Maryland Code, Labor and Employment § 5-605

(b)(1) Unless an employer owns or contracts for a vehicle that is used in a ridesharing arrangement, the employer is not liable for an injury to a rider or another that results from use of the vehicle.

(2) An employer is not liable for an injury to a rider or another only because the employer provides information or incentives or otherwise encourages an employee to participate in a ridesharing arrangement, as defined in § 11-150.1 of the Transportation Article.