Is motorised rickshaw safe?

Dhaka is known as the "Rickshaw Capital of the World." Dhaka's streets are dominated by human-driven rickshaws. But now quite a number of motorised rickshaws are also seen in the main streets of the capital. These battery-powered rickshaws run through the streets with greater speed. If hit by any other vehicle or any obstruction, there is every possibility that these types of rickshaws may break apart because of their frail structure . It is not known whether these motorised rickshaws have been given license to operate in the streets of Dhaka.
The authorities concerned may adopt some policy for manufacturing and operating such motorised rickshaws.