4. For every journey performed for the purpose of attending a session of Parliament or a meeting of a Committee or for attending to any other business connected with his duties as Member from his usual place of residence to the place where the session or the meeting is held or other business is transacted and for the return journey from such place to his usual place of residence, a Member shall be entitled to receive travelling allowance at the following rates, namely:-(a) where a journey is performed by rail, air, steamer or launch, an amount equal to one and one-half of the fare for the highest class by the shortest route;(b) where a journey or any part thereof cannot be performed by rail, air, steamer or launch and is performed by road, a mileage allowance at the rate of ¹[ ten taka per kilometre] by the shortest route;(c) where a journey or any part thereof can be performed by rail, air, steamer or launch but is performed by road, a mileage allowance at the rate of ²[ ten taka per kilometre] not exceeding in the aggregate the travelling allowance which he would have been entitled to receive had he travelled by air, rail, steamer, or launch:Provided that a Member who performs a journey between the place of duty and a place which is not his usual place of residence may draw travelling allowance either for the actual journey or for a journey between the place of duty and his usual place of residence whichever is less.