Initialism of erotic roleplay.
"Their online chat quickly turned into an erp session where they acted out a fantasy scenario in real time."
In plain English: ERP is computer software that helps businesses manage all their important tasks, like money and inventory, from one central system.
"The company spent millions installing their new ERP system to streamline operations across all departments."
Initialism of Electronic Road Pricing. an electronic system of road pricing with gantries installed throughout several locations in Singapore, with the purpose of managing traffic problems especially during peak hours.
"The new ERP gantry on the expressway charged drivers to manage heavy morning rush hour traffic."