无票 (wú piào) means “without a ticket”

More examples

他在站台上无票上车，被制止。tā zài zhàn tái shàng wú piào shàng chē bèi zhì zhǐ

He boarded without a ticket on the platform and was stopped.

A required token is missing, whether it opens a gate or adds to a candidate's total.

没票méi piào: Having no ticket in a natural, conversational way.
没有票méi yǒu piào: Having no ticket, with the lack of a ticket stated plainly.

没有票据或票数，依上下文可指没有乘车票或没有得到选票。méi yǒu piào jù huò piào shù yī shàng xià wén kě zhǐ méi yǒu chéng chē piào huò méi yǒu dé dào xuǎn piào

无 (wú, "not have") + 票 (piào, "ticket or vote") forms a compact expression for the absence of the relevant pass or electoral support.

In everyday speech, 没有票 (méiyǒu piào, "do not have a ticket") is more conversational, while 无票 (wúpiào, "without a ticket") often fits notices, rules, and other compressed wording.