Posts

Showing posts from September, 2025

A Shape of Things To Come

Image
The LAV - Lightweight Automated Vehicle The potential that autonomous vehicles (AVs) represent for disruptive and beneficial change calls for increased study and evaluation. Because of the speed at which relevant technologies are developing the time has come to look beyond short term impacts on safety, travel time reduction, accessibility and parking. History suggests that the present focus of debates over driverless vehicles-- liability, security, and popular acceptance -- are likely to be transitory. The significance of a mature autonomous transportation system will take longer to develop, but will have a profound impact on our social, economic, and built environments. This study examines the potential for driverless vehicles to address travel demand generated by activities not usually associated with single-occupancy vehicles. The focus is on the potential for small, lightweight, automated vehicles (LAV’s) to perform transportation duties that are presently accomplished ...

Capacity Case Study

Image
Huch wood would a woodchuck chuck?  -or-   What is the real potential of a driverless system? Lets start the devil we know. The present "system" is fairly well studied and, for all its diversity, exhibits fairly consistant behaviors across all its forms.  Different roads, weather conditions, and vehicles notwithstanding there is a common factor-- the driver. Drivers can be counted on to take a roadway of almost any design and reduce its capacity.   Give the driver a potholed, too narrow, and winding roadway and there will be more horns than progress. Create a broad, well lit multi-lane freeway and every commuter in the region will converge on it and create a parking lot.  The driver, not the road, creates a fairly firm bottom line. The average capacity for a lane of traffic at highway speeds is about 1,200 vehicles per hour. Above this number and slowdowns and stoppages become inevitable.  At lower speeds the...