characterize the motion of vehicles making right-turns at signalized intersections. Right-turn maneuvers from 13 intersections were extracted from the Second Strategic Highway Research Program (SHRP2) database and categorized based on whether or not the vehicle came to a stop prior to making its turn. Out of the vehicles that did stop, those that were the first and second in line at the intersection were isolated. This resulted in a 186 stopped first-in-line turns, 91 stopped second-in-line turns, and 353 no stop turns. Independent variables regarding the maneuver, including driver’s sex and age, vehicle type, speed, and longitudinal and lateral acceleration were extracted. The on-board video was reviewed to categorize the road as dry/wet and if it was day/night. Aerial photographs of the intersections were obtained and the inner radius of the curve was measured using the curb as a reference.