METRO Magazine Logo
MenuMENU
SearchSEARCH

Optimal Electric Vehicles Debuts Battery-Electric Shuttle Bus

The all-electric S1LF will feature an ADA-compliant entry ramp for paratransit operations and a GVWR of 14,500 lbs., with no reduction in carrying capacity.

by METRO Staff
July 24, 2020
Optimal Electric Vehicles Debuts Battery-Electric Shuttle Bus

The S1LF integrates a quasi-purpose-built Ford E450 chassis platform, which has been fully optimized with the vehicle body and achieves a low step-in height without kneeling the suspension.

Credit:

Optimal Electric Vehicles LLC

1 min to read


Optimal Electric Vehicles LLC (Optimal-EV) is entering the electric vehicle manufacturing with the introduction of its battery-electric S1LF Low-Floor Shuttle Bus.

The S1LF integrates a quasi-purpose-built Ford E450 chassis platform, which has been fully optimized with the vehicle body and achieves a low step-in height without kneeling the suspension. The all-electric S1LF will feature an ADA-compliant entry ramp for paratransit operations and a gross vehicle weight rating (GVWR) of 14,500 lbs., with no reduction in carrying capacity.

Ad Loading...

The S1LF will feature a battery system, made in the U.S., featuring 113 kWh of liquid-cooled energy capacity, fueling an all-electric, zero-emission rear-axle drive system. The vehicle is designed to enable more than 125 miles of driving range and can fully charge in about two hours with optional DC fast charging. The S1LF is only available as a pure battery-electric bus.

Optimal Electric Vehicles LLC. is a derivative of Optimal Inc., an engineering firm serving automotive OEM’s as a preferred engineering service supplier for over 33 years. Optimal’s Engineering group has focused on EV and system design since 2015. The S1LF will debut at the APTA EXPO 2021, and the S1LF is the first of several planned commercial electric vehicles from Optimal-EV for use in a variety of applications.

More Zero Emissions

A SunLine clean air bus at a stop.
Zero Emissionsby Alex RomanMarch 10, 2026

U.S. Zero-Emission Bus Adoption Surpasses 8,000 Vehicles

CALSTART’s latest Zeroing in on ZEBs report shows continued nationwide growth despite supply-chain challenges. The group’s Deputy Director of Transit, Mike Hynes, talked to METRO about how agencies are adapting procurement strategies, fleet plans, and more.

Read More →
An LA Metro clean air articulated bus
Zero EmissionsMarch 9, 2026

California’s Push Against Federal Headwinds to Reach 100% Zero-Emission Transit Goals

Even amid shifts in federal funding, California continues to advance its zero-emission agenda, enforcing and funding its regulatory framework despite federal obstacles.

Read More →
A Mountain Line bus
Zero Emissionsby Alex RomanMarch 4, 2026

BetterFleet’s Dan Hilson on the Mountain Line Contract and Intelligent Charge Management

Mountain Line selected BetterFleet’s charge-management and fleet-operations platform to support its nearly all-electric bus fleet and future electrification plans.

Read More →
Ad Loading...
A white Chesco Connect paratransit bus parked outside.
Zero Emissionsby Elora HaynesFebruary 9, 2026

Why Chester County Chose Propane To Power Its Demand-Response Transit Fleet

See how the county’s Chesco Connect system is replacing its buses with propane autogas to cut costs, reduce emissions, and support high-demand paratransit operations.

Read More →
King County Metro electric buses made by GILLIG.
Busby StaffJanuary 30, 2026

Seattle's King County Metro Introduces New Battery-Electric Buses

Rolling out in electric yellow and seafoam blue, the first battery-electric buses purchased from GILLIG will begin serving riders in south King County on February 2.

Read More →
A black, white, and light purple graphic with an image of a BAE Systems hybrid electric bus and text reading "Re-Examining Hybrid Buses in Transit."
Zero Emissionsby Elora HaynesJanuary 19, 2026

Why Some Transit Agencies Are Re-Examining Hybrid Buses

As zero-emission goals advance, hybrid buses remain part of fleet strategies, offering reliability and operational flexibility.

Read More →
Ad Loading...
Zero Emissionsby StaffJanuary 14, 2026

California's VVTA Unveils Hydrogen Fuel Cell Buses, Fueling Station, and Brand Refresh

The introduction of hydrogen fuel cell buses represents a significant step forward in reducing emissions while maintaining reliable, high-quality transit service.

Read More →
Technologyby Staff and News ReportsDecember 24, 2025

Biz Briefs: Electric Paratransit Buses in San Francisco and More

Biz Briefs covers the latest supplier news in the motorcoach and public transit industries.

Read More →
A group of people pose in front of a battery electric transit bus.
Zero Emissionsby StaffDecember 24, 2025

Chicago’s Pace Advances Project Zero With North Division Electrification Milestone

Pace celebrates a major step toward zero-emissions transit with its first large-scale electric bus charging depot.

Read More →
Ad Loading...
Busby StaffDecember 15, 2025

California's RABA Begins Shift to B20 Biodiesel Across Bus Fleet

The transition marks a significant step in RABA’s continued commitment to sustainability, cleaner air, and responsible environmental stewardship in Shasta County.

Read More →