Eroad said Coretex had a well-advanced pipeline of North America Enterprise customers.
The acquisition is expected to complete in early in the second half of 2022 and is subject to conditions, including Commerce Commission clearance, Overseas Investment Office approval and Eroad shareholder approval.
The trading halt will remain in place until the earlier of an announcement by Eroad about completion of the placement capital raise, or market open on Thursday.
Eroad chief executive Steven Newman said the acquisition was "truly transformational".
"Accelerating our key growth metrics by two years in North America and Australia and positioning us to become a bigger player in the global telematics market.
"Combining Eroad's expertise in broadly adopted regulatory telematics solutions with Coretex's extensive vertical telematics expertise and products creates an advanced market fit."
Shares in Eroad last traded at $6.15, having gained 92.8 per cent over the past 12 months.