Public Prosecutor v Johnson Tan Wee Kiat (Johnson Chen Weiji)

The respondent, Johnson Tan Wee Kiat, turned right at a cross junction against a red light and hit a motorcyclist who was going straight with the right of way. The rider suffered a mildly displaced fracture of a rib and minor abrasions. He did not need surgery and was given 21 days of outpatient sick leave.

The respondent pleaded guilty to driving without reasonable consideration under s 65(1)(b) of the Road Traffic Act 1961, causing grievous hurt. The District Judge, applying the framework in Chen Song v Public Prosecutor [2025] 3 SLR 509, placed the case in Band 1 (lesser harm, lower culpability) and imposed one week's imprisonment and a five-year driving ban. The Prosecution appealed in Magistrate's Appeal No 9159 of 2025, arguing that the jail term was manifestly inadequate and should be three to four months.

1. Whether the District Judge gave too little weight to potential harm to other road users.
2. Whether driving through a light that had been red for several seconds raised the respondent's culpability, and by how much.
3. Whether one week's imprisonment was manifestly inadequate.

The judge agreed that the case involved lesser harm. There was only one harm factor, the location of the rib injury, and the injury was not permanent and was treated conservatively. The Prosecution's argument on potential harm did not succeed: the Chen Song framework speaks of likely harm to other road users, and video showed that the vehicles behind the rider were nearly stationary, so a serious secondary collision was unlikely. Potential harm must rest on the real conditions at the time, not on hypothetical scenarios.

On culpability, the main factor was the failure to obey the traffic signal. The light had been red for about five seconds before the car reached the junction, which pointed to a longer lapse of attention. The judge chose not to count this as a separate second factor that would move the case to Band 2, because it was closely tied to the red-light breach and the framework is not to be applied mechanically. But the longer lapse did justify an uplift.

The District Judge had not stated a starting point, which appeared to be about 10 days. That was too low, while the Prosecution's figure of up to six months was out of line with precedents involving far worse injuries and hospital stays. A starting point of one month was set. A single compounded red-light offence from 2020 was balanced against the respondent's conduct after the crash, when he stopped, moved the rider to safety and insisted on calling an ambulance. A 30% guilty-plea discount gave three weeks.

Christopher Tan J allowed the Prosecution's appeal in an ex tempore judgment and increased the imprisonment term from one week to three weeks. The five-year disqualification, which was not appealed, was left unchanged.