To make a pledge to (someone); to promise, guarantee (someone of something); to assure.
To make sure or certain of something (usually some future event or condition).
To commit oneself (to an obligation, activity etc.).
To pass a slower moving vehicle on the curbside rather than on the side closest to oncoming traffic.
To take upon oneself; to start, to embark on (a specific task etc.).
The passing of slower traffic on the curbside rather than on the side closest to oncoming traffic.